Question about 1993 Ford Crown Victoria

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93 crown vic police interceptor a shutter when accelorating

The car is and well maintained not abuse, the sounds of shuttering and vibration seems to come from the rear end. it seems to make the noise when under load. the noise also seems to be when it shifts. many techs looked at it with a range solutions by throwing big parts at it.
guessing isn't the ansewer. please note that it is intermitten...hope you can help, someone must of had this problem before....thx in advance!

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  • colortecpdi Mar 12, 2009

    i put lucas in the rear end changed 2 muffler clamps and the tranny

    looks good light red with no bunning smell.

  • colortecpdi Mar 13, 2009

    no play in the u-joint, but the rear end play is very little and seems


  • colortecpdi Mar 13, 2009

    today i talked to a very good police car tech and he is puzzled, he thinks i should add that ford anti-slip conditioner to the rear end..

    tomorrow i talk to one of the most experence taxi tech we have in

    the area, he has always pin pointed the problem. lets see if this

    will stump him...

  • colortecpdi Mar 16, 2009

    michman i will see this fri or sat, because he was very busy last sat the 14th..

  • colortecpdi Mar 20, 2009

    well michman, talk to 2 really top techs both said the same thing today its the lock-up in the torconvorter. the fix is a complete flush of the tranny, drain the converter and change the filter. we will be using a flush machine also 20qrts should be enough. we will also add dr. tranny additive.



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Michman, GOOD NEWS its fixed. the complete flush 25qrts till the machine stated 100% clean plus the additive dr. tranny. i put the car through a few temp cycles before i wrote back. the tranny pan was super clean very very little black residue on the magnet well within specs. the hydraulic power in the tranny is great the car just jumps to speed just like it was when new. WORD OF ADVICE TO ALL ALWAYS USE YOUR GUT AND YOUR POCKET BOOK AND ALWAYS FIND PEOPLE THAT HAVE EXPERIENCE IN THE PROBLEM. REMEMBER YOUR NOT ALONE GUESSING IS NOT PROFESSIONAL AND TOOOO EXPENSIVE.. thx all

Posted on Apr 02, 2009

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Check the gear lube in the rear end and tranny fluid also check the exhaust to make sure it is not rubbing under the car

Posted on Mar 12, 2009

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  • edgar walker
    edgar walker Mar 12, 2009

    if you have done all this check the play in the universal joint

  • edgar walker
    edgar walker Mar 13, 2009

    I am sorry I was not able to help you out on this. but evenually you will find it and once you do let me know what it was thank you michiganman

  • edgar walker
    edgar walker Mar 14, 2009

    please let me know what the taxi tech finds thank you michiganman

  • edgar walker
    edgar walker Mar 17, 2009

    thanks for keeping me informed will wait for your reply to let me know what he says I am very curious now myself to know what it could be



  • edgar walker
    edgar walker Mar 20, 2009

    thanks very much for letting me know and if I am out there on the road some day don't pull michiganman over in your police cruiser :)

    Take care




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