1995 Chrysler Cirrus Auto Trans Control Module

chrysler
cirrus
sensors
transmissions

#1

This car has had problems with the auto trans control module since new. Sometimes the problems are infrequent. Sometimes they are frequent. At 125,000 miles, all the mechanics agreed I needed a remanufactured transmission. After installing it, the control module was still frequently kicking the trans into “limp home” mode (2nd gear only). The problem was solved temporarily when they installed a different control module with that remanufactured transmission.



Now that remanufactured transmission has about 50,000 miles on it, and the problem of kicking into “limp home” is behaving a little differently. In the morning when everything is cold, the trans kicks into “limp home” immediately. After driving three to five miles, I can switch off the ignition, re-crank the car, and the trans performs flawlessly the rest of the day. I’ve also noticed that while the trans is cold and acting up, the speedometer needle is also bouncing up and down. When the trans warms up and starts working, the speedometer also works properly.



Do you think this is more likely to be caused by one of the speed sensors inside the trans? Or is it just another bad transmission control module?


#2

This is impossible to diagnose over the internet. Since you’ve been having these issues since the car was new, why didn’t you resolve them while still under warranty? With no mechanics able to make a definite diagnosis and repair I’d be extremely reluctant to pour much more money into this car. Sounds like a prime candidate for cash for clunkers…


#3

It was repaired under warranty! Then re-appeared after the warranty expired. I was hoping to hear from other Chrysler owners who have had these transmission problems. I don’t think my car was an isolated lemon. And the problem doesn’t interfere with using the car. Just an annoying inconvenience so far. This Chrysler has been an otherwise great car.


#4

Have you considered upgrading from an automatic to a stick shift?

Just kidding.

Take a look at allpar.com it’s a Chrysler only site. Someone there should be able to answer your question.


#5

With the speedo acting up, thats an indicator of an output speed sensor issue. Have the speed sensors been replaced??

transman


#6

I was hoping that the speed sensor was the problem and that it would be easy to replace. But the manual I found online indicates that these speed sensors are inside the transmission. Don’t know if the car is worth doing more internal transmission repairs.


#7

No, No… you have a 604 Chrysler transmission. Speed sensors are on the outside of the trans. Heres a pic of the trans:
See where the dipstick tube is? At the bottom of the dipstick tube and to the right is the input (Turbine) speed sensor. Now directly to the right of the input sensor at the back of the trans is the output speed sensor. Change both of these sensors. They cost less than $50 for both of them. A 1" socket is all it takes. If these have never been changed and you are experiencing limp mode and speedo issues, the output speed sensor and/or its wiring is most likely the problem. You can pay a trans shop to do a scan on the TCM for codes to be sure. But the speedo runs off of the output speed sensor. I ALWAYS recommend changing BOTH sensors because they work together to shift the transmission.

transman


#8

Now that’s good news! Exactly what I hoped to find. Thanks, Transman.


#9

Didn’t work did it? My 95 Cirrus just started doing the dance as well! I’m guessing it’s going to be the TCM. At least I’m hoping!