Your model should be equipped with a throttle pressure cable and if all the gears are late in up shifting, most probably the cable is adjusted too short.
If the shifting is erratic and sometimes seems good, the throttle position sensor can cause it to shift erratically.
Another possible cause would be the speed sensor. Thsi would happen if the speedometer is not functioning or functioning incorrectly.
Do you have the Check Engine Light showing or D4 light blinking while driving?
Sunday, June 14th, 2009 AT 11:23 AM