Transmission...
CluelessOwner
03-18-2007, 08:46 PM
I just "unparked" my van which had been sitting for about a year. It was sitting because I had another vehicle to drive and I did not want to pay registration / insurance on two vehicles. Now that I have gotten it out of the garage I have 2 issues with it.
1) The brakes, rear, seem to be grabbing. In fact, I had to rock it back and forth to get them to release when I first got it out. When I apply the brakes with a fair amount of preasure to stop quickly, the drivers side rear locks.
2) Now to the dreaded tranny. When I stopped quickly as described above, and then I go to take off immediatly after, the tranny seems to "slip" a little before it takes hold and moves the vehicle forward. Almost like the "downshift" is slow to catch up.
History: The transmission is the 2nd one to be in this vehicle. The transmission was rebuilt at AAMCO about 5 years / 60k ago. This is a 1999 Plymouth voyager 3.0L not sure what type of transmission it it, (CluelessOwnder is the name) but the selector says P-R-N-D-3-L. the vehicle has 85k miles on it. The transmission has been serviced (flushed) once since the rebuild. The vehicle has not towed anything.
1) The brakes, rear, seem to be grabbing. In fact, I had to rock it back and forth to get them to release when I first got it out. When I apply the brakes with a fair amount of preasure to stop quickly, the drivers side rear locks.
2) Now to the dreaded tranny. When I stopped quickly as described above, and then I go to take off immediatly after, the tranny seems to "slip" a little before it takes hold and moves the vehicle forward. Almost like the "downshift" is slow to catch up.
History: The transmission is the 2nd one to be in this vehicle. The transmission was rebuilt at AAMCO about 5 years / 60k ago. This is a 1999 Plymouth voyager 3.0L not sure what type of transmission it it, (CluelessOwnder is the name) but the selector says P-R-N-D-3-L. the vehicle has 85k miles on it. The transmission has been serviced (flushed) once since the rebuild. The vehicle has not towed anything.
KManiac
03-19-2007, 12:05 AM
Well, lets see here.
The locked up brake drum (I am assuming drum in the rear 'cause disc's don't do what you described and your powertrain combination usually came with drum brakes in the rear) after sitting could indicate a leaking wheel cylinder. The brake fluid residue gets in between the shoe and drum causing them to stick when they sit. Pull the rear drums and check for leaks.
Regarding the transmission, the P-R-N-D-3-L is the electronic 4-speed automatic. With the window rolled down, you should hear a faint buzzing noise when you shift this transmission into drive. Are you sure it was slipping and not just slow to downshift? A slipping transmission will cause the engine rev up (like in neutral) between gears until it catches. A slow downshifting transmission will maintain a steady engine speed until the lower gear catches and the engine revs increase accordingly. Usually when these electronic transmissions slip, the computer locks them into "limp mode" or constant second gear. You didn't describe this condition, so I think your OK. Just continue to drive it an pay attention for any unusual transmission activity.
Let us know if you have any other questions or comments.
The locked up brake drum (I am assuming drum in the rear 'cause disc's don't do what you described and your powertrain combination usually came with drum brakes in the rear) after sitting could indicate a leaking wheel cylinder. The brake fluid residue gets in between the shoe and drum causing them to stick when they sit. Pull the rear drums and check for leaks.
Regarding the transmission, the P-R-N-D-3-L is the electronic 4-speed automatic. With the window rolled down, you should hear a faint buzzing noise when you shift this transmission into drive. Are you sure it was slipping and not just slow to downshift? A slipping transmission will cause the engine rev up (like in neutral) between gears until it catches. A slow downshifting transmission will maintain a steady engine speed until the lower gear catches and the engine revs increase accordingly. Usually when these electronic transmissions slip, the computer locks them into "limp mode" or constant second gear. You didn't describe this condition, so I think your OK. Just continue to drive it an pay attention for any unusual transmission activity.
Let us know if you have any other questions or comments.
GC1999
03-19-2007, 02:53 AM
The transmission control module might still be learning. Go to AAMCO and have them quicklearn the transmission (should be free) and check for any diagnostic codes. Why not also change the fluid just to be sure (ATF+3) as well?
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