Shaking at idle (Powerboost 3.5)

[Jerome10]

I get this every now and then on my powerboost too. Sometimes its butter, other times off a little bit. Then other times the eco-idle raises the RPM and that always seems to be OK.

I've looked into it a bit and it sounds to be extremely common on the 3.5L, powerboost or no powerboost. I wanna say some people were wondering if the switching between port and direct injection may be the cause. I just never cared enough to dig deeper. Its a little annoying but I can live with it if it is considered normal.

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[VRFlyer]

2024 shakes at idle. Worse when cold. If this was my old cj7 I would adjust the carb. Using 93 octane. Is this common issue? Leave alone/normal? Seems more pronounced than it should be. 3000 miles

Nah, man. You probably got the PowerBoost RATTLER package edition.

 

[Jmitchelltfo]

My 2021 has an intermittent rough idle. I changed the plugs just before 50k miles and it didn't seem to make any difference, but low/mid speed drivability and smoothness was noticeably improved.

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