Thread: Really.... laggin, now over heating, and tach reading 20 mph higher than actual speed

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  1. #1 Re: Really.... laggin, now over heating, and tach reading 20 mph higher than actual s 
    GT Level Member Shiftingshaddow's Avatar
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    i'm just guessing you have either 1 big problem or several little problems. my first guess was your cluster but as i read more you have real engine codes.

    maybe check your vacuum hoses. when you have the loss of power and the cruise not working it may be a vacuum issue. those vacuums cause a lot of fits.

    maybe a bad pcm? its the car's computer. this isn't as bad as it sounds. they are easy to change.

    sounds to me like an electrical issue somewhere, though.
    2001 GTP Special Edition
    ZZP DP with Cat, Open Cone Intake, ZZP 1.0 PCM, 3.4 pulley, AL 104s, Rocker Panel Delete.....
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  2. #2 Re: Really.... laggin, now over heating, and tach reading 20 mph higher than actual s 
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    I don’t know if this helps.
    Is 'Reduced Engine Power' the same as "Limp Mode"??
    I don't know if the '08 GP transmissions have a Transmission Control Module(TCM) or "Input/Output Sensors" also called "Speed Sensors(not the ABS Speed Sensors)".
    My '00 Dodge Intrepid had them.
    When the input sensor goes bad, the car will only drive in 2nd gear("Limp Mode").
    When the output sensor goes, the speedometer will not work.
    I tried doing a search for a TCM and I/O Sensors for an ’08 GP.
    The only thing that came back were speed sensors for ABS.
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