1999 4.3 Blazer Fuel Pump Problems
#11
No we have not checked that. thanks we will try. This has been a total pain in the rear..lol
We checked the relay by using the one for the horn. Parts store told us it was the same one. Still no luck there.
We hot wired it with the battery charger ( 12 volts @ the pump) We did not try jumping it at the relay yet.
I had lots of problems getting a fuel pump replaced then getting it to run, now I know it sounds obvious, but the pump relay will go in wrong ! Its worth double checking its fitted correctly before chasing around in circles ! Also if your sure relay is working OK, you could just run a new feed to the pump.
Also there is something different in the wiring of the fuel pump/sender unit depending on where you buy it from. I didn't see mine before it was fitted so can't say what ! But now my fuel gauge reads OK, until I put the lights on, then it goes to empty ! But hey, at least its running (after a fashion) which it hadn't been for weeks !
o
Also there is something different in the wiring of the fuel pump/sender unit depending on where you buy it from. I didn't see mine before it was fitted so can't say what ! But now my fuel gauge reads OK, until I put the lights on, then it goes to empty ! But hey, at least its running (after a fashion) which it hadn't been for weeks !
o
Last edited by swartlkk; 12-28-2009 at 12:34 PM. Reason: Combining Consecutive Posts - Please use the EDIT feature to add more information to your post if another member has yet to respond.
#12
This does remind me of the run-around I had with my fuel pump fault. The mechanic who eventually fixed it used a 60W load (a couple of tail lights in parallel) connected in place of the fuel pump to prove the relay, supply and grounds were all ok. After that he re-wired the replacement pump correctly (it wasn't originally and never worked) and we had fuel ! It does seem like certain types of fuel pump don't seem to last long on this model. I've been driving 20 years and never had a fuel pump go on any other vehicle I've owned (Ford,GM,Chrysler,Land Rover,BMW,Saab etc.)
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