1990 Cadillac Deville blown fuses

1990 CADILLAC DEVILLE
11,700 MILES • V8 • 2WD • AUTOMATIC
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LMHPOE79
  • MEMBER
  • 1 POST
the fuse for the body computer module, air conditioning and fuel data center (fuse #7) keeps blowing - approximately every two weeks.
Alternator is good - battery is good.
What would cause this problem?
Jun 18, 2009 at 9:46 AM
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FACTORYJACK
  • ✓Experienced Mechanic
  • 4,159 POSTS
It's possible that your A/C clutch coil has high resistance, or a bad clamping diode in the coil connector is allowing a voltage spike to open the fuse. Does the compressor function(a/c working?)? Not sure why this would happen every couple weeks though. It is possible that a short in the circuit exists. You can try disconnecting the compressor clutch coil, and see if it continues to blow. Pay particular attention to what happens prior to knowing that the fuse has blown, i.e. trunk opened, seat moved, something that may lead to an area to focus.
Jun 18, 2009 at 3:32 PM
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