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2003 Ford Taurus Question: The engine will not rev to more than 4000 rpm and at that rpm it shudders.

 

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jlslife, 3.0L V6, Evanston, WY, February 11, 2013, 23:49
 Rookie

I first noticed that when using passing gear it would jump in and out of passing gear. I then noticed that in park or neutral I could not get the engine to rev to more than 4000 rpm. I have changed the spark plugs and the fuel filter to no effect. I have no idea where to go from here. I have been told that the rev limiter might be bad, but I can't find any info on that, and I am more inclined to think it might be the PCM? I had the codes checked and it is not showing any. The check engine light is not on. Any help would be greatly appreciated.

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  • Answer #1

    Greg's Orange Auto (13671 Answers) , Orange, CA - (714) 361-9386
    globalhelper February 12, 2013, 06:36
     Master

    have a mech drive car with a scanner attached so he can read live data and diag problem.also have him scan poss trans codes

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    jlslife, February 13, 2013, 10:45
     Rookie

    Ok I took it to the shop and had a mechanic drive it and it was showing no trouble codes. He said I needed a complete tune-up and to change the fuel filter. I have already do that?

    Any more thoughts please?

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    globalhelper, February 13, 2013, 11:57
     Master

    what did live data show if there were not codes

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    jlslife, February 13, 2013, 19:35
     Rookie

    I think he only had a code reader with him and not a scanner :(

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    globalhelper, February 13, 2013, 19:41
     Master

    try another mech the info would be priceless

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