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92 eldo climate control

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eldo
User

Dec 16, 2009, 11:42 AM

Post #1 of 4 (2800 views)
92 eldo climate control Sign In
92 Cadillac eldo - 4.9L -over 200,000mi- The climate control and mileage trip modules on dash are locked-up. climate control stuck on defrost I am unable to change settings- no up or down fan, no rear defrost, no on and off . Also minimal amount of air flow on defrost although blower sounds strong. Mechanic wants to remove dash to check wiring which could become costly. I know the car's computer has reset funtions through the climate control on dash which makes me wonder if it's a connection problem or computer.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Dec 16, 2009, 4:36 PM

Post #2 of 4 (2793 views)
Re: 92 eldo climate control Sign In
It's probably either a bad control head or a bad programmer but it would have to be diagnosed properly to find out which.
Double check the vacuum supply coming from the engine to the programmer. It's under the dash on the passenger side.



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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.



eldo
User

Jan 24, 2010, 7:57 AM

Post #3 of 4 (2757 views)
Re: 92 eldo climate control Sign In
Smile Follow up: Turned out to be a bad instrument cluster. Able to find a replacement one at the yard for $70. Cadillac only made the 92 cluster one year and change it up the next year. the cluster has speedometer,tach, other gages, as well as heating controls.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 24, 2010, 8:44 AM

Post #4 of 4 (2755 views)
Re: 92 eldo climate control Sign In
Thanks for following up. That would be the control head I was referring to. It's a shame they incorporated it into the dash cluster.



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

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.






 
 
 






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