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Any update?

Let us know if this solves the problem

Both are German. I would caution against throwing money at problems. If you're looking to do O2 sensors and want to save money, I'd recommend getting these "used" from the Amazon Warehouse for $25...

It is. People that install aftermarket intakes are idiots - they suck warm air from the engine compartment.

That's plenty to reset the adaptations. Do you have the OEM air intake installed? After running and coming to a stop, hot air could cause issues.

Wishful thinking being afraid to remove the intake manifold again, but sorry, I was being insensitive.

131F seems high, but if others are reporting it, I could believe it. It would cause wonky...

Don't reason with wishful thinking. 131°F seems way too high, unless you don't have your air filter installed, or have some aftermarket air filter installed. Do you have a "warm air intake"...

I have no idea how to read these values. What is "short term fuel trim" and "long term fuel trim"? What is ignition timing advance?

I do know what intake air temperature means, and 131F seems...

Did the rough idle start suddenly? Do you know when it started relative to any parts you replaced? If you do, that's the first place I would look.


I think it's a safe assumption that the...

Truly a mystery, time to dig down.

What's the mileage of the car? Have you hooked up a computer to read codes that might be present but not throwing a CEL? At this point a proper diagnostics is...

Hhhmmm... my money is on something simple/stupid. I'd run another smoke test. Otherwise it could be the flywheel (mine rattles on occasion while idling).

I just did my intake manifold removal cooling system replacement and everything that goes with it, including the oil sep system and cleaning the ICV valve.

I cleaned the throttle body and reset...