Question about 1991 Ford Explorer

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1991 ford explorer

If it were the fuel pump wouldn't that problem be more at full throttle then half throttle I just purchased this truck and really don't know any history bought at a repo action it looks like the throttle position sensor was just replaced

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Before you get into any real big expense look into the frame on the drivers side of the door that is where the fuel filter is located also look under the hood and check out the fuel pump relay the lid on the fuse box should tell you which one it is also go to Walmart and get a bottle of STP gas treatment because you have water in the gas as well

Posted on Jan 14, 2009


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Car ran fine shut it off came back it didn't want to start. started went about half a mile sputered an died wouldn't start back up 1991 subaru loyal wagon

Hi sounds like the typical fuel pump or filter problem with these cars, best way to tell is take top fuel hose off on fuel filter under hood, turn key on ignition (not start) and fuel should pump out, if not its your pump, just beware of doing when engine is hot

Apr 22, 2012 | 1991 Subaru Loyale

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I have a 1991 ford explorer 4.0L Eddie Bauer edition. The idle revs to 2000 rpm's and then will drop to no less then 1200 rpm's. If I give it the gas it dies whether I'm in gear or not but when I...

There are several problems and they are all related. Check plugs if they a white with gray ash buildup. Gap .054

1. Fuel pressure regulator, if it is ruptured fuel will be vacuumed straight into the the intake causing idle surge also in causes temperature fluctuation and poor performance. It will also cause lean running condition.
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3. Spark Plugs- Do not use Platinum plugs they run hotter than standard plugs!
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5. Preventive maintenance is the key change your fuel filter at recommended intervals.

I have a 94 Explorer, it run very poorly after changing these items it runs great, restored power, idles great and great mileage again and finally no more temperature fluctuation.

Nov 05, 2010 | 1991 Ford Explorer

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I have a 91 ford explorer 4.0 when engine is warm it wont go over 3000 rpm

Check for codes. Check Throttle Position Sensor values. Also check 02 sensors,coils and fuel pressure.

Mar 10, 2010 | 1991 Ford Explorer

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Have 96 explorer that will sputter and not always start for about a half an hour if it sits for a short time

This is a classic fuel pump issue. When it doesn't start spray some brake cleaner into the throttle body. If it starts then the fuel pump is weak.

Jan 04, 2010 | 1996 Ford Explorer

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there is a short in that wire somewhere and u will have to trace it and look for cracks or frays

Jun 06, 2009 | 1991 Ford Explorer

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Replace the fuel pump relay, it is not uncommon for them to get stuck in the "on" position. The relay is located on the front right inner fender panel.

May 13, 2009 | 1991 Ford Explorer

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Fuel pump wont quit

fuse panel located in the engine compartment near the battery.


Please take a moment to rate this solution.. thanks

Jan 22, 2009 | 1991 Ford Explorer

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first check the fuel pump relay under the hood on the drivers side and if it is good it could very possible be the fuel pump

Jan 12, 2009 | 1991 Ford Explorer

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