Question about 1991 Ford Explorer

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My 1991 ford explorerc xlt idles up and down

My 1991 ford explorerc xlt idles up and down when started and seems to flood a bet

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Check 02 sensors

Posted on Nov 30, 2016

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Check for vacume leaks and fix all that you find and if still does it check for codes...Could be several things causing this Mass Air sensor , Idle air control ......Most likely vac leaks or mass air .....Make sure air filter is clean

Posted on Nov 19, 2009

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Ford bantam1.6i xlt rocam 2006 .the idling does not stay level it goes up and down


If the battery has just been replaced or discharged this could be normal.

With a battery disconnect the learned calibration of the cars computers are reset to factory settings including idle,

The car needs to relearn the idle and running settings. It can take several minutes and driving for this to occur. The car will in many cases want to stall during this learning cycle.

Note this problem usually will only occur during battery replacement or discharge.

If not associated with a battery disconnect then borrow an OBDII scanner and read the codes. If the car is derivable take it to your friendly auto parts store for a complementary scan tool code readout. The computer information will lead you to the likely sensor culprit.

Hope this helps?

Feb 27, 2015 | 2006 Ford Bantam 1.6i

1 Answer

Fuel engine stops then start up in 1 min


You probably have an electronic ignition system to go with those fuel injectors. It sounds like it runs just long enough to empty the fuel out of the injectors, which means there might be a vacuum problem. I'm a carburetor person myself. Are you sure it sound like it NEEDS gas or could it be flooding?

Mar 29, 2014 | 1991 Ford F150

1 Answer

1991 Ford F150 xlt Lariat 5.0 engine Fuel pump


Had a problem like this before and it was the computer..But you could faintly smell something like burnt wires..The computer should be down by the kick panel on the driverside..See if you smell anything on that side

Sep 08, 2011 | 1991 Ford F150

1 Answer

Front Differential on a 91 Ranger


your local salvage yard it your best bet.

Dec 27, 2009 | 1991 Ford Ranger Supercab

1 Answer

1997 Ford Explorer XLT Engine Humming


Replace "idle speed motor" (also known as idle air contrl valve).

Apr 29, 2009 | 1997 Ford Explorer AWD

1 Answer

1991 pontiac trans am will start and idle but after 25-2800 rpm'


how about highway driving will it cruse at highway speeds and if you were to step down on it does it bog down ? and does it still have the cats on it ? just a thought..

Apr 28, 2009 | 1991 Pontiac Firebird

1 Answer

Will not drop down from fast idle when first started


It sounds like an automatic choke system. Let it warm up for 5 minutes and then give it gas up to 2000rpm and release.

Nov 19, 2008 | 2007 Ford E-150 XLT Wagon

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