Fuel Pump Relay Bad?
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Fuel Pump Relay Bad?
I am having an intermittent cranking problem. After the truck warms up (Bronco 2, 4wd, at, 2.9L FI), you have to wait about an hour befoe you can recrank it. It is not getting gas. When listening for the fuel pump, it does not come on. I have put 3 fuel pumps on it in the last 14 months, changed the filters, and 2 weeks ago installed a new fuel pump relay. When I expierenced the problem yesterday, I unplugged the relay then plugged it back, but it did no good. It seems it has to cool down before it will crank. I put a scanner on it this morning and got code 87, (which is Fuel Pump Relay - circuit failure) but i am unsure if the code was a result of me unplugging the relay. Any ideas besides driving it in the local river? THANKS!!!
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Joined: Jun 2001
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Fuel Pump Relay Bad?
I'm having the same problem haven't hooked up a code reader yet, sometimes when I floor the gas pedal I can get the engine to start('86 2.9L FI w/ AT 4x4)Let me know what finally fixes it if you get there before me. Thanks
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From: Wichita USA
Fuel Pump Relay Bad?
Find the inertia switch and disconnect the wiring harness. Look for melted terminals. Replace if necessary. The new switch from the dealer will have new termnals to replace the bad ones
2000 XLT Flare Supercab Sport 5.4-Auto-355LS-Tow pkg-Bedrug-Xtang Tonneau
2000 XLT Flare Supercab Sport 5.4-Auto-355LS-Tow pkg-Bedrug-Xtang Tonneau
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Fuel Pump Relay Bad?
there have been plenty of times i have wanted to drive my truck in to the river, but i think your problem might be solved by a new fuel pressure regulator. you might want to see if you are keeping your fuel pressure when you shut it off. try running it, then shutting it off and on the fuel manifold, there should be a little cap that looks like the little caps to fill up air on bicycle tires. anyways, push it down with a screw driver and see if it shoots gas out of it. if it does...great...if not than try the pressure regulator and the vacuum hose that goes from the regulator to the upper intake manifold. good luck
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Fuel Pump Relay Bad?
>I am having an intermittent cranking
>problem. After the truck warms
>up (Bronco 2, 4wd, at,
>2.9L FI), you have to
>wait about an hour befoe
>you can recrank it. It
>is not getting gas. When
>listening for the fuel pump,
>it does not come on.
>I have put 3 fuel
>pumps on it in the
>last 14 months, changed the
>filters, and 2 weeks ago
>installed a new fuel pump
>relay. When I expierenced the
>problem yesterday, I unplugged the
>relay then plugged it back,
>but it did no good.
>It seems it has to
>cool down before it will
>crank. I put a scanner
>on it this morning and
>got code 87, (which is
>Fuel Pump Relay - circuit
>failure) but i am unsure
>if the code was a
>result of me unplugging the
>relay. Any ideas besides driving
>it in the local river?
>THANKS!!!
>problem. After the truck warms
>up (Bronco 2, 4wd, at,
>2.9L FI), you have to
>wait about an hour befoe
>you can recrank it. It
>is not getting gas. When
>listening for the fuel pump,
>it does not come on.
>I have put 3 fuel
>pumps on it in the
>last 14 months, changed the
>filters, and 2 weeks ago
>installed a new fuel pump
>relay. When I expierenced the
>problem yesterday, I unplugged the
>relay then plugged it back,
>but it did no good.
>It seems it has to
>cool down before it will
>crank. I put a scanner
>on it this morning and
>got code 87, (which is
>Fuel Pump Relay - circuit
>failure) but i am unsure
>if the code was a
>result of me unplugging the
>relay. Any ideas besides driving
>it in the local river?
>THANKS!!!
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