Hey guys i ve got a 93 5spd and im not getting pwr to the fuel pump. i check fp relay and fuses in driver kick panel am i missing something HELP its driving me insane !!!!

 

No power inside the tank or outside the tank.

My connection inside the tank went bad. I had juice outside but not inside. Pulled it apart, fixed it, and siliconed it back together.

If you don't have juice outside the pump, work your way back, fusebox, relay, ECU.

Chris

 

did all that swapped the fuel pump relay, checked all the fuses in the drivers side kick panel swapped ecu with a spare still no pwr at the plug connecting the fuel pump outside the tank. the car has been sitting but it started a month ago with no problems

 

Did you jumper the F/P terminal under the hood? In the diagnostic connector, stick a jumper wire in the F/P terminal and the other end to ground. With the key on, you should see voltage back there.

If not, you'll have to follow the circuit. Might also want to look at the fuel pump resistor relay, which switches voltage from 9 to 12 to the pump - I believe it's under the cruise control. If it's unplugged or something goofy, that could be a problem.

Use your meter and a shop manual. Look at the fuel pump circuit and find out where you're losing the 12v.

Dale

 

ill check the fuel pump resistor if i can find it

 

I recently found a computer that did not trigger the circuit opening relay to operate, but it worked fine otherwise...the only way the fuel pump would get voltage was when the FP and GND terminals were jumpered (which does the same thing the computer would do if it were sending the signal). Another computer solved the issue.

 

yea, i had a problem with my fuel pump not coming on.....opened up the gas tank and found this!!

 

 

Make sure your test procedure is valid. The fuel pump will get power with the key on and a jumper in the service connector. It won't get power by simply turning the key on (but it will get power when cranking).

-Max

 

BUt, jumpering the terminals does not tell you whether or not the ecu is sending the signal to turn it on during cranking/running, either.

 

http://pg.photos.yahoo.com/ph/trippi...65.jpg&.src=ph

maybe now

 

Ohhhhhh, god it's a scary thought to have frayed/broken/shorted? wiring in the vapor of the gas tank.

Dave

 

well then i didnt try turning the car over to check to see if there was power .Maybe the pump is shot

 

sunday 12:30 another attempt to get it running ill be back with the details

 

If you look at your fuel pump connections on the motor itself you'll find them bare and immersed in fuel. It doesn't explode...


I had the same problem. The pump ground on the underside of the cover was bad.

Wow! Mine wasn't that bad!

 

...unless the wires are so frayed that the live wire finds intermittent contact with the ground wire. Obviously, when they are spaced sufficiently far apart and in good condition it's quite safe. Fortunately I think fires originating in the fuel tank are quite rare.

Dave

 

hey guys that wasnt my fuel pump wires it turned out to be the fuel pump