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Reset ignition timing results in smoother shifting automatic

2742 Views 0 Replies 1 Participant Last post by  kksport
My 2000 automatic XE King Cab always shifted a little hard from 1st to
2nd. I replaced the filter & fluid twice, but that never helped the problem.

Recently, after downloading PDF copies of the factory repair manuals, I checked and reset the timing according to factory procedures.

The timing was retarded 4 degrees.

After resetting the timing, it seems to shift a little smoother. I don't know the correlation of the engine timing and shifting harshness, but the throttle position sensor can be the cause of hard shifting, but I never had a check engine light on.

Hopefully, it won't go back to shifting like it did.
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