fuel problem

[bertha66]

Sorry, I posted this in the Performance and upgrades so I will redo the post.---I have a Black 93 SHO and after putting in a new clutch the car run good for about 3 weeks, then started getting a intermentant fuel pressure. For a couple of days it would run fine and without any warning it would stop running and no fuel pressure at the fuel rail. After sitting it would restart. I put in new pump, and it was a no go. Voltage at the fuel tank was 6.75 volts, But when I hooked up the pump voltage droped to 0. Put in a mult-use relay, I was told that the fuel pump relay is in it, still no go. Checked the under hood grounds, all good. Any ideas anyone would here woould be great. Thanks to all

 

[Racer X]

I would start by cleaning the contacts on the IRCM and measuring the requsite voltages from there. The IRCM can be found mounted to the front radiator support, with a fairly large harness connected to it.

 

[bertha66]

Thank you for the responce, IRCM can you tell me what this stands for? I changed this unit with another, a used one, still getting 6.7volts at the back. I did get 12 volts going in to it.
Thanks, Allen