87 F-150 fuel pumps do not run
12-26-2008, 04:32 PM
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87 F-150 fuel pumps do not run
The fuel pumps will not turn on. I have replaced the following items:
front tank fuel pump
HP fuel pump (on the frame)
fuel pump relay
EEC relay
There is 12v to the fuel pump relay & EEC relay as the wiring diagram indicates.
at the other terminals on the EEC relay I measure about 2.75 volts with the key on.
The Inertia switch & the fuel tank switch show continuity when tested.
What else should I check for?
front tank fuel pump
HP fuel pump (on the frame)
fuel pump relay
EEC relay
There is 12v to the fuel pump relay & EEC relay as the wiring diagram indicates.
at the other terminals on the EEC relay I measure about 2.75 volts with the key on.
The Inertia switch & the fuel tank switch show continuity when tested.
What else should I check for?
