overheating
This is what I have..
2000 cavalier 2.2 Started to overheat Friday.. Both driving and idling.. 1. Tested for a bad head gasket (Combustion tester).... no combustion gas in cooling system.. 2. Replacement t-stat--- nothing Last year (running great until this Friday) New water pump Flushed heat core (CLR and water) The hose coming off t-stat stays cold.. So coolant is not flowing.. Questions Could it be heat sensor? Clogged heat core? (we have heat).. Bad reverser cap? Radiator is newer and fan kicks on.. Thanks, Bug |
Welcome to the forum :)
I might have thought possible bad sensor, but when you say that the radiator hose is cold, that tells me you have a flow issue... that is T-stat or water pump...even new t-stats and water pumps go bad.... |
Air in cooling system?
Water pump? |
If I take out t-stat and it runs fine.. Than bad t-stat.. If not then bad water pump..
We have all air out of cooling system.. Nice flow of coolant.. |
It's not hard or expensive to bypass the heater core. That will help point to the problem area. Use a new hose to go from the small metal tube (under the larger tube top front that goes to the top of the radiator) to the thermostat housing. If all goes well then you still have a restricted heater core problem. I BACK flushed my heater core using CLR and have had no problems since (knock on wood :)
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We did a clr flush this past summer..
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Originally Posted by bugrollei
(Post 268440)
We did a clr flush this past summer..
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Flushed it out.. I didnt see anything come out of the core, block or radiator.. I am changing the water pump now.. Please update you in a few.. Thanks...
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You didn't mention if everything was okay when driving or just when stopped?
Is your radiator fan working? |
Any updates? Inquiring minds want to know.
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