1995 Plymouth Voyager would not shjift

ED MARSH

MEMBER
1995 PLYMOUTH VOYAGER
6 CYL
FWD
AUTOMATIC
157,000 MILES

My 1995 graznd voyager would not shift out of low. I was on a trip stopped to get gas and when I took off it would not shift never had a problem before. I did the usual and checked the fluid but it was ok. It was late I did not no what else to do so I parked for the night when I got up the next morning went to see about the van I took off to go to thew parts store down the street to see if they had a book on my van low and behold it was shifting normal dont want that to happen again any ideas thanks ed marsh

Saturday, February 27th, 2010 AT 4:13 AM

1 Reply

CARADIODOC

MECHANIC
34,331 POSTS

When it doesn't shift, it's in second gear. That's "limp-in" mode when the transmission computer detects a problem. The only way to reset the computer is to turn the ignition switch off, then restart the engine.

Two things will be detected by the computer, a sensor problem and slippage in one of the clutch packs. Internal slippage usually occurs during upshifts. As soon as the computer sees the slippage, it will go back to second gear and stay there. Sensor problems can be detected before the vehicle even starts to move, which sounds like what happened to you. The good news is sensors are much less expensive than rebuilding the transmission.

Once this happens, there will be a diagnostic fault code memorized in the transmission computer. That code will tell the mechanic why it went to limp-in. You should have a mechanic read those codes soon, if possible. If the problem doesn't occur again, the code will erase automatically after about 50 engine starts, and that valuable information will be lost.

Caradiodoc

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