1996 Chevy Cavalier No Heat

1996 CHEVROLET TRUCK
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GR-ELVIS
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I have a 96 cav 2.2 and just replaced head gasket, thermostat, water pump flushed system and there is no heat. The Temp guage goes all the way to red and then drops to cold, the low coolant light is on but the coolant is full, What the heck is going on? What would cause this problem? PLEASE HELP! gr-elvis
Jan 29, 2007 at 3:40 AM
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HRYK2646
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you may need a new heater core. Or it is plugged you can blow it out with a compresso.Where it plugs in a the fire wall. Do it when its cold.
ray
Feb 4, 2007 at 10:45 AM
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SERVICE WRITER
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Plugged heater core may be true. The low coolant light is probably the "low coolant light" sensor and I wouldn't worry about that. Not related to the issue. T-stat although be may be bad, more commmon than you would want to believe.
Feb 4, 2007 at 11:14 AM
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HRYK2646
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They replaced T-stat. unless they got a bad one.You can test the t-stat by placing ina pan of boiling water to see if it opens.
Feb 4, 2007 at 11:30 AM
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SERVICE WRITER
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[quote:352044a64a="hryk2646"]They replaced T-stat. unless they got a bad one.You can test the t-stat by placing ina pan of boiling water to see if it opens.[/quote:352044a64a]

I realize they did, new ones have a higher failure rate than one would expect....don't know that's the cause, but wouldn't overlook it either....
Feb 4, 2007 at 12:07 PM
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HRYK2646
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I agree with you.I hope this helps them.I not a mechanic but i've had to work on alot of vehicle in my time.Cars are getting harder to work on with all the computer stuff.Butt heater ploblems are usually pretty simple. Good luck!
Ray
Feb 4, 2007 at 12:52 PM

Suggested Repair

Check the heater core for a blockage and blow it out with compressed air at the firewall when cold, or replace it if needed. Also test the thermostat in boiling water, since a new unit can still fail to open. The low coolant light is likely a sensor issue and unrelated.

Conversation Summary

The owner of a 1996 Chevy Cavalier 2.2 has no heat after replacing the head gasket, thermostat, and water pump and flushing the system. The temperature gauge swings from hot to cold, and the low coolant light stays on even though the coolant is full. Replies suggest a plugged heater core and a possibly defective thermostat, while treating the low coolant light as unrelated.

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