Question about Ford F-150

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Ford F-150 5.4 triton auto, plugs and wires changed recently and checked, ran great since changed then recently on longer trip when I stopped at first light it started running rough and like previous post, once it reaches about 2 too 2500 rpm smooths right out

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  • Ford Master
  • 373 Answers

Hmmm. And no check engine light? Maybe it
What year is your F150? I had a similar problem on my 1999, and it was a coil. It took a while for an engine to pop up. But you replaced "wires", so you have an older truck w/o COP type coils?

Posted on Mar 28, 2015

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

SOURCE: 1999 pontiac grand prix . will not run

If wiggling the wires cured the code, then one of the wires is broken inside the insulation. Pull on each wire one at a time. look for the colored insulation to stretch, this will be the broken wire. For the other car that wont rev up, this is a common when the catalytic concverter is plugged up. This will also cause MAF codes, and in turn, TRAC OFF light.
See http://www.greatautohelp.com

Posted on Oct 17, 2008

  • 1 Answer

SOURCE: 1992 mazda 929 running rough

TRY CHANGING UR OIL, SPARK PLUGS, FUEL FILTER AND TRANSMISSION FILTER.

Posted on Nov 27, 2008

  • 43 Answers

SOURCE: 1993 Ford Explorer idles rough when engine is warm

try changing distributor cap & coil

Posted on Jan 06, 2009

  • 3600 Answers

SOURCE: 2001 ford escort, rough idle, runs smooth while

Your IAC may be defective, first check the canister purge valve by removing the large hose off the charcoal canster and plugging the hose with a bolt or something you can fit into it, then try it also check PCV valve and see if it's bad. there are more things to check like fuel filter fuel pump and or fuel strainer if fuel tank but would need to have more information to help.

Posted on Aug 28, 2009

  • 37 Answers

SOURCE: Engine Runs Rough at Idle

go to auto zone,its free ck.throtle senser

Posted on Feb 19, 2012

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