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Climate control will not work went out no display

Tiny
CADYFRANK
  • MEMBER
  • 1994 CADILLAC FLEETWOOD
  • V8
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
I did the check to see if it was any good checking said fuses in the fuse box and it failed test. I now I noticed under the hood where the other fuse box is that the A/C fuse was blown. Change the fuse and it blew too. What is the problem making the fuse to keep blowing?
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Sunday, October 20th, 2019 AT 4:26 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Can you tell me the fuse number and location of the 2 fuses that failed?

https://www.2carpros.com/articles/how-a-car-fuse-works

I need them to see what they actually control. A failing fuse comes from too much current being pulled by either a bad component or short in the wiring harness.

https://www.2carpros.com/articles/how-to-check-wiring

Roy
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Sunday, October 20th, 2019 AT 6:31 AM
Tiny
CADYFRANK
  • MEMBER
  • 12 POSTS
The fuse is in the underhood U/H electrical center the fuse number is 20 amp air pump.
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Sunday, October 20th, 2019 AT 6:48 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Okay, what about the one in the instrument panel fuse block?
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Sunday, October 20th, 2019 AT 6:50 AM
Tiny
CADYFRANK
  • MEMBER
  • 12 POSTS
That one is fine.
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Sunday, October 20th, 2019 AT 6:53 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
The fuse you told me under the hood was for the air pump.

I need the fuse number, not the fuse rating. The fuse you told me is for the air pump, not the A/C.

There is no other 20 amp fuse in the fuse block.
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Sunday, October 20th, 2019 AT 7:00 AM
Tiny
CADYFRANK
  • MEMBER
  • 12 POSTS
Fuse number 14.
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Sunday, October 20th, 2019 AT 7:18 AM
Tiny
CADYFRANK
  • MEMBER
  • 12 POSTS
I am sorry the fuse number is 14 and you are right it is the air pump fuse.
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Sunday, October 20th, 2019 AT 8:02 AM
Tiny
CADYFRANK
  • MEMBER
  • 12 POSTS
  • 1994 CADILLAC FLEETWOOD
  • V8
  • 2WD
  • AUTOMATIC
  • 128,000 MILES
HVAC went out first. The panel blinked the no A/C or heat, but I have low air flow, but stuck in the A/C mode.
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Tuesday, October 22nd, 2019 AT 6:21 PM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Welcome to 2CarPros.

It sounds like the HVAC control module may have failed. What you need to do is check for diagnostic codes. This vehicle has an OBD1 system. Here is a link that explains how to retrieve the codes. Do this and let me know what you find.

https://www.2carpros.com/articles/buick-cadillac-chevy-gmc-oldsmobile-pontiac-gm-1983-1995-obd1-code-definitions-and-retrieval-method

If you can do that, let me know what you find or if you have other questions.

Take care,
Joe
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Tuesday, October 22nd, 2019 AT 6:22 PM (Merged)

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