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2000 cadillac deville heater


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lex859
New User

Dec 21, 2011, 8:23 PM

Post #1 of 2 (2661 views)
2000 cadillac deville heater Sign In

I have a 2000 cadillac deville and the heater blows hot only when i hit the gas. If im stopped at a light or something it starts to blow cold. Sometimes if i rev it up it goes back hot. Coolant seems to be fine sometimes it smells under the hood. I have replaced the water pump and thermostat but still have the same problem. Any advice would be gladly appreciated. Thanks


zmame
Veteran / Moderator
zmame profile image

Dec 22, 2011, 10:46 AM

Post #2 of 2 (2622 views)
Re: 2000 cadillac deville heater Sign In

I would try flushing and back flushing the heater core, might be partially plugged.

Take the 2 hoses off pour some CLR and let it sit in the heater core for a while then back flush and flush thoroughly.






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