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What is wrong when a 1992 Honda Accord is losing coolant but has no leaks or overheating or fumes in exhaust and the thermostat and radiator fan work?
Wiki User
∙ 19y ago
If it had no leaks it would not be loosing coolant. So therefore it does have a leak. It can be leaking in a spot where the coolant burns away before dripping on the ground. Also a blown head gasket is a possibility. Look for coolant in the oil. A heater core can leak. Do you smell coolant inside the car or are the windows fogging up or developing a film. You need to have a pressure test run on the cooling system and find this leak.
Wiki User
∙ 19y ago
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Your car is overheating the water pump went and the thermostat colomn had a whole in it it is still really badly overheating could it be the head gaskets?
On many engines you have to bleed the air from a bleed screw or trapped air will stop coolant from circulating. Thermostat installed backwards? Radiator plugged up? Hopefully it's not head gaskets. If it's blowing white smoke and the exhaust smells sweet, then it is head gasket.
Your 2001 jetta keeps overheating- you just replaced the thermostat and it is still overheating there are no leaks or anything though- what could be wrong?
coolant fan not working change the temperature sender located on the engine ( follow the wires from the fan ) failing that the cylinder head could be warped check for water in the engine oil ( oil looks like mayonaise)or check if theirs any trace of steam from the exhaust when hot Try replacing the water pump too.
Why is my 1998 Jeep Cherokee overheating?
First you have to understand the components of the cooling system.1) Coolant in the engine water jacketa) must be full, fresh and correctly mixed2) Coolant in the radiatora) must be full, fresh and correctly mixed3) Thermostatic valvea) must correctly open at the appropriate temperature4) Mechanical clutch driven fana) must actuate fan at the appropriate temperature (190)5) Electric cooling fana) must engage at operating temperature (210)6) Water pumpa) must properly circulate water7) Radiatora) must be free of clogs and leaksb) must maintain pressure to prevent coolants from evaporating rapidly (boiling)Next you must understand the operation of this system.1) On cold start, the Thermostatic valve (3) is shut, forcing (1) coolant in water jacket to recirculate.2) Once engine temp reaches the point where the thermostatic valve (3) actuates (~190 f.), the coolant in the radiator (3) is circulated into the engine water jacket (1)3) About the same temperature, the thermostatic clutch on the mechanical fan actuates, blowing forced air onto the radiator (7)4) If the car reaches 210 degrees or more, the secondary electrical fan should engage which will increase the forced air circulation to the radiator.Overheating typically follows one of a few different patterns, and their most common causes1) Overheats while sitting at idle or stuck in traffic, does not overheat while driving on highway.a) improper thermostatic valve operationb) low coolant or bad coolant mixturec ) improper water pump operation2) Overheats while under load.a) improper cooling fan operation,b) improper thermostatic valve operationc ) improper water pump operation3) Overheats quickly, under any circumstances.a) head gaskets (also look for telltales exhaust in radiator fluid - there is a test for this)b) lack of proper coolant in engine water jacketTertiary issues of no heat in cabin :a) low coolantb) bad thermostatic valvec) blocked heater core in cabinBe aware that curing one problem may not be the only problem that your cooling system has, so approach the problem with an open mind and a willingness to make clear observations and consider all factors.The simplest diagnostic procedures, from easiest to less easier are :1) Check coolant level and mixture.a) never remove the cap of a hot cooling system, ever. For any reason. The pressure can be explosively high, and the coolant can spontaneously evaporate causing a steam/boiling coolant fountain when given a chance to evaporate.b) a cool coolant system should have coolant visible in the filler of the radiator and you should not be able to add more water without it spilling out.c) coolant should be of a proper mixture for many reasons including corrosion prevention and thermal conductivity. There are testers available which will test the coolant condition. Coolant should be a mild fluorescent green-yellow color. It should not be brown, muddy or grey.d) if you must add water/coolant, and mix it yourself it's recommended to use distilled water. Minerals that go into your engine remain there.2) Check for air bubbles in cooling system and basic circulationa) jack up front of car (taking all safety precautions as applicable)b) loosen radiator cap to half-lockc) knead upper radiator hose, pumping it to draw fluid in and push air out of overflow valved) start engine and allow to run to warm (with car jacked up, and radiator cap in half-locke) test upper hose, it should be hot and full of fluid once car warms upf) observe radiator fluid, it should appear to be circulatingafter verifying all of the above if condition not found and overheating persists3) Test thermostatic valve operationa) start engine and run to warmb) turn on heater, hot air should come out. if it does - your thermostat is likely good3b) Observe thermostatic valve operationa) remove thermostatic valve from engineb) place in boiling waterc) observe that thermostatic valve opens rapidly and smoothly and closes quickly once cooledd) if this works, your thermostatic valve works properly4) Check for exhaust leak into water jacketa) test water jacket coolant (you must specifically obtain water jacket coolant) for exhaust residueb) If you find exhaust residue in coolant, you most likely have either a cracked head, or blown head gasket
Where is the engine block coolant plug on a Jeep Cherokee?
IF it's a small block- V-8 there are 2 plugs, one on each side of the motor beneath the Exaust manifolds-ABOUT in the middle of the motor & usally take a 9/16 inch socket 2 remove them-I install NEW petcocks instead of the plugs so as not to need sockets the next time-IF U are going 2 drain on a regular basis.
Can a bad head gasket cause white smoke to come out of the exhaust?
Heavy white smoke is usually caused when the engine burns transmission fluid, such as when the modulator valve is defective, causing transmission fluid to be sucked into the intake system. A stuck closed thermostat could cause the engine to overheat. If the engine overheated badly and repeatedly, a cylinder head could crack and allow coolant to enter the combustion camber. This condition would cause white smoke to blow out the exhaust.
What could cause a 1990 Oldsmobile 98 to overheat?
If the electric fans do not turn on by the radiator ...if the thermostat is stuck closed...low coolant level...bad head gasket...clogged radiator...clogged exhaust pipe or catalitic converter..... All can cause overheating.
What could cause coolant to overflow in my 1998 Honda CR-V?
Several possibilities - from easiest to most expensive: Faulty or inoperable radiator cooling fan - causing overheating. Faulty thermostat - causing overheating. Water pump failure - causing overheating. Blown head gasket - allowing exhaust gasses to escape into the cooling system and expelling the coolant.
Why is your 20001 cavalier overheating with all new coolant parts?
Is "all new coolant parts" everything? Thermostat is the first thing. Is the cooling fan coming on? New radiator cap? If everything is in fact new, take the cap off and start the car to see if the radiator is being pressurized with exhaust. A bad head gasket, cracked head or block could be the problem. Starting it with the cap off will cause coolant to blow out of the radiator.
Still overheating 1991 escort gt after change radiator thermostat hoses fan switch and coolant Any idea?
You should the head gasket. If you go to Autozone, they have a tool that can check for exhaust gas in the coolant which may tell you if you have blown head gasket. Also, check your oil to see if it is milky or if you are blowing white smoke from the exhaust pipes. HTH
Why does your 1990 blazer keep overheating you replaced the radiator thermostat and water pump and you have no leaks except from over flow when its hot and no antifreeze in the oil?
Bad head gasket or... Crack in exhaust port in head. Check exhaust for presence of antifreeze smell or exhaust gas in radiator.
Your car is overheating the water pump went and the thermostat colomn had a whole in it it is still really badly overheating could it be the head gaskets?
On many engines you have to bleed the air from a bleed screw or trapped air will stop coolant from circulating. Thermostat installed backwards? Radiator plugged up? Hopefully it's not head gaskets. If it's blowing white smoke and the exhaust smells sweet, then it is head gasket.
Where is the thermostat located in a 1996 Pontiac grand am and is it possible for it to get stuck and your car overheat?
if it is a four cyl it is most likely under the passenger side of the engine at the end of the bottom radiator hose it is best to take of the exhaust manifold to replace it is possible that it can overheating if it it bad I have a 1996 Grand Am SE, and mine runs hot too. Its probably not the thermostat, if not, then try flushing the coolant system, or the radiator might be clogged up.
Do a car radiator need flushing if it make your car smell?
If you have odors coming from the engine area you probably have something leaking be it oil, engine coolant or exhaust. If the engine is overheating, a radiator flush may or may not help because there are several reasons why it could be overheating. Take it to a trusted mechanic for diagnoses.
Your exhaust emits white smoke and drops of water even when engine warms up but no loss of coolant or overheating?
If there is no overheating or loss of coolant, most likely it is due to condensation in the exhaust system (pretty normal in cool or rainy weather).
What is the best order of elimination for identifying the cause for a 95 Dodge Caravan overheating?
Overheating is almost always cause by either low coolant level, stuck thermostat, plugged radiator, plugged engine coolant passages, blown head gasket, bad water pump, non running electric cooling fan at radiator, or loose water pump drive belt. Check fluid level, check drive belt for pump, look for leaks at the water pump, turn on A/C and see if fan is running, smell exhaust (sweet smell indicates blown head gasket), start engine when cold and radiator cap off. Look for flow of coolant in radiator. No flow usually indicates a bad water pump, or a stuck thermostat. If all these check OK, then you may need to remove radiator and have it cleaned. Replace the thermostat at this time. Bleed the system after reinstalling radiator and filling with a 50/50 mix of antifreeze and distilled water.
How do you replace the thermostat located on a 2003 Pontiac Aztek?
Removal Procedure:Remove the air cleaner and duct assembly.Drain the coolant until the coolant level is below the thermostat.Remove the crossover exhaust pipe.Remove the radiator hose from the thermostat housing.Remove the thermostat housing bolts and clean any sealer from the bolt threads.Remove the thermostat housing and gasket.Remove the thermostat.Clean the mating surfaces.Installation Procedure: Install the ThermastatInstall the thermostat housing and gasket.Install the thermostat housing bolts. TightenTighten the bolts to 25 N·m (18 lb ft).Install the radiator hose to the thermostat housing.Install the crossover exhaust pipe.Install the air cleaner and duct assembly.Fill the cooling system.
What are symptoms of coolant leaking into the cylinder?
Overheating. Loosing coolant with no apparent leak. White smoke with a sweet smell from the exhaust. Coolant in the oil. A foamy substance on the underside of the oil cap. Air bubbles escaping from the radiator. Engine missing on one or more cylinders. Loss of power.
