Fuel Pump dead?
Fuel Pump dead? It's been about a year since I bought the racetronix/walbro pump, but my car hasn't run in 8 months. Probably less than 2000 miles on the pump.
Just cranked it up Monday night, then again Tuesday, and again today and getting plenty of pressure at the rails. I killed the engine, then went to crank it back up and it wouldn't start. Turned the key on and didn't hear the pump. I jumped it using the fuel pump prime connector and still nothing.
Does this mean the pump just burned out or could there be another culprit? The car is a 93 and the motor/harness is a 95. Doesn't the connector bypass the relay?
Just cranked it up Monday night, then again Tuesday, and again today and getting plenty of pressure at the rails. I killed the engine, then went to crank it back up and it wouldn't start. Turned the key on and didn't hear the pump. I jumped it using the fuel pump prime connector and still nothing.
Does this mean the pump just burned out or could there be another culprit? The car is a 93 and the motor/harness is a 95. Doesn't the connector bypass the relay?
Last edited by mguidry629; Oct 20, 2011 at 08:07 AM.
Anybody have any ideas? The pump was running nice and quiet, no problems what so ever, then I turned the key off to kill the motor, waited a few seconds and turned it back and the fuel pump is not priming or anything.
The prime connector was working the other day because I used it to empty the tank of old gas. So I know I have a good connection, but does it bypass the relay or not?
If I get under the car and get to the harnesses by the rear, how can I test it to confirm if it's the pump?
I know the relay is under the driver kick panel. Should you hear it click when the key is turned on?
The prime connector was working the other day because I used it to empty the tank of old gas. So I know I have a good connection, but does it bypass the relay or not?
If I get under the car and get to the harnesses by the rear, how can I test it to confirm if it's the pump?
I know the relay is under the driver kick panel. Should you hear it click when the key is turned on?
Put power to the grey wire in the Racetronix harness to pull in the relay, or remove the Racetronix relay & jump the 2 large red wires in the Racetronix harness.
I'm assuming you have the Racetronix wiring harness, if not you should have.
I'm assuming you have the Racetronix wiring harness, if not you should have.
It was working when I first cranked it today, then after a few cranks the fuel pump quit working again.
I verified the fuel pump is working by jumping the relay. So I thought the relay was bad. I grabbed the relay off of my parts car and still not working, so I guess it's not the relay. I jumped 30 to 87 on the relay and pump is running strong with the ignition on.
So now that I know the fuel pump is working and it doesn't appear to be a bad relay, what else could it be?
Yes, I have the racetronix harness. Any other suggestions? Need help before I
I verified the fuel pump is working by jumping the relay. So I thought the relay was bad. I grabbed the relay off of my parts car and still not working, so I guess it's not the relay. I jumped 30 to 87 on the relay and pump is running strong with the ignition on.
So now that I know the fuel pump is working and it doesn't appear to be a bad relay, what else could it be?
Yes, I have the racetronix harness. Any other suggestions? Need help before I
I guess I should also mention that the pcm is throwing codes 16, 41,42,51. I think that's them. I can confirm later, but I'm concerned now that I blew the pcm somehow (51). It was running fine and the car killed like someone turned the key off. That's when it threw all 4 of those codes.
Now I can't read or program the pcm either.
Now I can't read or program the pcm either.
Just to update for those folks searching in the future with similar problems:
It appears I fried my pcm. I have a 94 buick roadmaster pcm that I plugged in just to see if that could be the problem. I switched the key on and the fuel pump is priming and I'm able to read and communicate with my laptop, so it's obviously something with the pcm. I didn't crank it because the pcm's not tuned and it's an EEB pcm so I can't just load my tune on it (I don't think).
It appears I fried my pcm. I have a 94 buick roadmaster pcm that I plugged in just to see if that could be the problem. I switched the key on and the fuel pump is priming and I'm able to read and communicate with my laptop, so it's obviously something with the pcm. I didn't crank it because the pcm's not tuned and it's an EEB pcm so I can't just load my tune on it (I don't think).
