2013 auto jk stalling at idle & stuck in low gear - Jeep Wrangler Forum
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Old 12-03-2019, 06:00 PM
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2013 auto jk stalling at idle & stuck in low gear

2013 jk sport 4 door

Parts replaced:
ECM In engine bay
Crankshaft position sensor on top of engine rear passenger side (it had a code for this)
Wiring harness that connects into ecm and leads to o2 sensors, air flow sensor, alternator etc
O2 sensor (NTK 23162) for bank 1 sensor 2 (it was showing code for this)

Current codes:
P0157 o2 sensor circuit low volt bank 2 sensor 2 (this showed up just now after replacing bank 1 sensor 2 o2 sensor)
P2098 post catalyst fuel trim system too lean bank 2
P0501 vehicle speed sensor a range/ performance

I’ve had tons of random codes including coolant codes and others in the past that has lead me to replacing the crankshaft position sensor, the and an o2 sensor, replaced those, nothing. Decided to replace wiring harness, no help.

Symptoms

Starts up and idles at 1,000 rpm then after 30-45 seconds drops slowly to around 500 rpm. From there while idling it will occasionally cut power then resume idling or cut power causing it to stall out.

Underway the jeep will run, but may stall out if you come to a stop or in between gear change (park to reverse, park to drive, drive to reverse etc.) this is an automatic.
Just recently I replaced an o2 sensor on bank 2 sensor 2. Nothing changed the stalling. I was told I have to use the NTK part as others are not compatible? I swapped out again for the NTK part and now not only has the issue not been resolved, I am now stuck in low gear with the slap selector from right to left unresponsive. My thought for the stuck in low gear is that when pulling on the harness clips to replace the o2 sensor I may have pulled the harness out of the trans, the big round 15 or so pin connector that twists in. I went in today and unplugged this and plugged it back in and locked it back in place....still stuck in low gear.

So I have two issues. Stuck in low gear, and occasional loss of power sometimes causing it to stall while idling

Any insight would be awesome. I’m located on a tiny Caribbean island so it’s up to me to fix this issue.

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