Is the transmission actually slipping? Are the shifts normal or do they flair (RPMs jump up during the shift)?
I would check the fluid level and condition and if it is OK. I would then look at my VSS and ignition system sensors and wiring. The PCM compares the engine RPM to vehicle speed for each gear selected and if they don�t agree with the calculated values it sets a slip code. Bad inputs can trick the PCM into thinking a good tranny is slipping so check it out before condemning the tranny.
Originally posted by kevmic28: p1728 transmission slip?? What exactly does that mean?
The Input Shaft speed sensor of the Transaxle should always report the same value as Engine RPM when the Torque Converter is locked. If these values don't match up, you can get a code for the transaxle slipping.
This can be either,
Torque Converter Clutch worn out Pump Seal leaking (causing Torque Converter low pressure) Valve Body worn (causing Torque Converter low pressure) Old Tranny oil
You can try changing out the Tranny Oil and see if things improve. It may only be a short fix and hold for a short time. If so, then you are in for a rebuild.
Pete...
2004 Mercury Marauder 300A
Black Clearcoat/Dark Charcoal LEATHER
DOB 10/31/2003
DOP 1/2/2004
www.mercurymarauder.net
