Not sure if this is normal or not but I recently noticed this when I revved up my car(which I don't do often) so it's probably why I never noticed it.

After revving the rpms will float back up and stick around 1500-2000rpm. Also noticed they will float around when I'm in neutral coming to stop if not downshifting.

I took a video. At the end when it floats up my foots not on the gas. Any input is appreciated. Thanks

 

no one has an idea?

 

You can try cleaning out your throttle body

 

Can't watch the video (at work) but cleaning your TB and checking for vacuum leaks is an easy place to start. Maybe someone with more experience can chime in.

 

Yeah I did clean the TB a couple months ago.. maybe i could check it again. Not too sure how to check for vaccum leaks though lol

 

If you cleaned it recently then thats probably not the issue. Old school way is take some starter fluid and spray around (avoid exhaust area) if the engine revs up there is a leak there. You could also go over the lines by hand looking for brittle or missing lines. Wish I knew the common spots for vac leaks on the LSJ to narrow your search down.

 

Tried looking around for vac leaks didn't see anything. Gonna try cleaning maf and getting some starter fluid. MPG also been dropping

 

Can't find any leaks with starting fluid.. Anyone else have an idea?? Thinking it could be throttle body related

 

Mine's done that since new. Normal

 

Mine does this but not all the time been trying to figure it out so if I make progress I'll let u know