2000 Cadillac Deville over heats

Tiny
DROCKLOVE2003
  • MEMBER
  • 2000 CADILLAC DEVILLE
  • V8
  • FWD
  • AUTOMATIC
  • 134,423 MILES
Hello I have this problem and cant seem to figure it out my car over heats I changed the thermastat in it but I get the same problem I had a compression test done on it but he only took it up to 12 pounds of pressure and the cap calls for 15- 18 pounds it seemed like it was air locked so we got all the air out and it stop for 1 day and it started back up can u please help me
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Thursday, February 21st, 2008 AT 7:13 AM

7 Replies

Tiny
MERLIN2021
  • EXPERT
First thing to check is the cooling fans, turn on the a/c, cooling fan should start with the a/c. If ok turn off a/c, bring car to operating temp, does the fan come on or does it overheat?
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Thursday, February 21st, 2008 AT 7:40 AM
Tiny
ED ARMES
  • MEMBER
My 2000 did the same thing. I had an internal leak which would cause cooling system to cavitate. I too changed water pump, cooling fans and hoses to no avail. Problem was leaking head gasket. Problem solved but is very expensive. Engine and trans :( mission must be lowered out of the car to facilitate the removal of the cylinder heads. This costs about
$ 2000 no matter if the dealer does it or private owned garage. Not all are equipped for this job.
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Saturday, March 1st, 2008 AT 7:56 PM
Tiny
BUZZSAW
  • MEMBER
Sounds like head gasket problem, the head bolts will need to be helicoiled, this is you real problem
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Wednesday, March 5th, 2008 AT 9:05 AM
Tiny
ED ARMES
  • MEMBER
Bolt holes are typically checked as part of repair process.
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Thursday, March 6th, 2008 AT 6:12 PM
Tiny
BUZZSAW
  • MEMBER
That isnt a check its what the problem is. In my 5 years as a caddy tech and group leader I never seen a headgasket fail, its always the headbolts- the threads pull out of the block
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Friday, March 7th, 2008 AT 2:35 PM
Tiny
ED ARMES
  • MEMBER
Ego deserves no reply.

To the man behind the ego, you should have just answered the mans question and been done with it. Any one that can see to do the job would be able to tell if the threads pulled out.
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Friday, March 7th, 2008 AT 6:02 PM
Tiny
BUZZSAW
  • MEMBER
Also ck the water pump and belt tensioner and belt.

Ed sorry but your giving wrong advise, that will cost these people more money for your bad advise. It isn't ego its your bad advise and wrong answers that makes me mad, people getting taken advantage of because of not knowing, that is why I am here
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Monday, March 10th, 2008 AT 2:06 PM

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