Question about 1989 Ford F 150

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When Accelorating the engine chugs and acts as if it's starving

I've changed the plugs, wires, distributor cap, rotor and upstream O2 sensor. The Egr value is giving a bad reading, but I just can't pin down the problem. I thought about removing the Cat., but don't know if that will fix anything.

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  • kmoa82 Jan 26, 2009

    It acts like she's flooded or something and hesitates.
    I down have a OBD I tester, but I the ohm shows too much reistance.


  • kmoa82 Jan 26, 2009

    She also smells like she's running too rich. After clearing codes (disconnecting Neutral ), the check engine light on start up ( a few seconds delay). I can't find anyone with a tester old enough to get the codes



  • Anonymous Feb 03, 2009

    i have a ford f150 1898 i chug when i excelorate or when i reduce my speed to turn and then try speeding up again

    off my tranny at the top by the moder i have a hold and in side the hold there is 2 prongs but theer is no cord going to it ... when i bought the truck last year it dident have it .. anyone know what go;s there

  • yadayada
    yadayada May 11, 2010

    U don't need a tester u can get the CEL or an analog ohmeter to flash them at u by shorting the correct terminals of the self test connect, also u can p[ick up a used Ford Rotunda Super Star tester on ebay cheap. Refer to your service manual for the manual self test procedure.

  • yadayada
    yadayada May 11, 2010

    what do u mean by it chugs? how is the fuel pressure? what code are u getting? 31, 32?

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ASE mechanic here:
Try running engine with o2 sensors removed. if runs different suspect cats, and or install vacuum pump on egr, if egr is ok then motor rpm shall decrease with more vacuum if egr is not working there would be no affect on engine rpm, Keep me posted

Posted on Jan 26, 2009

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