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HEATING PROBLEM 2000 CADILLAC DEVILLE


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jlummis
New User

Dec 7, 2010, 10:19 AM

Post #1 of 8 (4495 views)
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HEATING PROBLEM 2000 CADILLAC DEVILLE Sign In

THE HEATER ON MY 2000 CADILLAC DEVILLE ONLY BLOWS HOT PERIODICALLY. WHEN I START THE CAR I HEAR A CLICKING NOISE AT THE CONTROL PANEL. AFTER THE CAR WARMS UP THE TEMP CAGE FLUCTUATES BETWEEN NORMAL AND A LITTLE ABOVE NORMAL. DO I HAVE A ACTUATOR PROBLEM?


Tom Greenleaf
Ultimate Carjunky / Moderator
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Dec 7, 2010, 10:55 AM

Post #2 of 8 (4493 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

You did mean (TEMP GAUGE) didn't you? If that fluctuates I don't think that's normal for this car. Once warmed up especially if you are in cold enough weather to request heat it should stick to the exact spot all the time IMO.

For now you need to know if coolant is full at the radiator not just the tank you can see thru. If air or some combustion gasses are getting into cooling system the heat transfer will be all screwed up - erratic if slightly low and no heat if very low and this car should have a warning light for low coolant when low enough to cause real engine problems,

T
_________________________________________
Long retired now


Hammer Time
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Dec 7, 2010, 11:48 AM

Post #3 of 8 (4488 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

The clicking sounds like an actuator problem. If the coolant is full and the heater hoses are both hot, it probably is a blend door actuator problem.




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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



jlummis
New User

Dec 7, 2010, 10:26 PM

Post #4 of 8 (4480 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

I replaced the actuator on my Ford Windstar which was easy. Will changing it on my Caddy also be easy? I'm assuming it behind the climate control panel?


Hammer Time
Ultimate Carjunky / Moderator
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Dec 8, 2010, 5:49 AM

Post #5 of 8 (4470 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

I guess that would depend on what position you can twist your body into to get up under the dash. The flat rate labor is under 1 hour but you may have to be Gumby to reach it.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Dec 8, 2010, 10:41 AM

Post #6 of 8 (4466 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

Thanks HT for jumping on that. I stopped as there were several models of "DeVille" listed and all showed left and right actuators suggesting temp controls were all dual zone which stopped me. No info on time to do that I have. Under an hour sure seems pretty simple - good.

As you said if cooling system is full ( I focused or the word "erratic" and didn't concentrate on any noise) it's just having a problem holding the requested blend IMO.

Thanks for jumping on this one,

T
_________________________________________
Long retired now


Hammer Time
Ultimate Carjunky / Moderator
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Dec 8, 2010, 10:45 AM

Post #7 of 8 (4461 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

I saw the duals too but since there was no mention of heat coming from either side, I went with the main one on the driver's side.




~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Tom Greenleaf
Ultimate Carjunky / Moderator
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Dec 8, 2010, 10:49 AM

Post #8 of 8 (4457 views)
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Re: HEATING PROBLEM 2000 CADILLAC DEVILLE [In reply to] Sign In

I plead IDK and would just get to one and feel it while changing request and watch for rods to move or not if it even uses them??

Cadillacs have been a different bird for quite a while to me,

T
_________________________________________
Long retired now




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