Fluid has been changed within the last 3000 miles and 15,000 miles prior to that. I cannot tell the difference between the fluid in the trans and fresh mercon. The fluid level is correct.
Looking at the possible causes in the previous reply:
- PCM damaged - The PCM is commanding the transmission to shift but, the shifts (1-2 and 2-3) are not occurring (unless I let up on the accelerator). Could there still be a problem with the PCM?
- VPWR circuit open or shorted - Once again, no DTC�s indicating an electrical problem. Could there still be a problem with VPWR?
- Solenoid circuit open or shorted to VPWR or GND - Again, no DTC�s indicating an electrical problem with the solenoids and, the solenoids appear to be operating properly when their action is monitored with Autotap while driving the car.
- Damaged solenoid - See above
- Internal transmission - Since the above have been eliminated (at least in my mind), does anyone have any idea what may be wrong with the transmission that affects both the 1-2 shift and the 2-3 shift in the manner described in my initial post?
