1990 Chrysler Transmission Problem

I have a 1990 Chrysler New Yorker, 3.3litre, 3 spd. automatic
transmission with 63,000 miles. Recently the transmission started
acting up. Sometimes when I went over a bump it would shift itself
from drive into a lower gear and would not go back into drive until I
stopped, shut off the ignition and then started the car again. A
couple of times I didn't notice it had shifted itself to low gear
until I got home and could smell a hot transmission? I had a new
tranny kit installed a month ago and my fluid levels are all good. Is
there some electrical device that regulates the tranny that could be
shorting out. Any advice is greatly appreciated.

Thanks, M. Dodd

 

1. You don't have a 3 spd if you have a 3.3. 2. You'll need to have someone
pull codes from it to see for sure what's happening. Good Luck
Larry

 

Thanks Larry: I don't any mechanical background and appreciate your
advice. My Shifter is on the steering column and shows "R", "L", "D"
and then another "D" with an O around the "D" which I assume means
Overdrive. I just assumed that meant it was a '3' speed. I take it
that "pull codes" means to locate numbers similar to a UPC code on the
tranny that tells me exactly which one is installed in my Chrysler. I
re-checked the engine and it is 3.3L.

 

No, "pull codes" means to hook a diagnostic computer to the matching
connector under the hood of the car and examine the data supplied by the
engine and transmission control computers to get an initial indication of
what's wrong. It's called "pulling codes" because the information is
transmitted as a series of numerical codes that refer to specific
operational faults.

DS

 

Wonderful, thanks for the info on "pull codes" Dan, I will get it checked.
Best regards, M. Dodd