Car Only Leaks Coolant When Turned Off

Leaking Coolant On 3400 I came home from work and my car was working fine when i turned it off i forgot to switch it to park and after i turned The only thing. There seems to be a leak in my coolant, but only when the car is turned on, any suggestions on what the problem could be? Learn more about Chevrolet Impala at the Edmunds. It would only puke coolant when the ambient temp was below about 50 degrees and the car sat overnight. always on when car is on. Symptoms of a Bad or Failing Radiator Leaking coolant onto the floor. If you can pop your hood from inside of your car do so – but if you have to open it by hand from the outside be sure to wait until it has cooled off, about 30 minutes. Upon her return to the car, within a maximum of 10 minutes, she finds that the engine has turned itself off. i filled the coolant went to drive to the dealership and the light went off. I always thought I just had to get air out of the system and it worked for a while but now the leak is back and worse than ever. Many people recognize this sound every time they start the car but don’t realize it is the fuel pump running. Switching it off when you first start the car is not terribly difficult. The Main Causes of Car Smells Like Antifreeze but Not Overheating. this is typically not a problem when the car is running, because the coolant system runs under pressure most of the time, but when turned off, all the engine heat soaks into the coolant, and since its already at or over pressure, that heat pressurizes the. The consequences of diluting either substance should be clear — but in case it’s not, the answer is that you can expect overheating and/or severe damage to your engine if you try to drive around with coolant leaking into oil or oil in the coolant reservoir. Checked coolant level for any loss? If it's pouring out as you state, you'll notice low or no coolant in the reservoir 2. If this tank is damaged - through vibration or simple old age, for example - it can crack and start to leak coolant. I had it pressure tested and the results said there was no leak, but later that night as soon as I put it in drive the "engine coolant low" message popped up on and told me to turn off the engine and refill with coolant. It never smells inside the car, only from the outside. The car leaked out about a liter of coolant from the drain tube coming from the heater core. I quickly released the pressure by loosening the valves. Is your vehicle leaking antifreeze? Do you need a radiator leak repair or is it a hose? A radiator repair, rather than completely replacing the radiator, can save you a lot of money. The heating system shuts down after being turned on and while in use for anywhere from 10 minutes to an hour. Route 66 is covering the repair for turbo coolant hose leak. WAS using the engine coolant heater, proceed to Step 3. Start the engine for ~30 seconds then kill the engine. I add coolant every 3 weeks or so when the dash light comes on. Common Causes. What happens if a coolant is leaking from the bottom of the engine? It means you have a problem and luckily, you have had warning, unlike a tire blowing out. How to top up your car’s coolant reservoir? Topping up your car’s coolant reservoir is a straightforward process. Note on some other models they may have flashing lights or a buzzer. if so then he has a leak in his coolant system. My 00 GTI vr6 has 96k miles, and when the weather turned cold (below 40 F) I started to notice a slow coolant leak, have to top it up every two weeks or so (I go through about a tank of gas a week, and use the car almost every day for mostly short trips, to get a sense of how much it gets used). You should see air bubbles rise to the surface of the filler hole. Cars are not supposed to leak antifreeze, also known as engine coolant. This may lead to some serious problems and damage to your car, so fixing it as soon as noted might save you from some unnecessary expenses. I top off the coolant resevoir with some dexcool and then can't duplicate the leak to locate it. Leak comes from two small hoses that connect a big hose above the engine. If a gasket or a gasket seal has failed, then this could lead to oil leaking. Also, the coolant will not circulate (meaning no heat source for the heater) until the engine is up to a certain temperature. I dont think it leaks during driving but only when I turn off the car. Question: Why is My Car Leaking Water? We were about to leave on a little road trip, and I had the car running in the driveway with the A/C on while we packed. 0L 4 cylinder engine faces this same coolant leak problem if the cap fail. When the engine is turned off, the coolant doesn't circulate, and the heat stays trapped therefore prolonging the engine from cooling. If you suspect an internal coolant leak, allow the radiator to cool, take off the cap, and look for signs of oil or frothy bubbles in the radiator or header tank. • Cabin heat comes from hot coolant, so drive long enough to warm up the engine. Stretch a length of PTFE tape into a string, then wrap it around the spindle four or five times. What would make my 2004 chrysler Sebring limited (2. Still baffled as to where this damn coolant leak is coming from. com as How to Troubleshoot Car Overheating Causes. Leaving the A/C on before you turn the car off can cause mildew build up, are you also using recirculate? Not sure on the A/C on or off but if you have it recirc on floor only a/c is on w/o a light on. If it does not, turn off the engine and reinspect your work. The coolant tank is on the passenger side under the hood. What happens if a coolant is leaking from the bottom of the engine? It means you have a problem and luckily, you have had warning, unlike a tire blowing out. Wait for the engine to cool down before checking coolant. Receive helpful tips and a free copy of my popular auto-repair ebook, A Mechanic Comes Clean. Replace Thermostat Volvo 850, S70, V70, C70 or XC70 sign of a coolant leak though. I think it might be the known o-ring leak, but wanted opinions before ordering parts. You might want to step out of the car when doing this. I add coolant every 3 weeks or so when the dash light comes on. Check for loose or missing grounds at static k. Ok back at this again. Yesterday I started car and got a block from the house and the red check coolant light came on again. Lift up the harness cover that runs across the engine cover. oily stuff under the car. One should know that dealing with even a small issue in a timely manner is necessary as it is rightly said, "A stitch in time saves nine". The 2000 Ford Taurus has 4 problems reported for leaking coolant. So I know it aint the problem. Receive helpful tips and a free copy of my popular auto-repair ebook, A Mechanic Comes Clean. Leaks not only let coolant out, but they let air in. This has happened maybe 5 times now where I find the puddle, but the leaking has stopped. Failing that, water will also temporarily do the trick. The mechanic said there was also a coolant tank leak, but the tank holds fluid fine, so I'm not sure this is the issue. thank you - Answered by a verified Auto Mechanic We use cookies to give you the best possible experience on our website. I've brought this up before. If you ignore a leaking coolant long enough, you will run out of coolant, which leads to overheated engines and other serious, but highly avoidable, problems. Radiator Leak. michael mathis I have a 92 mustang with the 302 I have a/c and when I turn it on my car overheats. • Cabin heat comes from hot coolant, so drive long enough to warm up the engine. Q: I’ve noticed some spots on the driveway beneath my car that I believe are antifreeze (orange). Some cooling systems have a pressurized coolant overflow reservoir. This can be difficult to diagnose properly, but some warning signs include - rough engine idle, milky deposit under oil filler cap, higher than normal engine oil level, brown or dirty looking coolant in the coolant bottle. Being low on coolant may also cause the idling problem. If the noise you hear is a fast tap or clatter near the top of the engine, it could be valve noise which would require you to have some - 1999-2005 Pontiac Grand Am. It will heat up a little quicker if you leave the fan off for the first few minutes the car is on so you don't cool the water down before it gets hot. I noticed that there was coolant leaking when the car was turned off,it was virtually pouring out so I popped the bonnet but could not see where it had come from,I checked the overflow that was still full,checked the radiator and that was ok aswell,there is no signs of where it leaked from,does anyone know where it would have come from?Its definately not the overflow hose either. You can usually spot an antifreeze leak while it drips, sprays, or spurts from the leaking part. it sounds like a water pump leaking, one quick test is to dip a finger into the water that has leaked from the car and taste it, if it tastes sweet it will be the engine coolant leaking (antifreeze is very sweet tasting) and if you cant see a leak under the bonnet it is likely to be the water pump. Based off of what I've searched it seems some of the possible issues include air in the radiator, bad radiator and/or thermostat, blown head gasket, radiator is out of coolant, or a bad fan, (however I did see that both radiator fans did run while I turned the car on but left the engine off). It make sense. Replacement is very difficult!. When I would turn the car off after a bit of a drive, the temp gauge in the car was at medium. Not mixed with oil as far as I can tell straight coolant. So i wanted to start another thread about this. A leak or a faulty bearing. My problem is only at 70 mph and up with the AC system on the engine overheats into the red. Yesterday is when I noticed it after the temp gauge spiked. Now my car is overheating quickly, smoking from under the hood, and it always says low coolant. while running and idle in my garage i cannot replicate the leak. Seems to work fine, but my only issue is that my engine light did not turn off. Running cooling fans help cool down the engine even after you turn off car. But what happens to a car when there's no coolant in the system? In this guide, we'll look at: What happens to an engine with no coolant; How modern engines deal with low coolant and overheating. I can run it on the level indefinitely, in 90-degree heat, at 60 mph, with the a. also, when in trouble and see the temp gauge hitting hot, turn off ac turn on heat and hit the fan to blow as much of that heat out of the engine into the car, open the windows. There are several reasons why heater cores malfunction, but the common cause of leaks is continued temperature cycling from hot to cold. When I drive the car about 30+ miles it gets to a point where it the gauge will slowly start to go up in the dashboard Once I press on the accelerator it goes back down to normal position. It's unwise to drive your car after it overheats. The car is probably heated using the engine coolant through a forced air to coolant heat exchanger. Just wondering if you guys can help me I'm not an expert on mechanics but I paid lof of money to get the A/C fix and it is working but now leaking water and coolant is not good at all. I dont think it leaks during driving but only when I turn off the car. If you can pop your hood from inside of your car do so – but if you have to open it by hand from the outside be sure to wait until it has cooled off, about 30 minutes. More commonly, a blown headgasket leads to a coolant leak. Coolant is considered to be an intermediate that transfers the heat from the engine body to the cooling tank. This cap is inherited from the N42 block first introduced in the E46, meaning the E46 318i with the N42B20 2. I have needed to add a quart or more of coolant every week for the past month. A 50/50 mixture of antifreeze and distilled water flows around the engine during use, keeping it from overheating, so a leak can mean trouble. If a gasket or a gasket seal has failed, then this could lead to oil leaking. It was running fine, but when I did a last minute look before taking off, I noticed a puddle of water underneath. If you only notice the smell outside the car, the leak is in the coolant compartment. coolant reservoir emptying through overflow outlet Hello, VERY strange problem, B4 Passat with 1Z, 525,000KM. Car overheating, no leak, antifreeze being lost, changed water pump (x3) and thermostat (x2), tensioner, got car back, after about 2-3 weeks is currently doing the same thing. i also have asked him to smell the water/puddle next time to see if there is any antifreeze. To fix an antifreeze leak, you'll need the following items:. Not mixed with oil as far as I can tell straight coolant. A collapsing radiator hose will prevent coolant from moving through your cooling system and will quickly cause engine overheating. Reasons for a low coolant light comes on and off Conclusion. It was a rainy cold day so I turned on all the vents, turned the dial heat 100% and the vent speed 100% only for the vehicle to drain my coolant and the vehicle heated up. Turn on the heater full blast when engine is at normal temp, that can help remove an air pocket in the cooling system, then top off radiator with coolant once cooled. Can not find coolant leakany ideas? My wife has a 2003 Jeep Liberty with a 3. Then we'll turn off the engine and let the car sit overnight with the cooling system still pressurized at about 15 psi. It was bubbling and leaking out. It turned out the head gasket was leaking allowing exhaust pressure into the coooling system You can test this by running the car with the radiator cap off. i also have asked him to smell the water/puddle next time to see if there is any antifreeze. Symptoms of a Bad or Failing Radiator Leaking coolant onto the floor. The one good thing about an antifreeze leak is that it makes itself apparent very quickly. Leaks allow the coolant and motor oil to mix together. I have a little bit of heat, and sometimes full heat but that does not last long because the leak is so fast and once it goes down a little bit the nice heat stops. Larger auto. turn it off and let it cool down. Coolant has a sweet smell like candy, if your car is leaking coolant or antifreeze, you will notice the sweet smell coming from your engine compartment or inside your vehicle if you heater core has failed. This pressure can find its way out of any small opening in the Jeep Cherokee. DO NOT DRIVE your car if you have a radiator leak or a hose leak or any coolant leak. There's a leak in the cooling system may have a leak. Left unchecked, a coolant leak can lead to your engine overheating and your car dying on the side of the road. coolant leak when car turn off - car start to leak coolant when shutoff × We use cookies to help our site to work, to help us understand how it is used, and to tailor advertising on this and other sites. Fix Antifreeze Leaks: 2014-2017 Nissan Rogue. And if there is an external leak, we'll see it on the floor the next morning. And only during the enitial warmup. This is just a small ‘radiator’ matrix inside the airblend box, connected to the engine coolant circuit via a vacuum-operated water valve. I can run it on the level indefinitely, in 90-degree heat, at 60 mph, with the a. Rust is also damaging to critical water jackets in the engine block. Replace the entire cooling system, almost EVERY E39 will suffer from this if something else doesn't kill it. If a gasket or a gasket seal has failed, then this could lead to oil leaking. [Note: Coolant is deadly if swallowed. i filled the coolant went to drive to the dealership and the light went off. I assume you have done your due diligence in confirming it is in fact coolant that is leaking 1. You are eligible for a full refund if no ShippingPass-eligible orders have been placed. With the engine running, smell the coolant itself - if there is a whiff of exhaust gas , the cylinder-head gasket may be leaking. If the smell is coming from inside the car only when the heater is turned on, the problem is either with the heater core or the heater hose. It was getting to the point where I had to add coolant basically every week. ? My antifreeze seems to be leaking out when I have the car turned off. The car doesn't overheat even when it's really hot and at a stop. I noticed a plastic mechanism that probably controls the flow of the coolant to the heat exchanger in towards the cabin is showing a drip leak. This is a great feature for a turbocharged car; however, Audi installed a pretty high temp thermo-switch to activate the system. There have been a number of rumours pertaining to Left 4 Dead 3’s development, with many credible sources teasing its existence. I spent about 30 minutes tearing the plastic cladding off the bottom of the car (there's a billion clips and screws holding those on) hoping to find some trace of a leak or blowout. From AC to Max AC only changes the recirc door to recycle the cabin air rather than draw in fresh air. Honda Accord: Why Does My Fan Keep Running After the Car is Turned Off? In some cases, the cooling fan under your hood stays on for a prolonged period of time, causing your battery to die. blasting, without overheating or losing any water from the radiator. As a side note, do not add green coolant if you have red in there now. Rust is also damaging to critical water jackets in the engine block. I have a 98 Cavalier Z24 with the 2. This blows some excess heat from the engine into the car. No excessive pressure when running or once I turn off. I don***8217;t want to jump to conclusions but it seems that if I turn the heater on, it causes pressure to build up and coolant leaks from around that hose on the expansion tank. I pointed out that the hose that was leaking was only part rubber, and the rest was metal, and they agreed. Read more Ford reviews to learn about other models. Sue, I'm not sure about your engine size, but the 3. External leaks are very easy to find. In the case of a small leak at a radiator hose, it might be possible to tighten the clamp and stop the leak. 41 results for coolant pressure tester Save coolant pressure tester to get e-mail alerts and updates on your eBay Feed. Coolant leaks and engine overheating are usually caused by a failing water pump. Leaks allow the coolant and motor oil to mix together. Note that this is only a temporary solution and more leaks can be visible in the future. Look very closely, it's hard to see. My 05 ls v8 is leaking coolant ( same spot drivers side tire) from the over flow (not tank new tank) , i f i idle or put a/c on the car the coolant starts to boil & spill out the over flow an cause alot of steam, i put heater on and coolant goes back down. Antifreeze odor from leaking heater cores is transferred with the heated air inside the car when the heater blowers are turned on. If the coolant is low, use a coolant pressure test kit to pressurize the cooling system that will help reveal any leaks. To a dead cold engine, 90degees outside though. “There is a chalk outline slowly being drawn around common sense and most people can’t identify the victim. longhornsqx4 wrote:Ive tried to run the car with the cap off before, doesnt work, big mess. It was Valentines Day. With the engine running, smell the coolant itself - if there is a whiff of exhaust gas , the cylinder-head gasket may be leaking. Drove it for about a week, nothing. blinking coolant light when cold So now that its getting cold in the mornings, upon start up, my red coolant idiot light starts flashing every morning only on the first start upIf I turn off the engine and re-start, it goes away. Fixing a coolant leak as soon as possible is crucial. While it's not ideal on a hot summer day (which is when most vehicles tend to overheat), it does help cool the engine down. Check the condition of the shroud for cracks & its proper installation. When they stop popping up, you can turn off the car and top off the radiator with coolant if needed. It may take a little longer to turn off on cold winter days. They are very hard to see without a pressure tester and getting under the truck with a good light. If the hissing is only heard after YOU shut off the car, it is likely a small leak in a vacuum hose.  To avoid getting burned let the engine cool down at least thirty minutes. ) The area it came from was under/near the battery in the left front of the car. Drove it for about a week, nothing. Would treat this problem as fairly urgent - but just search out the leak without too much consideration to the fact that it only leaks after switching off. The radio kept turning itself on. I think it might be the known o-ring leak, but wanted opinions before ordering parts. This is fine for general street use. The consequences of diluting either substance should be clear — but in case it’s not, the answer is that you can expect overheating and/or severe damage to your engine if you try to drive around with coolant leaking into oil or oil in the coolant reservoir. HELP! My car has 118898 miles. If You Do Have a Coolant Leak If you determine you have a coolant leak be careful when opening your radiator cap. My problem is only at 70 mph and up with the AC system on the engine overheats into the red. These are problems reported by owners of 1997 through 1999 Grand Prixs, organized by general area where the problem occurs. I am going to have to take it in on Monday, but that is not what I wanted to address. I think it might be the known o-ring leak, but wanted opinions before ordering parts. Valve cover gasket, timing chain cover gasket, camshaft seals) If your vehicle has a history of irregular oil changes, extreme climates, or low RPM driving, condensation and moisture can form in the engine and cause sludge to build up, creating the possibility of a leak. If the coolant is low, use a coolant pressure test kit to pressurize the cooling system that will help reveal any leaks. I had the radiator replaced and drove it home about 90 miles. I assume you have done your due diligence in confirming it is in fact coolant that is leaking 1. Save on Coolant & Antifreeze with great deals at Advance Auto Parts. Your car's water pump is an important part of your vehicle. To fix an antifreeze leak, you'll need the following items:. 5 liter engine, coolant leaks are most likely to occur where the hoses connect to the engine. I'm going through about 1/2 a jug a day and only leaks when the car is running not when the car is shut off. com : Car complaints, car problems and defect information. Common Volkswagen (VW) Problems. Coolant leaks are generally noticeable with or without the AC on as the AC should not have any impact on the coolant system. If a gasket or a gasket seal has failed, then this could lead to oil leaking. Why does Dodge Dakota pickup leak coolant when engine is turned off? We use cookies to give you the best possible experience on our website. Alright I have a coolant leak on the front drivers side of the car. Check all your hoses and make sure none are collapsed or sucked shut. I could never make the car leak coolant from the core again, however, every time I run my heater on high and then turn off my car, about 4-8 oz. it sounds like a water pump leaking, one quick test is to dip a finger into the water that has leaked from the car and taste it, if it tastes sweet it will be the engine coolant leaking (antifreeze is very sweet tasting) and if you cant see a leak under the bonnet it is likely to be the water pump. There have been a number of rumours pertaining to Left 4 Dead 3’s development, with many credible sources teasing its existence. The coolant system pressurizes and if you remove the cap right after the engine has been running it will still be hot. Poking my head around the engine bay when it is hot it seems most prevalent behind the driver side headlight. Make sure that there is no coolant leaks. Gasket Oil Leaks. Caution DO NOT open the radiator cap on any hot cooling system. Question: Why is My Car Leaking Water? We were about to leave on a little road trip, and I had the car running in the driveway with the A/C on while we packed. Comments: Please help memy brother mistakenly drove my BMW e90 with the expansion take open and obviously after some time the car displayed the orange low coolant light then immediately turned red and the car switched off. Can not find coolant leakany ideas? My wife has a 2003 Jeep Liberty with a 3. from what i've heard these intake manifold gaskets have a very small leak at first that just evaporate or burn offthen they turn into a more serious. After inspection, it appears that the fluid came from the fluid resevoir overflow tube?not from a leaking hose, water pump etc. My radiator is leaking water – help! A huge range of issues can cause a leaking radiator. Note on some other models they may have flashing lights or a buzzer. My Coolant Looks like Mud & My Car Won't Start There are certain things an engine can do that just reek of "very bad," and unnatural changes in fluid color or texture rate pretty high on that list. I was only a mile from my house. Some coolant hoses (the heater hoses) go into the passenger compartment itself. In this video show how to find coolant leaks with a pressure pump. Yes, if i have the AC turned off it still runs hot and the fans switch on when its hot and then turn off after. Driving the car on the road it overheated and turned off, leaving me stranded in the middle of the road! took it to Honda dealership tech, to find out that the engine block cracks causing the engine to leak the coolant and overheating. Flush the coolant every 30,000 miles or every 2 years, whichever comes first, if using G11; if you have switched to a G12 variant or G13, the flush interval is increased to 4 years. the coolant thus getts hotter the. With the engine running, smell the coolant itself - if there is a whiff of exhaust gas , the cylinder-head gasket may be leaking. Inspect the cooling system for leaks. Your leak is a comprression leak involving passing combustion pressure past the cylinder fire ring and will cause big problems. No one has been able to turn off that speaker. Your vehicle's radiator may leak suddenly, rendering the vehicle stranded on the side of the road. My cars antifreeze leaks a lot when i shut it off,but not when i'm driving it or ideling. Now, this probably will not show up in oil analysis, it may but so far in my case it has not and I believe I have a similar problem. Running the A/C puts a heavy load on your engine. I do not need to add coolant over the summer. I add coolant every 3 weeks or so when the dash light comes on. I smell burning oil through the ventilation system, but there is absolutely no sign of an oil leak under the. Check your owner's manual to see if your car uses "long-life" coolant. Comments: Please help memy brother mistakenly drove my BMW e90 with the expansion take open and obviously after some time the car displayed the orange low coolant light then immediately turned red and the car switched off. By Brad Bergholdt, Tribune News Service. Before we get to how to fix a coolant leak, let's talk about why it is important to fix your leak quickly. The steaming we're interested in here is steam that you can see coming from the cooling system. Symptoms of a Bad or Failing Radiator Leaking coolant onto the floor. After removing the air box, the windshield washer bottle and finally the coolant overflow bottle only to find no leaks, holes or cracks. Car engines create a great deal of energy by burning petrol or diesel. Coniam says you should expect to pay a little more than $100 for an A/C recharge and leak diagnostic, but to be wary of extremely low prices for the service. Car fluid or coolant circuit element just changed: Your overheating is probably due to air trapped into the coolant circuit. If it was low (it's supposed to be a closed system right) you either have a leak or your motor overheated and you burned part of the coolant off. People make a few common mistakes when leak testing AC systems with these leak sniffers. The auto part stores carry these to cater to DIY’ers in hopes that they, in turn, buy the auto parts at their store to make the fix on their own. When I take cap off with engine running I can see water flowing around system (from the pipe from engine block into top of expansion tank). The car runs at normal operating temp but can smell burning coolant and about two times after driving there is steam in the engine bay. #2 – Coolant Leak If you continue to see white smoke coming out of the pipe after the engine has had a chance to warm up or while accelerating, then your coolant might be leaking internally. I guess it's probably. All seems good, coolant cycling, fan turns on and off, etc. I had the radiator replaced and drove it home about 90 miles. The engine temperature never reaches over 200 (I don't drive too far), but I can smell the coolant after I've shut the engine off. I checked and there was a puddle of antifreeze on the ground of the garage. Leaking Coolant when car shuts off So I've noticed that my car leaks coolant out of the overflow when I shut it off. That would allow antifreeze to leak into the cylinder from the cooling jacket. For the first 100,000 miles, it is necessary to check the coolant level simply to be sure you're not leaking or burning coolant. Your leak is a comprression leak involving passing combustion pressure past the cylinder fire ring and will cause big problems. One of the recognizable symptoms of bad intake manifold gasket is coolant leaks. It only seems to be under load of driving, not at idle, also AC must be off. Your vehicle's radiator may leak suddenly, rendering the vehicle stranded on the side of the road. Now, this probably will not show up in oil analysis, it may but so far in my case it has not and I believe I have a similar problem. Antifreeze gets very hot and will start to steam, especially if it's spraying onto a hot engine or running down a hot radiator. By a large margin, the most common cause for engine overheating is simply a low coolant level. It might get worse when you shut the car off, since when the coolant isnt circulating it sits in the hot block and expands a lot which is probably forcing it out of wherever its leaking from at a faster pace. The video above shows you where the coolant reservoir, hoses and connections on your 2002 Camry LE are located and the steps needed to fix minor coolant leaks. Coolant drips on to the engine and turns into superheated mist. always on when car is on. The coolant system pressurizes and if you remove the cap right after the engine has been running it will still be hot. I think it might be the known o-ring leak, but wanted opinions before ordering parts. The coolant only leaks out when the motor heats up. Generally, when this seals were damaged, then the coolant will flow out over the seal. I recently drove cross country and along the way developed a major leak. All it takes is a little bit of coolant to leak out and get mixed in with the engine oil. This can be difficult to diagnose properly, but some warning signs include - rough engine idle, milky deposit under oil filler cap, higher than normal engine oil level, brown or dirty looking coolant in the coolant bottle. Sometimes, an ultraviolet dye may be added to help the technician find small leaks. Antifreeze in the cooling system The radiator contains piping through which the coolant circulates, losing heat. I'd wak into the garage and there would be a 4 or 5 inch puddle. Do not open the bleed valve and wait about an hour so the leak will slow down once the water pressure is out and the air is trying to pull itself into the radiator at the same time as it leaking cause a neutral effect and the water leak. Replace Thermostat Volvo 850, S70, V70, C70 or XC70 sign of a coolant leak though. The thermostat is typically a spring-loaded valve. The car does not overheat or leak coolant with the heater off. Because of improvements in coolant technology and engine efficiency, the fan is now electric and runs intermittently, kicking in only when you need it. turn it off and let it cool down. Turn on the heater full blast when engine is at normal temp, that can help remove an air pocket in the cooling system, then top off radiator with coolant once cooled. But just before it shuts down, the hot air gets really hot, then I hear a door or gate in the heater shut off and only cold air comes from the heater. Leaks not only let coolant out, but they let air in. Car Overheating but the Coolant is Full? Low coolant is only one reason why engines will overheat. Lift up the harness cover that runs across the engine cover. My last vehicle kicked the bucket in October because of anti-freeze intrusion into the oil supply. I have no overheating issues. 95 corvette coupe, sun visor lights stay on as long as car is on, Not rated yet 95 Corvette cupe, switch on visor doesnt turn light off. If water is still leaking from under the plastic cap you will need to turn off the lockshield valve at the other end of the radiator. When restarting the engine, coolant temperature exceeds ambient temperature and the PCM will not attempt cold start tests. Inverter Coolant leak, followed by ABS and brake lights up The radiator from the car does not cool the inverter, it's only for the engine. Leaks not only let coolant out, but they let air in. by clicking either "turn off for. #2 – Coolant Leak If you continue to see white smoke coming out of the pipe after the engine has had a chance to warm up or while accelerating, then your coolant might be leaking internally. I drove it 300 miles like this and it ran just a tiny bit hot all the way there (maybe 10 degrees). I can run it on the level indefinitely, in 90-degree heat, at 60 mph, with the a. Prior to the Blue Devil repair, air/combustion gas would be trapped in the heater core meaning no heat inside the car unless RPM's were very high. If the coolant level has dropped again, but there are still no leaks, then the coolant may be leaking into the engine. These are problems reported by owners of 1997 through 1999 Grand Prixs, organized by general area where the problem occurs. I spent about 30 minutes tearing the plastic cladding off the bottom of the car (there's a billion clips and screws holding those on) hoping to find some trace of a leak or blowout. 2 days ago · Auto Q&A: Don’t put off fixing cooling system leak. - when A/C off, radiator fan does not turn on automatically - when A/C is turned on, both fans turn on and off at the same time automatically - engine temperature gauge shows close to overheating (assumed to be correct as temperature gauge appears working when car is warming up). The smoke was from antifreeze leaking on to the pipes coming off the motor. I top off the coolant resevoir with some dexcool and then can't duplicate the leak to locate it. Should we turn off the ignition before the failed test is complete, it will abort. 4 that is driving me crazy with a coolant leak and am hoping that someone can give a little direction on this.