73CamaroLT

iTrader: (8)

So my car has the famous high idle problem but idk what the fix is? I put a ported TB on my car a year and a half ago. Had a high idle every now and then, pretty common no big deal. Recently I took the TB to have it powdercoated. put a stock TB for a week or so then swapped the freshly powdercoated one back on. Now the damn thing idles at 1300+ unless the car is at a complete stop then it drops to 950 which is still high. It used to be around 800.

It idles higher when I go straight down a hill near my house and put the clutch in, rises to about 1800 but it is not based on speed. Even just rolling backwards out of my driveway it rises and that is rolling backwards no help from the trans. My car has the near style hollow PCV valve with the small hole. The car was tuned in September. The problem only started after the Tb was powdercoated. The guy did say he took It apart to powdercoat and I think a problem lies in there.

Any help?

73CamaroLT

iTrader: (8)

Bump still have this problem any help? Really want to get this fixed.

WS6ICK2k

You still running the stock LS6 intake? Most commonly high idle is associated with a vacuum leak somewhere in the system.

Warbird98

iTrader: (1)

Mine was a worn out spring in the tps on the side of the throttle body. Would not let my car idle down .ldled at 1000+ replaced the tps now car idles at around 800

73CamaroLT

iTrader: (8)

Yea stock LS6, im probably going to replace all the lines in the PCV system so i have a better routing for my catch can. Hopefully that will fix it.

I let a buddy of mine borrow my stock TB so i will get it back and swap it over, thanks for the tips guys

demonspeed

iTrader: (7)

The PCV hose cracks between the manifold and valve. Electrical tape or a small piece of heater hose will suffice until you can afford/get around to '04 LS6 PCV conversion. You can see more about this in my build thread.