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  1. Re: 1998 XJ; Slow/Underpowered Acceleration, Shift Problems, Error Codes P0700 & P072

    No but could have something to do with being underpowered due to the honeycomb coming loose and plugging the outlet. Also slow shifting could be caused by the throttle being depressed more than usual
  2. Re: 1998 XJ; Slow/Underpowered Acceleration, Shift Problems, Error Codes P0700 & P072

    When was the last time you changed the fluid and how many miles on it?
  3. Re: 1998 XJ; Slow/Underpowered Acceleration, Shift Problems, Error Codes P0700 & P072

    So that got rid of all the codes and CEL?
  4. Re: 1998 XJ; Slow/Underpowered Acceleration, Shift Problems, Error Codes P0700 & P072

    You might want to take a look at the throttle position sensor. If it is a little dodgy it can cause late shifting
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