1995 Cadillac Seville Fuel pump fuse keeps blowing

Tiny
ANNAYELENA
  • MEMBER
  • 1995 CADILLAC SEVILLE
  • V8
  • AUTOMATIC
  • 121,000 MILES
The fuel pump fuse keeps blowing on my 1995 Cadillac Seville SLS when idling for a couple of minutes. I replaced the fuel pump relay (and of course the fuse each time it blows). What could be causing the fuse to blow?

I was told it could be the filter. Is that possible?
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Sunday, December 7th, 2014 AT 5:50 PM

6 Replies

Tiny
HOMER1967
  • EXPERT
There is a larger than normal draw on that circuit. Based on the information you have provided I would suggest that you either have a severly restricted fuel filter or an overheating fuel pump. You could try the filter first and see if it helps, but don't be surprised if the pump is already damaged.
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Sunday, December 7th, 2014 AT 6:01 PM
Tiny
WRENCHTECH
  • EXPERT
This is a different expert.
The fuel filter isn't going to blow a fuse and neither is the pump unless it is shorted out internally. My suggestion is to replace the oil pressure sender. It provides a redundant power feed for the fuel pump, powered by the same fuse and can short at specific oil pressures.
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Sunday, December 7th, 2014 AT 6:26 PM
Tiny
HOMER1967
  • EXPERT
B.S. Wrenchtech, so your saying that a severly restricted fuel filter could not put to much strain on the pump and make it pull to many amps and blow a fuse?
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Sunday, December 7th, 2014 AT 6:57 PM
Tiny
WRENCHTECH
  • EXPERT
Yes, I am. A severely restricted filter could elevate current draw slightly but never to the point of blowing a fuse. I see pumps seized solid with the relays jumped out and still don't come close to blowing a fuse, especially at idle like this one when voltage is at it's lowest.
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Sunday, December 7th, 2014 AT 7:22 PM
Tiny
ANNAYELENA
  • MEMBER
I tried looking up the oil pressure sender but could only find a oil pressure switch. Is that the right part?
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Monday, December 8th, 2014 AT 1:00 PM
Tiny
WRENCHTECH
  • EXPERT
Yes, just another name for it.
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Monday, December 8th, 2014 AT 1:19 PM

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