89GP_SE Posted September 15, 2009 Report Share Posted September 15, 2009 Specs: 92 Lumina 3.1L This has been a problem for about a month now, when I first turn the key on after the car has sat all night, I dont hear the fuel pump surge. I crank it over a few times and long cranks, after about the third time she pulses, then hit the key and it starts. Now if my memory serves me correctly if you have a bad fuel pump relay, the fuel pump wont go until there is oil pressure the fuel pump will sure because of the oil pressure sending unit.... basically a fail safe. The thing is I replaced the fuel pump relay with a new one, but to no avail it still does this. I connected the test wire under the hood to the positive on the battery and it pulses. I have around 50 psi when idling and I just replaced the fuel pump last year around this time, I dont suspect the fuel pump to be bad. For now I have jimmy rigged my trunk button to pulse the fuel pump first thing in the morning. This works pretty slick by the way, but I really would like to make it work correctly. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted September 15, 2009 Report Share Posted September 15, 2009 replace the fuel pump relay? Quote Link to comment Share on other sites More sharing options...
89GP_SE Posted September 15, 2009 Author Report Share Posted September 15, 2009 replace the fuel pump relay? LOL but I already have done that. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.