I just had a similar situation about a month ago i realized i had no four wheel drive anymore then the transmission would not engage when i almost came to a stop to turn into a driveway i selected 1st gear manually and it engaged and drove forward. artier work i drove home and the same thing happen a couple more times not every time though so i scanned the OBDII system doing a health report and came up with 2 codes the first was number 3 pressure sensor for the trany the second was the differential temp sens. replaced both and the accompanying fluids cleared the codes drove it for a week about 300 miles re scanned it and everything was perfect. then 2 days ago as i was driving home the VTM - 4 light came on and the check engine light came on so i stopped and turned the ignition off for about 30 seconds re started and the check engine light came back on right away but the VTM -4 light was off when i reached about 30 MPH the VTM-4 came back on and both stayed on until i got home and turn the ignition off. in the morning when i started it up again the same thing happen again just the check engine on until i hit about 30 MPH then both again
scanned it again and was surprised with what i found the code was 1491 EGR valve lift insufficient detected witch i was expecting from reading posts on this thread and 77-01 Power train system failure the second code made me worried since i recently started hearing a growling sound coming from the right rear of the car i was thinking it was a wheel bearing because when you swerve left the sound remains but when you swerve right the right rear wheel is partially unloaded and sound decreases indicating a wheel bearing on the right but now I am actually starting to get concerned with the rear end. i have cleared the codes and started the car drove it about 200 yards to park it and there were no lights that came on i engaged the VTM-4 system and disengaged it still no lights moving the car a short distance with it engaged.
reading the factory service manual i under stand the EGR might through a code only under certain situations but still needs to be addressed but the power train failure is the concerning one im going to take it for a test drive to see if that will make it through the same codes again but im wondering if anyone has experienced this set of problems before?
the pilot is a 2003 with 203500 miles on it i maintain it properly changing the fluids regularly and repairing any problems that occur promptly .
any input would be helpful thanks
scanned it again and was surprised with what i found the code was 1491 EGR valve lift insufficient detected witch i was expecting from reading posts on this thread and 77-01 Power train system failure the second code made me worried since i recently started hearing a growling sound coming from the right rear of the car i was thinking it was a wheel bearing because when you swerve left the sound remains but when you swerve right the right rear wheel is partially unloaded and sound decreases indicating a wheel bearing on the right but now I am actually starting to get concerned with the rear end. i have cleared the codes and started the car drove it about 200 yards to park it and there were no lights that came on i engaged the VTM-4 system and disengaged it still no lights moving the car a short distance with it engaged.
reading the factory service manual i under stand the EGR might through a code only under certain situations but still needs to be addressed but the power train failure is the concerning one im going to take it for a test drive to see if that will make it through the same codes again but im wondering if anyone has experienced this set of problems before?
the pilot is a 2003 with 203500 miles on it i maintain it properly changing the fluids regularly and repairing any problems that occur promptly .
any input would be helpful thanks