Hot Fuel Pump Relay
07-17-2008, 12:20 PM
#1
5th Gear
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Location: Evergreen, CO
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Hot Fuel Pump Relay
I was replacing a fuse in the front fusebox on my '86 930 and I noticed that the fuel pump relay (the one closest to the cockpit) was pretty hot. I had just pulled into the garage after a drive that lasted about an hour. I haven't checked the fusebox before after running the car so I'm wondering if this is normal- or if I should be concerned. Other than the hot relay there aren't any issues with starting and the car runs great. If this isn't normal does it mean I've got a fuel pump that's about had it?
07-17-2008, 12:37 PM
#2
Drifting
Join Date: Feb 2006
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This has been discussed before...and the consensus was that they run a bit on the warm side....not too hot to keep your hand on it, but definitely on the warm side. Do a search here and you'll run into the previous comments on the subject.
07-22-2008, 11:28 AM
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Intermediate
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Fix
There is a good fix available here or on Pelican that essentially direct wires the pumps to the battery (taking the existing fuse out of the loop) with a separate inline fuse for the the front and rear pumps. It is simply installed and solves the problem.
07-27-2008, 09:20 PM
#6
Three Wheelin'
You better keep a couple of relays in the glove box. One day you will walk out to the car and it will not start. My 88 did the "hot thing" until the fuse box wiring shorted out (burned out the connection points). I had to splice in a thicker gauge wire and by-pass the fuse panel with an in-line fuse. Never had a problem since.
