"rev hang"

Ghettokracker71

LS/Vturd
So in this cold weather, my LS is holding on to revs like it never used to. WHen I say that, I mean if I'm cruising up to a stop sign, pop the clutch and brake, the RPMs will hold roughly 1,700-2,800 for no apparent reason?

This is after its fully warmed up of course,and its really annoying. Its always had a REALLY slight rev hang ordeal in the cold, but this holds alot longer,and is alot higher RPMs than it used to. Usually by the time I've stopped at a stop sign, and go to pull out,...its still holding the RPMs, sometimes it has start to gone down by then i heavy traffic. Alot of times if I just give the gas a slight tap, it'll drop back down to normal idle.

Any else dealing with this?

I've got a fresh replaced/properly calibrated blox TPS sensor(when I had the TB off to dremel the OEM TPS sensor, I scrubbed it perfectly clean, and pulled all the other sensors on the IM and cleaned that perfect...hell of a job, she felt alot more resposive after that though lol! ) and also pulled the IACV and got that perfectly clean.

Sorry for the long post
 

TeggyBear_Ls

90 EF LS/V 95 DC4
x2 for vacuum leak
Mine does it too. But I bet it's when my bro installed the boost gauge. It's probably leaking out the silicone line. Dunno where it is on your car though.
 
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