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Motorsurges under accelaration ford f150 1991 4.9l

Motor idels fine but cuts out as soon as you give it any gas

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I have recently had an issue that sounds real similar. i took it to the ford house and it ended up being the fuel pump was going bad. it only had 14 pounds of pressure. replaced the fuel pump and it ran 100 % better

Posted on Feb 11, 2012

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Posted on Jan 02, 2017

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SOURCE: 1991 ford f150

our idle air control is lazy the round sensor with 2 wire that goes on it it on the air intake try clean the throttle body with a good air intake cleaner hope it help FIXYA OUR POST THANKS PIERRE

Posted on Jul 06, 2008

fastboyz
  • 674 Answers

SOURCE: 2001 Ford F150, fan keeps running when truck is cut off.

sound to me that you fan relay is sticking your owners manual should show you which one it is .
if you need more info let me know
later paul

Posted on Oct 26, 2008

  • 6 Answers

SOURCE: 1997 ford 150 will not idel

It could be a idelpositioning sensor, or throttle body sensor.

Posted on Mar 06, 2009

  • 6 Answers

SOURCE: where is the fuse for the wiper motor on my 1991

check on the driverside of the dash under the steering wheel

Posted on Jul 27, 2010

  • 12 Answers

SOURCE: some times my 1984 ford f150 idels fine when its i...

In general, yes. This is a carb tuning issue. Another possibility is a vacuum leak somewhere, but most likely, it's a carb issue. You'll typically see your rpm drop a bit when you put it in gear, but that it sometimes stalls out points to a carb issue.

Posted on Nov 10, 2010

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