Question about 1993 Ford F150 SuperCab

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No data from ecm but i can get codes from it on my 1993 ford f150 . The truck idles up and down after warmed up. I smoked 2 times now no problem found. New iac / tps / cts / afs I put a new ecm already

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  • toneman2121
    toneman2121 May 12, 2010

    check vacuum with a vacuum gauge. should be between 17 and 22 Hg. check when cold to avoid fluctuation when reading

  • yadayada
    yadayada May 12, 2010

    this is a common problem on this year, have u vcleaned the IAC valve and throttle body?

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  • 15 Answers

Sounds like a vacuum leak still, check egr and also could be possible intake leak.
Spray bottle with water is best, and will run even more rough or stall when you found the leak.

Posted on May 12, 2010

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Posted on Jan 02, 2017

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If no comunication with the escanner ,
1 of the problem can be a bad ECM.
I have replaced lots of them for this problem.
2 can be a bad MAP sensor. or TPS sensor.
You can try to get manual codes fro this truck. Is possible OK.

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