We have a 96 Grand Caravan Dodge, 3.3ltr and it works absolutely fine
until it gets warmed up like around 8-10 miles or 10 minutes of idle.
I shifts up and down perfectly until then. Can you please give us
some suggestions as to what may be causing this? Could it be something
simple? We took it to aamco and they said it needs a complete rebuild
and expect to spend around $2000. I find this very hard to believe
after doing some internet searches. However, I would like to know
what steps I should do first? I have several ideas in mind, but would
like to hear from someone who as already been here.
Do you see and strange fluctuations on the tach when this happens? If yes, then it could be a bad engine speed sensor that is confusing the transmission. Mine went into limp mode and the tach went crazy. New engine speed sensor for $28 fixed my 1999 GC. What trouble codes are showing up?
Get a GOOD tech who knows more about actually troubleshooting the unit than scamming you for a rebuild to run a complete diagnostic. Ask him/her to give you the readouts and post them here for second opinion if you like. But a good tech should be able to pinpoint in plain english for you the diagnostic without just repeating rebuild