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Hard downshifting PT Cruiser

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  • Hard downshifting PT Cruiser

    My wife's 2003 PT Cruiser 100K miles started downshifting real hard. Upshifting is normal. It was low on fluid so I topped it off. The fluid did not look or smell burned. She said it is better, but still doing it. Will changing fluid and filter help? Additives?

    Thanks for any help,
    Marty

  • #2
    The wifes sister had that issue..Her's was an 07 though.. She had the TCM re-flashed and it straightened out the shifts..don't know if 03 has the same tech..
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    • #3
      Originally posted by ~~Mutt~~ View Post
      The wifes sister had that issue..Her's was an 07 though.. She had the TCM re-flashed and it straightened out the shifts..don't know if 03 has the same tech..
      Thanks for the info.

      Is that something I can do at home?

      Marty

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      • #4
        Do you have the specialized computer tools that the dealer has to reflash your computer? Generally, the charge isn't that high (75 bucks maybe) to flash the control module. Does the car show any codes? The 2003 has the capability to show you any code set using the key flip method.....which is on/off....on/off....and lastly on and leave the key in the on position. IIRC, any codes will show up in your speedometer window. If it shows any codes, you can do a google search on what the codes are. Also, when was the last time you've done a fluid and filter change on the trans? And welcome to the site!

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        • #5
          Pull codes with the key if you can, then pull the positive battery cable and ground it for a couple minutes to re set the ECM and see if that cures it.

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          • #6
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