Question about 1991 Ford F150

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1991 Ford F150 has low idle and shuts off when staying still. Have to jump the truck everytime

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 7 Answers

SOURCE: High Idle

get a code reader like the Actron CP9015 Code Scanner, for 20 dollars and follow the directions. count the flashes and post the code if you need further help

Posted on Nov 28, 2008

  • 255 Answers

SOURCE: Ford 1995 F150 Truck. Turn ignition key off but Truck still runs

ignition switch electrical portoin above brake pedal on steering column

shack

Posted on Apr 14, 2009

  • 295 Answers

SOURCE: 1989 ford f150 w/ 5.0 liter..... engine light on

I would check the oil pressure of the engine. The reason is the timing chain tensioners are run with oil pressrue. I think your timing chain tensioners are leaking down when engine is getting to operating tempature . The oil is thinning down as warms up , as it should to lubercate . I would check compression and do a cylinder leak down test on all the cylinders. Then if the compression is good and the cylinder leak down is good. I would change all the timing components, ( chain, timing gears, timing chain tensioners )

Good Luck , I hope this helps.

Posted on Apr 18, 2009

emissionwiz
  • 75130 Answers

SOURCE: 1993 ford ranger won't Idle right

I am a Ford dealer Tech and this is what cures this issue most of the time.

, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Jul 01, 2009

  • 25 Answers

SOURCE: Car will not stay on after jump start.

The battery is there to start the vehicle, once running the alternator takes over and provides the power for all electrical. It sounds like your alternator went out on you. Thats is where I would start. Hope this helps

Posted on Oct 21, 2009

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1 Answer

Why should the truck shut down at a low idle or when u apply the brake to it the idle slows down an it cuts off on a 1992 ford f150


In some cases, the throttle body is dirty or the iac valve is faulty.
I would start with those two things.

Oct 11, 2012 | 1992 Ford F150 SuperCab

1 Answer

Idle adjustment 1991 ford ranger 3.0 v-6 throttle body


the first thing i\I would try is to replace the Oxygen sensor...this happened to me on my 91 F150 pickup and that cured it..

May 31, 2012 | Ford Ranger Cars & Trucks

1 Answer

1996 ford f150 tail lights wont turn off


Sounds like the brake light switch under the brake peddle change it out should be okay.under 15 bucks at the parts store

Apr 23, 2012 | 1996 Ford F150 Regular Cab

1 Answer

I just started to fix up my 1991 f150 lariat, and every time i turn the truck off and walk away it die, when i disconnect the the battery and reconnect it the fuel pump turn on and stays on, some people...


it could be the PCM , but I would check the fuel pump relay first. the relay could be sticking to make the fuel pump run all the time. as far as the dying problem you may want to check the idle air by-pass valve to make sure your idle rpm's are sufficient.

Jul 28, 2011 | 1991 Ford F150

1 Answer

1992 f150 351 motor idles good but when you give it some gas it back fires through the intake. cranks good everytime. just replace the oxygen sensor and the electrical modules


CHECK THE VACUMED ADVANCE (FLY WEIGHT) IN THE DISTRIBUTOR
THEN THE FUEL FILTER OTHER THEN THAT MAY BE TIMING CHAIN SLOPPY
AND JUMPED A TOOTH FAIRLY COMMON ON HIGH MILLAGE ENGINE

Apr 16, 2011 | 1992 Ford F150 SuperCab

1 Answer

1992 ford f150 xlt- when first started idle jumps from very low to very high repeatedly until warm. then idle is high


try un-plugging the IAC motor,then start it,if it idles low and stays there then replace the IAC motor----if no change then you may have a knock in the engine and the knock sensor is telling the computer to change the timing to compensate for spark knock due to low grade fuel,so it advances the timing back and forth due to too high of rpm then too low and the computer doesnt know how to smoothen it out that fast,but eventually does.The check engine light would usually come on in this case

Jan 23, 2010 | Ford F-150 Cars & Trucks

1 Answer

1991 F150 Interior dash and brake lights not working


you need to change out the 7.5amp fuse in the fuse panel under the dash. make sure you look up because i missed it the first time i had the same problem. the trim makes it hard to see when you have the cover off of the fuse panel.Or you have a short in your wiring or a short to power of an other curcuit. do you know what the code is for the check engine light? what engine is in it?

Apr 26, 2009 | 1991 Ford F150

1 Answer

High Idle


get a code reader like the Actron CP9015 Code Scanner, for 20 dollars and follow the directions. count the flashes and post the code if you need further help

Nov 17, 2008 | 1991 Ford F150

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