High Idle Help Please! - 3000GT/Stealth International Message Center

S7EaLTH · 02-26-2010, 04:24 PM

Hi, I own a 1994 Dodge Stealth SOHC N/A and I have a high idle of around 2,000 RPM (and it doesn't lower much even when warmed up). I was wondering what could cause it, because I have already cleaned the MAF and TB, which didn't do much. I also have an aftermarket air intake/filter if that makes a difference. So if anyone could please tell me what else could cause it to idle around 2,000 RPM that would be great.

Thanks!

x2xtreme360 · 02-26-2010, 04:28 PM

Has it always been this high? Did you do anything to the car prior to this happening? Try tightening the BISS screw on the TB... maybe it has loosened.

S7EaLTH · 02-26-2010, 06:06 PM

I bought it about a month ago, and talked to the last owner, he said he bought it that way. How would I go about adjusting the BISS screw?

Thanks.

x2xtreme360 · 02-26-2010, 08:08 PM

It's located in the throttle body. There is a little plate covering it. Pry that off with a flathead and you'll see the phillips head screw in there. Tighten it to lower the idle

AvengedSario · 02-26-2010, 09:03 PM

try that if it dosent work most likely a vacuum leak

Stealthee · 02-26-2010, 09:07 PM

http://www.3si.org/forum/5620877-post19.html