Overheating problems Even took out the thermostat?
JHEAD85
MEMBER
2004 CHEVROLET CAVALIER
2.2L
4 CYL
2WD
AUTOMATIC
90,000 MILES
Replaced radiator. Tstat. And water pump. Even took out the thermostat bit nothin. If I take the top radiator hose off no coolant is coming out. Only when car warms up the coolant starts to boil. New pump new everything. I give up. Even used special tool so not to mess up timing for water pump. The original pump I took out had nothin wrong with it but replaced it anyways since I had it. Something's not spinning the pump anyone got any advice.
2004 Cavalier Ecotec 2.2
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Thursday, April 24th, 2014 AT 1:35 PM
5 Replies
ASEMASTER6371
MECHANIC
52,797 POSTS
Good afternoon my name is roy and I will help
I assume that it overheated prior to the replacement of all the parts. from the overheating you may have damaged the head gasket which would explain the issue that you have.
have the cylinders tested for a leak down to see if the head gasket is good.
Roy
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Thursday, July 8th, 2021 AT 10:44 AM
JDL
MECHANIC
16,098 POSTS
Just a thought, if the water pump is chain driven, can you tell if water pump gear is turning, when you crank it?
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Thursday, July 8th, 2021 AT 10:44 AM
JHEAD85
MEMBER
4 POSTS
Well that's what ima do in the next day or two.I've read somewhere that there is a shear pin for the shaft that hold it in place and most likely it broke witch is made to so not to mess up timing. So the car is still timed right but the pump is not spinning at all.I know the gasget is shot from this witch ima replace when I find out out how to get this pump to turn. No sence in replacing that until I fix the water problem. Car runs fine just no coolant is circulating. Any input anyone :)
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Thursday, July 8th, 2021 AT 10:44 AM
JHEAD85
MEMBER
4 POSTS
Hey Roy thanks.I know the gasket is wore down from this problem. At the moment the gasket is not to bad don't smoke or nothin. But I know a small amount is getting through but having that wouldn't cus the water not to be flowing. All the lines are clean and clear as well as radaitor. Soon as I get a change I'm going to rip front engine cover off and find out if I can see the actual shaft for the water pump is turning itself.I know for sure that's the problem. Something is not turning the pump and I know 100% I replaced the pump correctly and with the special tool for Eco tec engines. It was having the same problem before I replaced pump.I just figured the pump broke and stopped spinning but that's not the case something else is the problem.