1988 ranger 2.9l v6
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Joined: Jan 2002
Posts: 4,907
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From: suburban atlanta
Likely the fuel pump is not getting the signal from the computer that the engine has started, so it does not enable the pump. The system will 'prime' for 3-5 seconds when the key is first turned from OFF to ON. The engine will start & run on that prime, but will fall on its face if the pump(s) are not energized after start.
You can bypass that with some switches & relays, not really thinking through the list of needed parts. One should not bypass the inertia switch on the floorboard behind the top of the carpet/mat, under the heater. It protects in case of accident or rollover.
The pump should be powered [via the fuel pump relay] when a jumper wire is put into the EEC-IV test port. It will run full time with a jumper used to retrieve codes, or should.
tom
You can bypass that with some switches & relays, not really thinking through the list of needed parts. One should not bypass the inertia switch on the floorboard behind the top of the carpet/mat, under the heater. It protects in case of accident or rollover.
The pump should be powered [via the fuel pump relay] when a jumper wire is put into the EEC-IV test port. It will run full time with a jumper used to retrieve codes, or should.
tom
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