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What would cause a 98 Pontiac sunfire to overheat if the water pump thermostat and temperature sensor have been replaced and it still overheats?
Check to see if fan turns on when the temperature reaches 3/4 of the way it should stay over half and between three quarters to the red line fan might be shout or relay.
PS brown foam only indicates mosture in the block common on most vehicles. two if it was a head gasket crack between water jacket and oil. Oil would go into the collent and radiat into the over flow bottle now if it is cracked into the cylinder easy check is remove radiator cap and have someone crank the motor over should have collant spraying out of the radiator due to compression
AnswerCould be the head gasket check your oil to see if it has water mixed in with it Answermight need to flush radiator, is thermostat in correctly?By correctly, I think it might be one of those where it's possible to put the stat in backwards.I agree blocked radiator (first thought, actually) now agree head gasket likely suspect.Take your oil filler cap off and see if it's all gunked up with a brown foam.Phil
What else can I help you with?
Why does my 1995 Toyota tacoma overheat I replaced the water pump and I still only get about 8 miles and it overheats?
Try replacing the thermostat.
2000 transam that overheats when you turn the ac on you have replaced the thermostat and water pump you have also flushed the radiator 3 times and checked the air dam nothing worked it still overheats?
check your fan clutch if its weak it will overheat
When you Replaced the thermostat in 98 deville with a 4.6 and it still overheats any suggestions?
theyre maybe an air bubble in the block causing it to overheat,or it could also be a bad water pump
My temp gaugebmw 318 e46 rises for no reason can anyone help already replaced the thermo sensor?
Does that mean that you replaced the thermostat AND the sensor? If not, you really need to replace the thermostat. A sticking thermostat can cause temperature swings and potentially overheat the engine. BTW, BMW engines tend to have serious problems when they overheat. Don't let it overheat or you might be buying a new engine.
What can cause your 2001 Chevy Malibu to overheat?
if the pump and thermostat have been replaced on a 2001 malibu and it overheats and the heat doesnt work now but the air does. do it need bleeding still , will air in the line still cause that problem...
Your 2000 Durango 4.7L runs a good temperature while driving but overheats when in idle Have replaced thermostat flushed rad and no fluid loss Why overheat in idle?
Wouldn't be your thermostat, its going to be the fan motor for your cooling system. Because the wind that hits the motor while driving cools the motor but when you come to a stop and idle there isn't anything to cool the motor
1993 roadmaster overheats and then cools down?
I would guess that the thermostat is not opening at the proper temperature. Once it does open proper circulation brings it down to the correct operating temperature. I think it should be replaced.
Why does car overheat?
There could be many reasons. Not enough coolant or bad flow, faulty thermostat, low oil. If the coolant freezes then it will overheat. If your car continues to overheat then you should have the coolant flushed and thermostat replaced.
What causes a 1996 Nissan Altima to overheat?
could be your thermostat is stuck or perhaps and needs to be replaced.
Why would a van overheat after changing the thermostat and water pump?
Assuming it did not overheat before you replaced thermostat and water pump you may have installed the thermostat backwards. It is also possible the cooling system wasn't refilled properly and was air bound.
1995 Chevy cavalier z24. replaced water pump thermostat and still over heats coolant in resivoir does not boil. overheats underload?
had the same problem with a sibring,took to the garage,they replaced the thermostat and gasket and found a hairline crack in the thermostat housing they replaced the housing and everything was fine then
I had the thermostat radiator cap and radiator replaced on a 2001 Mitsubishi galant and it still overheats sitting at idle and while driving Any ideas on what the problem is?
have the engine timing checked. if the timing is wrong the engine will overheat, are you loosing coolant?is the fan working, is the water pump working?
