Rough idle software upgrade

[Leights7]

Hi everyone.

My idle is slightly rough - not too bad but noticeable. You can see the engine shake when the hood is up and while at a stoplight, you can see the passenger seat shake. I have read on these forums about a software upgrade that may fix the issue. I'm interested to know if anybody has had it done and if the engine idle is significantly smoother. Thanks! https://www.jlwranglerforums.com/fo...reprogram-september-7-2018.15739/#post-422669

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[ibrahim_86]

Good day , do have an update to this issue ! Did U manage to fix it ?

 

[wv18jl]

Taking mine in Friday to have the TSB done.
The day we bought ours we drove two others.
One six speed and one auto.
Neither had the vibration at idle that ours does.
Will get back with you guys on Friday evening with the results..

 

[ibrahim_86]

Great !
Waiting for the feedback and results

 

[wv18jl]

Took it in today and was told the TSB did not apply to my jeep.
The shop manager is an old friend from high school who has warranteed vehicles for me since 1991 so I have no reason to doubt him.
He said they hooked it up and everything looked fine.

Sorry guys that's all I have.

 

[VictorChampion]

Got mine flashed yesterday. I can tell a noticeable difference for the good. It idles the way all my previous Pentastar's in JK's did.

 

[Leights7]

Update. They flashed mine today and it didn't need any upgrade. Again, my had a slight rough idle on cold starts but the mechanic said that is normal because the valves are driven by oil and when cold, the oil understandably doesn't flow as well. I am glad I had the software checked and if anybody has a concern with their idle, I'd recommend going in with a printed sheet of the Service Bulletin and get them to check it.

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