2001 Chrysler pt cruiser. 2.4L 4cyl 5speed Scotty , I watch your channel on YouTube religiously, …

Lugnut061395

2001 Chrysler pt cruiser. 2.4L 4cyl 5speed Scotty , I watch your channel on YouTube religiously, I’m a ford factory trained technician and I just seem to be dumbfounded with this car it’s got an extremely rough idle and that is it. But once you throw it in gear and start moving it runs fine it’s got a really rough idle you can hear it misfire and I did pull code P0171 engine lean bank one I’ve also already completely diagnosed that’s the vacuum brakebooster is shot. However there’s a bunch of articles and and forums stating that it could be a crack in the intake Plenum and it’s sucking Unmetered air, or idle air control valve or EGR related issues It recently had spark plugs and wires put in. It is high idling almost at 1800 to 2000 and it jumps it’ll go from 1200 to 1500 and from about 1500 to 1700 and then back down and continue to do that mind you this is always at Idle I have already examined the throttlebody butterfly valve it is not occluded the air box is in good shape I visually inspected all of the vacuum lines they don’t appear to be cracked I don’t hear any hissing that would indicate a vacuum leak any thoughts would be appreciated as the only code I was able to Pull was a P0171