Chrysler LeBarron not down shifting?

  • Thread starter Thread starter Eryn V
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Eryn V

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I have a 1994 Chysler LeBarron. I just has a lot of work done on it they put in all new belts and a new water pump but for some reason its not down shifting. I am affraid it will over heat. What is causing this and how can I fix it?
 
Considering it is 14 years old ,, has the trans ever been replaced? If not , that would be your next thing to do. Most Chrysler's of that age have had at least 1 trans done. Time to decide if it is worth fixing
 
As there were two different transaxles used for the vehicle, depending on what engine you have, it could be any number of things.
If yours is a 4speed OD, 41TE, the TCM (Transaxle Control Module) could be directing the transaxle into "limp-in " mode, which allows only P, N, R, and 2nd gear operation, due to a fault code being detected. This can be a result of an electrical or mechanical issue, and a fault code will be stored in the TCM's memory. Unfortunately the TCM has to be scanned with a diagnostic tool to retrieve the code. Most common electrical sensor issue is either the input or output speed sensors.
As for the 3 speed 31TH, many problems associated with poor down shifting can be caused by sticky governor valves, mainly caused by internal wear, damage to bearings, bushings, debris from wear. I would verify proper throttle pressure adjustment, and correct assembly of the linkage (a missing return spring on the throttle lever linkage can cause delayed, erratic or no downshift).
 
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