I am not for sure, but there might be an EEC relay on the mustangs. I work on my dad's 5 plow trucks and if the EEC relay goes bad then the fuel pump won't work.
Just yesterday I fixed our '90 F-350, had a leaking gas tank and thought it had a bad fuel pump. I tested the old fuel pump after I pulled it out of the tank, and it worked, OH SH$T. Well after getting the new pump in an hooking the electrical up I wanted to test the pump, it wouldn't work.
So I start to diagnose everything and I started with the relays (EEC and fuel pump). Both were fine, but when I toggled the fuel pump relay with the test light it barely lit it up.
Immediately I tested all switches, started with the inertia switch, then the auxilary fuel tank switch. I jumpered the inertia switch and that wasn't the problem. I jumpered the front tank on the auxilary gas tank switch and the fuel pump pumped some gas. The switch went bad and the resistance went very high (almost infinity), therefore not alowing any current to flow through (causing the test light to barely light up).
These are some suggestions to try to remedy your problem. Bypass the inertia switch first by jumping the two wires, then check the EEC relay (if there is one), also check all your grounds. Make sure the relays have dielectric grease on them when you take them off, if they don't put some on, as they may not be making a good connection.
Sorry this was a little long, but I have some experience with EEC stuff and I figured I could help.
------------------
88GT stock shortblock, ported GT-40 iron heads, ported Edlebrock Performer intake, 24# inj, Pro-M 75mm Bullet MAM, 3.73, hurst short throw, F-303, electric fan, alum rad, FMS HD clutch, R134a ac conversion, 70mm TB , and some other stuff I probably forgot, best run so far on ET streets is 13.02@106 with a 1.87 60ft.
[This message has been edited by 88GT5.013.02 (edited 01-03-2001).]
[This message has been edited by 88GT5.013.02 (edited 01-03-2001).]
[This message has been edited by 88GT5.013.02 (edited 01-03-2001).]
|