I just got my car edged in black today. Put a new steering column in last night. The system is non-vats. Went to turn the car over today, and it wouldn't even click. Then i found out that the new auto shifter was disconnected, so i got that fixed. The car now turned over, but the fuel pump won't run!
I tried looking for fuses, found one, but it didn't change. I double-checked my wires on the steering column. I just get a faint light whenever i test the "pink" wire for the fuel pump up near the fuse box, but by the time it's near the pump plug, it's completely out. I tried running a positive link to the diagnostic system, and the fuel pump ran fine! I think that I have a ground problem, but i don't know which grounds to look for! I've checked over and over. Any help would be extremely appreciated, and pictures would be even better if you have them

 

Check out the fuel pump relay at the firewall on the drivers side. Also check the ground wire that comes off the fuel pump wire harness. It attaches to the floor pan near the front of the drivers seat under the carpet.

 

okay.. I checked both of them..
tight.. The car is COMPLETELY gutted right now.. so i don't have to do any carpet searches.. but I checked the passenger's seat ground, and the drivers seat ground.. both tight.. the signal is still not getting there. I know the fuel pump works, but somewhere in the circut, it gets weak. Where are all the grounds for the fuel pump? isn't there one on the intake manifold? I searched, but i definitely need a pic of that..

 

You are checking the wrong wire. The pink wire goes from the sending unit to the fuel gauge on the instrument cluster. The tan/white wire is the positve wire that you need to check.

 

hmm. but my gas gauge stopped working as well.
is a relay fried on my car?
I tried the relay off of my 87 parts car as well.. still didn't make a difference!

 

Did the gauge work when you had 12 volts applied to the pump. Disconnect the fuel pump relay at the driver side firewall and apply 12 volts to pin "A" of the connector and negative to ground. It is a tan/white wire and has splices that go to the oil pressure switch, Pin "D" of the MAF power relay, and pin "B2" of the ECM, pin "G4" of the driver side firewall connector and from there it goes to the fuel pump. If the pump works, replace the fuel pump relay. If it doesn't, follow the wire routing I listed until you find the problem and fix it.
BTW, it is a tan/white wire at all connections mentioned.

 

okay, thanks trickster, I'll try it here in a little bit and tell you how everything goes. And for some odd reason, the gauge works again? I was messing around last night with something under the dash, and I looked up, it was on!
Oh well, hopefully this will solve the problem

 

well the pump worked.. I wonder if my wiring is screwed up somewhere else!?
anyone have a pic of their battery and the cables around it? I want to make sure I have the right things pluggd in! I still think that this is a ground problem. is it possible to get the ground wire,and relocate the ground?

 

Okay Jeremy, try this. Apply 12 volts positive to pin "A" of the fuel pump relay and ground to pin "B" of the fuel pump relay connector. Pin "B" grounds to the rear of the left cylinder head. This is also the indirect ground for the ECM.

 

hey thanks a lot trickster. Your tips helped me figure out what I was doing wrong, and today I got it fired up! I had to replace my relay, and also my fuseable links were connected wrong up at the battery. Anyways, I got it fired up, as it warmed up, my dual fans came on !!!!! Man i'm so happy right now!