99 dodge avenger goes into d/r but will not change, is the modulating val. bad?

Question

99 dodge avenger goes into d/r but will not change, is the modulating val. bad?

Answer 1

its just went int limp mode this happens anytime a problem is detected with it to  protect the transmission from further damage ,but a shop will have to diagnose it,anyone who has a transmission scanner can read it and pull the code from it and find out why it did this,those was designed to do that though to keep from doing damage to the transmission its like a fail safe, any good transmission shop can do this it doesn't have to be a dealer,good luck

Answer 2

Your transaxle is in "limp in" mode, due to a fault detected by the TCM (transmission control Module. Have the codes extracted and diagnosed, without knowing the code, you have too many possibilities to describe. Any full service shop should be able to scan the TCM for codes.

The 41TE has no modulator valve, vacuum sensing valve or throttle pressure adjustment.

http://www.allpar.com/fix/trans.html