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Old 11-23-2016, 09:23 AM
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RPM's drop or stalls when put in gear on a cold start

I have a 2012 JKU Sahara (actually Altitude, same thing) automatic with 75K miles.

When it is cold outside (<40 degrees), and I start it in the morning, usually with the remote start, I let it idle for a few minutes, and it sounds good, no problems.

But then I throw it in reverse to back down the driveway and either the RPM's drop for a few seconds and it "shudders" then goes back to normal, or on occasion it will actually stall out. When it stalls, I put it back in park and it starts right back up and then there is no problem the rest of the day.

It only does this when started cold, like from sitting overnight.

Ideas on what I should look at?

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Old 11-23-2016, 12:47 PM   #2
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It could be the plugs, a vacuum problem or the throttle body has deposits. It could also be a bad sensor. Any of these could cause a low or rough idle when shifting into drive or reverse, or a stall. I would check for codes to see if there's a problem with a component. Most auto parts stores will check for codes at no charge if you prefer to save a trip to the dealer. Worst case scenario there could be some type of trans. problem but I think it's more likely to be one of the issues I previously mentioned. Good luck.

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Old 02-03-2017, 07:53 AM   #3
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Same problem on my 13 Rubicon, auto trans. Spent past weekend in PA. In the morning go to start the jeep and get out of garage. Let it warm up for several minutes. Put it in reverse and it would stall. Only happens when temp is below 20F. Ideas?
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Old 02-03-2017, 08:58 AM   #4
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I've heard some say that they put the TC in Neutral but put the Transmission in Gear to see if that makes a difference. Not sure what that proves - BUT - if it doesn't do it when those steps are done - might help troubleshoot even more.
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Old 02-03-2017, 07:38 PM   #5
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Just had to replace the Torque Converter Solenoid on my 2013 with 72000 miles. mine was jerking bad on take off, try backing into parking spot in the evening and see if it does it in the morning in drive. Not that this will prove any thing but in forward it can up shift and may not stall out.
The solenoid is 39 bucks and is pretty easy to change out.
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Old 02-04-2017, 12:52 AM   #6
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Same problem on my 13 Rubicon, auto trans. Spent past weekend in PA. In the morning go to start the jeep and get out of garage. Let it warm up for several minutes. Put it in reverse and it would stall. Only happens when temp is below 20F. Ideas?


I have a 2013 JKU auto with 42k and mine started doing the exact same thing when I recently moved to Colorado. It only does it when it's cold and once it's warmed up the issue goes away. I've checked everything I can think of and have no clue what's causing it.
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Old 02-05-2017, 04:35 PM
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Just had to replace the Torque Converter Solenoid on my 2013 with 72000 miles. mine was jerking bad on take off, try backing into parking spot in the evening and see if it does it in the morning in drive. Not that this will prove any thing but in forward it can up shift and may not stall out.
The solenoid is 39 bucks and is pretty easy to change out.
I tried starting out in Drive instead of Reverse, and it does the same thing, so it's not backing out that is the problem.

I also noticed that a few times, when I restart the engine, after it turns over, there is an elongated sound. Not sure how to explain it, but if you listen when you start, there are the cranks, then the engine turns over, then there is the sound when it comes up to speed, then to idle. It's that sound when it comes up to speed that abnormally lasts like 5 or 6 seconds that has happened 2 or 3 times for me. Very strange.
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Old 02-06-2017, 07:25 AM   #8
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Just had to replace the Torque Converter Solenoid on my 2013 with 72000 miles. mine was jerking bad on take off, try backing into parking spot in the evening and see if it does it in the morning in drive. Not that this will prove any thing but in forward it can up shift and may not stall out.
The solenoid is 39 bucks and is pretty easy to change out.
In PA I always pull fwd into garage, reverse in morning and it stalls.

However at home (NC), complete opposite; I pull in reverse into garage and pull out forward. In morning when I pull fwd out of garage, it does tend to lurch or grab, but doesn't stall (does hesitate).

I like the TC solenoid suggestion.
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Old 02-06-2017, 04:03 PM   #9
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I have a 2013 JKU auto with 42k and mine started doing the exact same thing when I recently moved to Colorado. It only does it when it's cold and once it's warmed up the issue goes away. I've checked everything I can think of and have no clue what's causing it.
Got a part number for that?
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Old 02-06-2017, 05:48 PM   #10
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Got a part number for that?
13 2013 Jeep Wrangler Automatic Transmission Solenoid - Transmission - Mopar - PartsGeek

link to where i purchased mine.
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Old 02-06-2017, 05:49 PM   #11
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W0133-2035143 is the part number Torque converter clutch solenoid.

hope this helps
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Old 12-01-2017, 09:23 PM   #12
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Curious to see if this improved the situation? I recently have been experiencing this same issue with my 2013 JKU. Part of me leans towards battery is getting ready to be replaced. But if it's the Torque converter clutch solenoid I would like to get it taken care of without pulling what is left of my hair.
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Old 12-04-2017, 11:50 AM   #13
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Originally Posted by chmitche View Post
Curious to see if this improved the situation? I recently have been experiencing this same issue with my 2013 JKU. Part of me leans towards battery is getting ready to be replaced. But if it's the Torque converter clutch solenoid I would like to get it taken care of without pulling what is left of my hair.
Hi chmitche,

If you decide to have any work completed at your Jeep dealership and need assistance, please feel free to reach out!

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Old 12-05-2017, 07:09 AM   #14
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Curious to see if this improved the situation? I recently have been experiencing this same issue with my 2013 JKU. Part of me leans towards battery is getting ready to be replaced. But if it's the Torque converter clutch solenoid I would like to get it taken care of without pulling what is left of my hair.
The Torque Converter Solenoid fixed mine, i have 20000 miles since replacing and have not had it happen again.
My randomly shutting off problem was solved with a bypass of the TIPM fuel pump circuit. "dodge has this kit" or you can purchase a simple jumper wire from internet that jumps from open hot fuse spot to the fuel pump fuse.
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Old 12-05-2017, 07:20 AM   #15
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Should add, my problem was on take off at 15mph the vehicle would Jerk forward almost chirp tires then again at 18mph. so my problem may not be the same as described.
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Old 12-05-2017, 09:26 AM
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My issue has not been resolved. Towards the end of the winter earlier in the year, I dropped it off at the dealership overnight so they could see it happen in the morning, and they said "it didn't happen"... and I don't have time to keep doing that. It's getting cold again here in PA and it is starting to happen again, so I will have to revisit the issue.

I do not get a check engine light and there are no codes stored, so they can't go by that. Once last week it actually stalled twice - it stalled when I put it in gear, then I restarted and it did the extended rev after it turned over, then I put it in gear again and it stalled. I started it a second time and I was able to put it in gear and go.

A friend of mine thinks it could be a bad crankshaft sensor.
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Old 12-05-2017, 01:06 PM   #17
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Hi chmitche,

If you decide to have any work completed at your Jeep dealership and need assistance, please feel free to reach out!

Kori
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What kind of service can you help with?
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Old 12-05-2017, 01:09 PM   #18
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My issue has not been resolved. Towards the end of the winter earlier in the year, I dropped it off at the dealership overnight so they could see it happen in the morning, and they said "it didn't happen"... and I don't have time to keep doing that. It's getting cold again here in PA and it is starting to happen again, so I will have to revisit the issue.

I do not get a check engine light and there are no codes stored, so they can't go by that. Once last week it actually stalled twice - it stalled when I put it in gear, then I restarted and it did the extended rev after it turned over, then I put it in gear again and it stalled. I started it a second time and I was able to put it in gear and go.

A friend of mine thinks it could be a bad crankshaft sensor.
Yeah yours sounds a bit different. Here in NC, not many cold days for me. But last week it happened again to me between 30-40F, but I also park in a garage. Upon starting and letting warm up for a min, put it into gear and it stalled. I put it back into park, started it and let it warm up for ~5 mins, then no issue other than a slight hesitation when putting into drive, but never stalled.
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Old 12-05-2017, 01:54 PM   #19
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What kind of service can you help with?
I can open a Customer Care case and have it escalated to our handling team to assist while a vehicle is in service.

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Old 12-05-2017, 05:08 PM   #20
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My issue has not been resolved. Towards the end of the winter earlier in the year, I dropped it off at the dealership overnight so they could see it happen in the morning, and they said "it didn't happen"... and I don't have time to keep doing that. It's getting cold again here in PA and it is starting to happen again, so I will have to revisit the issue.

I do not get a check engine light and there are no codes stored, so they can't go by that. Once last week it actually stalled twice - it stalled when I put it in gear, then I restarted and it did the extended rev after it turned over, then I put it in gear again and it stalled. I started it a second time and I was able to put it in gear and go.

A friend of mine thinks it could be a bad crankshaft sensor.
Hi mannaggia,

I'm sorry to hear this. If there's any additional follow up I can provide, please don't hesitate to reach out.

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Old 12-05-2017, 09:01 PM   #21
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Hi chmitche,

If you decide to have any work completed at your Jeep dealership and need assistance, please feel free to reach out!

Kori
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Good evening Kori- I reason I came to the forums first was because my dealership and service departments past treatment of myself and my JKU.

From being told a leak in a door seal was "acceptable" with a puddle of water on the front floor mats, that happened about 4 times, in case you're wondering.
To having a clearly defective leather seat on the drivers side after around 2.5years of owning it and around 29k on the jeep was told that was normal wear and tear. OR that I must have punctured the spot. When it is clearly out of the way of any possible sharp object.

While I continue to chase the water leak issue, seeing improvement with each tip I find on forums like this, I would rather figure out the issue on my time, rather than forfeiting my jeep for a day or two and be disappointed that nothing was resolved.

Unless something can be done to prove other ways I will continue to surf the forums for answers rather than get a service ticket started.

If you have any further questions please feel free to send me a private message.
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Old 12-06-2017, 10:45 AM   #22
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Good evening Kori- I reason I came to the forums first was because my dealership and service departments past treatment of myself and my JKU.

From being told a leak in a door seal was "acceptable" with a puddle of water on the front floor mats, that happened about 4 times, in case you're wondering.
To having a clearly defective leather seat on the drivers side after around 2.5years of owning it and around 29k on the jeep was told that was normal wear and tear. OR that I must have punctured the spot. When it is clearly out of the way of any possible sharp object.

While I continue to chase the water leak issue, seeing improvement with each tip I find on forums like this, I would rather figure out the issue on my time, rather than forfeiting my jeep for a day or two and be disappointed that nothing was resolved.

Unless something can be done to prove other ways I will continue to surf the forums for answers rather than get a service ticket started.

If you have any further questions please feel free to send me a private message.
-Chris
I'm very sorry to hear about your experience. If you ever decide to revisit a Jeep dealership at any point, you're more than welcome to let me know with your VIN and the dealership in a private message so we can provide follow up.

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Old 12-23-2017, 02:53 PM   #23
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JKU Sport 2013 (Automatic) 100K miles

This is my first ever Jeep! I love it and always recommend it to people when they ask what type of vehicle should they buy. When people ask me if I like my Jeep, "Hell yeah!"

Last Friday, I was backing out of a parking lot and the Jeep stalled and I couldn't put it into drive. Waited and started it back up and pulled forward to check for codes and nothing. I reversed it out of the parking spot again and it stalled a second time. Waited and started it back up and luckily the lady in the spot in front of me pulled out so I juts pulled it forward and headed to the dealership.

Dealership had no openings and I needed reliable transportation for the weekend and they were not able to get to the vehicle until the following Monday. Needless to say I had to rent($$$) a vehicle.

Dealer called me on Monday and could not duplicate the stall and no codes were found. They said spark plugs needed to be changed out and there was some oil leaking out from the engine.

Today I was getting gas and the Jeep stalled again. Try putting it into park, reverse, neutral nothing. Waited a few minutes and started it up again and was able to pull it forward and get some gas.

I did notice on the way home when I got to 15mph the Jeep seemed to lurch forward. Anyways I've already spent $100 for a diagnostic test at the dealership only to find nothing wrong, so I'm not sure where to go from here. Plus money on the spark plugs, fix the oil leak and the car rental.

Maybe I need to look at changing out the crankshaft sensor? Thoughts?? It seems this has been happening in a lot of the 2012-2013 Wrangler's from other forums I've read.
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Old 12-24-2017, 04:54 PM   #24
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This is my first ever Jeep! I love it and always recommend it to people when they ask what type of vehicle should they buy. When people ask me if I like my Jeep, "Hell yeah!"

Last Friday, I was backing out of a parking lot and the Jeep stalled and I couldn't put it into drive. Waited and started it back up and pulled forward to check for codes and nothing. I reversed it out of the parking spot again and it stalled a second time. Waited and started it back up and luckily the lady in the spot in front of me pulled out so I juts pulled it forward and headed to the dealership.

Dealership had no openings and I needed reliable transportation for the weekend and they were not able to get to the vehicle until the following Monday. Needless to say I had to rent($$$) a vehicle.

Dealer called me on Monday and could not duplicate the stall and no codes were found. They said spark plugs needed to be changed out and there was some oil leaking out from the engine.

Today I was getting gas and the Jeep stalled again. Try putting it into park, reverse, neutral nothing. Waited a few minutes and started it up again and was able to pull it forward and get some gas.

I did notice on the way home when I got to 15mph the Jeep seemed to lurch forward. Anyways I've already spent $100 for a diagnostic test at the dealership only to find nothing wrong, so I'm not sure where to go from here. Plus money on the spark plugs, fix the oil leak and the car rental.

Maybe I need to look at changing out the crankshaft sensor? Thoughts?? It seems this has been happening in a lot of the 2012-2013 Wrangler's from other forums I've read.
change it. Its easy and cheap!
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Old 12-25-2017, 01:15 AM   #25
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This is my first ever Jeep! I love it and always recommend it to people when they ask what type of vehicle should they buy. When people ask me if I like my Jeep, "Hell yeah!"

Last Friday, I was backing out of a parking lot and the Jeep stalled and I couldn't put it into drive. Waited and started it back up and pulled forward to check for codes and nothing. I reversed it out of the parking spot again and it stalled a second time. Waited and started it back up and luckily the lady in the spot in front of me pulled out so I juts pulled it forward and headed to the dealership.

Dealership had no openings and I needed reliable transportation for the weekend and they were not able to get to the vehicle until the following Monday. Needless to say I had to rent($$$) a vehicle.

Dealer called me on Monday and could not duplicate the stall and no codes were found. They said spark plugs needed to be changed out and there was some oil leaking out from the engine.

Today I was getting gas and the Jeep stalled again. Try putting it into park, reverse, neutral nothing. Waited a few minutes and started it up again and was able to pull it forward and get some gas.

I did notice on the way home when I got to 15mph the Jeep seemed to lurch forward. Anyways I've already spent $100 for a diagnostic test at the dealership only to find nothing wrong, so I'm not sure where to go from here. Plus money on the spark plugs, fix the oil leak and the car rental.

Maybe I need to look at changing out the crankshaft sensor? Thoughts?? It seems this has been happening in a lot of the 2012-2013 Wrangler's from other forums I've read.

My problem was the Torque converter lockup Selenoid that was faulty and was allowing the torque converter to lockup at 15mph.
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Old 12-25-2017, 10:40 AM   #26
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A friend of mine thinks it could be a bad crankshaft sensor.
Ding ding ding!!!
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Old 12-30-2017, 11:13 PM   #27
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Any follow up to this issue? I have a 2016 JKUR that is stalling when putting into gear when the temps are under 20*.

The issue occurs even after letting the vehicle warm up and there are no CEL indicators or other issues I see.
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Old 12-31-2017, 10:45 AM   #28
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Thanks, guys for the replies! I replaced the crankshaft sensor and have not had any issues! I pray this is the answer and no longer will have any issues!
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Old 01-01-2018, 12:17 AM   #29
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Does any one have any instructions or guides I can use to show me how to replace the crankshaft position sensor?
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Old 01-01-2018, 01:43 AM   #30
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Does any one have any instructions or guides I can use to show me how to replace the crankshaft position sensor?
There is a YouTube video on how to do it if you do a google search

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