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Heat isn't working

Tiny
DLGOBEAVS
  • MEMBER
  • 2002 CADILLAC DEVILLE
The heat in my 2002 Cadillac Deville only sometimes works. I drove 20 minutes with no heat. Then suddenly it started working again. Any thoughts on what might be wrong?
Friday, February 25th, 2011 AT 7:06 PM

5 Replies

Tiny
CADIEMAN
  • MECHANIC
  • 3,544 POSTS
It sounds like the engine is low on coolant. Can you check the level you could have a leak here are two guides to help us get stared.

https://www.2carpros.com/articles/car-is-leaking-coolant

and

https://www.2carpros.com/articles/car-heater-not-working

Please run some tests and get back to us.

Cheers
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Friday, February 25th, 2011 AT 7:54 PM
Tiny
VIPERKORN
  • MEMBER
  • 4 POSTS
Is it the fan that stops working or it just has no hot air? If the fan stops working you might have a faulty relay that heats up if the air goes from hot to cold then the Flap under your dash is flipping back to cold side. Either way its electrical. I would look up where the relays are.
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Friday, February 25th, 2011 AT 7:55 PM
Tiny
DLGOBEAVS
  • MEMBER
  • 3 POSTS
The fan is working fine. The issue is with the air temperature.
Viperkorn- Any idea where I might find the relay location? Cadieman- with that new bit of info I just provide does that change your answer at all?

Much thanks!
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Friday, February 25th, 2011 AT 8:18 PM
Tiny
DLGOBEAVS
  • MEMBER
  • 3 POSTS
Cadieman: You where right the engine was low on coolant I had to replace the water pump. All fixed!
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Friday, February 25th, 2011 AT 8:42 PM
Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
Nice work, we are here to help, please use 2CarPros anytime.

Cheers
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Friday, March 4th, 2011 AT 5:31 AM

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