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Heater problems luke warm

Tiny
DARMIL
  • MEMBER
  • CHEVROLET CAVALIER
I have a 89 caviler with 170,000km's. The problem I'm having is. The heater blows luke warm air.I've replaced the heater core, rad cause it needed to be, and thermo stat twice cause. I thought I bought a faulty thermo stat.
When you install the heater core if you mixed up the in and out coolant hoses. Will that make it blow luke warm.I'm not sure at the time if I mixed them up. Cause I can't figure it out, why it's not hot. Can anybody help?
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Thursday, February 22nd, 2007 AT 11:02 PM

3 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Need to be sure the hot/cold blend door is working properly. It is under the dash in the plenum assembly
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Friday, February 23rd, 2007 AT 8:17 AM
Tiny
BHUGG
  • MECHANIC
  • 157 POSTS
Another thought.
Is the A/C running at the same time. Look at the comperssor under the hood and see if the compressor is running. If it is, there is your problem.

Let us know. Get back to the forum.

If we help, let us know and give us a vote.
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Sunday, February 25th, 2007 AT 11:10 AM
Tiny
DARMIL
  • MEMBER
  • 2 POSTS
My car doesn't have A/C so I don't think thats the problem.
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Sunday, March 4th, 2007 AT 9:20 AM

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