Hello
Over the past 6 months, I've been dealing with some off & on issues with my LJ. Seems to be all centered around the transmission or the PCM.
What all started this was some weird automatic shifting & a squeal when I would come to a stop—seemed to be a relatively "common" issue(from what I read) having the squeal coming to a stop with the 42rle...but it bugs me.
I dropped the pan, changed the filter & flushed the transmission. The squeal went away for a few months but was soon followed by an 02 sensor code P0153 & hard shifting from 2 into 3rd until the engine warmed up.
The hard shifting would fix itself if I unplugged the battery and "restarted" the Jeep for a day or two.
I was about to order a new PCM from WranglerFix but figured I would change the 02 sensors out first. Crazy how the new downstream 02 sensors resolved the hard shifting (for a few weeks now) but honestly It doesn't feel 100% like it was...maybe I'm imagining it not sure.
Regardless with 4 new 02 sensors I still have the P0153 and recently the squeal has come back.
It does seem like I need a new PCM regardless, some type of electrical issue is going on with the trans but also wondering if anyone has any pointers for the squeal.
(Its not the brakes I promise)
ALSO If anyone has any pointers on any electrical connections outside the trans that may be damaged or shorted that would also be greatly appreciated!
Over the past 6 months, I've been dealing with some off & on issues with my LJ. Seems to be all centered around the transmission or the PCM.
What all started this was some weird automatic shifting & a squeal when I would come to a stop—seemed to be a relatively "common" issue(from what I read) having the squeal coming to a stop with the 42rle...but it bugs me.
I dropped the pan, changed the filter & flushed the transmission. The squeal went away for a few months but was soon followed by an 02 sensor code P0153 & hard shifting from 2 into 3rd until the engine warmed up.
The hard shifting would fix itself if I unplugged the battery and "restarted" the Jeep for a day or two.
I was about to order a new PCM from WranglerFix but figured I would change the 02 sensors out first. Crazy how the new downstream 02 sensors resolved the hard shifting (for a few weeks now) but honestly It doesn't feel 100% like it was...maybe I'm imagining it not sure.
Regardless with 4 new 02 sensors I still have the P0153 and recently the squeal has come back.
It does seem like I need a new PCM regardless, some type of electrical issue is going on with the trans but also wondering if anyone has any pointers for the squeal.
(Its not the brakes I promise)
ALSO If anyone has any pointers on any electrical connections outside the trans that may be damaged or shorted that would also be greatly appreciated!
