Automatic transmission TJ stalling in reverse

derekmac

TJ Addict
Joined
Feb 10, 2016
Messages
2,576
Location
NS, Canada
A friend has a 2003 4.0 auto TJ that has been stalling going into reverse. I cleaned the IAC (wasn't that dirty) and no change. Replace it, she said it was ok for about a week, but it started doing it again. Today it also stalled going slowly in drive.

Could it be the CPS, or a bad IAC? It starts right up after it stalls.
 
From what I've heard of this in the past, it could be either. I hate just guessing though unless there's no other option. Are there any codes? If not, the first thing I would do is thoroughly clean the IAC and see if that alleviates the symptoms. It very well may!