I was driving my car today to the track for the first time after the motor rebuild (details later:-)) and all of a sudden I lose my fuel and the car shut down. I had it towed home because all of the fuses were good. I was just looking things over under the hood and for some reason something told me to look at something. Here there was a box under the radiator fan with a clip in it. I removed the clip and sure enough there was a fuse underneath. It was blown. I put in a fuse and the pump came to life. It fired right up. Went down the raod to the track and got maybe 400 yards and it did it again. Now every time I try to stick a fuse in, it blows. It seems like there is a short. Where could it be? THe clip that is plugged into the pump is in ok. I am not sure where it passes throught the frame though. Can anyone tell me if that fuse runs anything else? It sure is in a WEIRD place. Any info that you can share with me would be helpful. Thanks guys.
Eric

 

It sounds like you've found the fuel pump/ECM power fuse. You may ahve a failing pump or a short to ground in the wiring at the pump, pump relay, auxilliary oil pressure switch, or the ECM. I'd suspect the relay or pump wiring near the tank first. The fuse should be a 20A (yellow) blade type. Does the holder (black box) look like this?

 

One of those wires runs to a 2 wire weatherpack connector near the battery, then it branches off to a whole bunch of places in the car. I've seen that weatherpack connector and the wire just past it melted on more than a few cars, and sometimes it touches metal after that happens and shorts out. That whole wiring setup runs hot on every F-body I've touched. I wouldnt be the least bit surprised if yours is melted and its easy to check.

 

Guys thanks. I just found it. Believeit or not, it was a wire for the factory oil pressure sending unit (that I am not using now) that rubbed against hte auto meter one and shorted out. That was a hard one to find and certainly a weird one. Thanks for all the help.

 

EROCK,

Hey, I got lucky again....

If you're not using the auxilliary oil pressure switch, you realize you have no backup for the pump relay, right? Not that it's a big deal, but just so you know it.