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I have a 2000 2

Tiny
WALLY1985
  • MEMBER
  • 2000 CHEVROLET CAVALIER
  • 210,000 MILES
I have a 2000 2.2L Cavalier and no heat at all. I've changed the thermostat, the temp sensor, the heater core and flushed it. I still got nothing, barely lukewarm. Could it be the blend door? And on a side note I have full temp at a stand still and as soon as I start driving I lose all my heat
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Wednesday, March 13th, 2013 AT 11:49 AM

2 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. It is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.
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Wednesday, March 13th, 2013 AT 12:26 PM
Tiny
WALLY1985
  • MEMBER
  • 3 POSTS
Now what would cause me to have normal temp at an idle but when I start driving the temp bottoms out and I lose all heat? Bad thermostat?
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Wednesday, March 13th, 2013 AT 8:53 PM

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