Fuel Pump Problem

[ericrluoma]

I've got a 99 Grand Prix 3800 series II supercharged. Think I might have a bad fuel pump - not so sure. I noticed the problem when I went to start the other night. Turns over, but gets no gas. I noticed I didn't hear the usual hum of the fuel pump kicking in. However, there is no voltage at the pump when ignition is on. The fuel pump fuse is good - tried swapping the two fuel pump relays in the fuse box - thinking one was bad - no dice. Thinking maybe the fuel pump resistor, but there doesn't seem to be any power at the harness to the resistor. I know it wouldn't be hot, but thought you could jump across the two wires to get a result. I would suspect the fuel pump, but since there isn't power to that, I question my original diagnosis. Not sure what to do at this point - any suggestions? I don't want to start buying unnecessary parts and doing unrelated repairs. I considered the MAF or maybe that Fuel Pump resistor, but I've done some reading on the forum and don't have exactly the same symptoms. Any help would be appreciated.

 

[UR LOSN]

Moved to Correct section.

 

[TDCRacing]

Try bending pin 85 on the relay over. This will bypass the resistor. If it's a bad resistor you will know by doing this.

 

[ericrluoma]

Oddly enough - the car started this morning - I could hear the fuel pump engage, but this afternoon would not start - same symptoms again. I'll try the resistor solution and let you know what happens..... Thanks!

 

[Iron Indian]

Sounds like a resistor problem to me, i'd definatly check that out...

 

[Jerime]

ok so im having the same problem. but mine was running just fine and now wont. have no fuel. i bent pin #85 over and still nothing. i have a VERY dim light (test light) at the fuel pump (low voltage) im assuming! does this mean the fuel pump itself is bad? i have already replaced both relays! and where is the resistor located?