correct idle?
Team Owner
Joined: Jul 2004
Posts: 28,371
Likes: 3,259
From: Hartford WI
Why do you care? Have you done any mods or chips? Is there an issue you are trying to solve? Most importantly, do you have some sort of scanner? My Auto-X-Ray will tell me exactly what the commanded idle speed is. What yours is in the chip we don't know. Also why are you wanting to know? Do you suspect it is too high or just running erratically?
Burning Brakes
Joined: Apr 2009
Posts: 877
Likes: 0
From: Broken Arrow Oklahoma
Keep one thing in mind that the factory Tachometer has a tendency to become a little inaccurate after a while, mine is about 250 RPM off. It has something to do with an electronic component. I have a digital inductive dwell/tachometer that verified this.
the tach shows 1000 RPM's but is actually running at 750.
So don't rely on your factory Tach.
the tach shows 1000 RPM's but is actually running at 750.
So don't rely on your factory Tach.
Drifting
Joined: Oct 2004
Posts: 1,976
Likes: 0
From: Patchogue NY
Keep one thing in mind that the factory Tachometer has a tendency to become a little inaccurate after a while, mine is about 250 RPM off. It has something to do with an electronic component. I have a digital inductive dwell/tachometer that verified this.
the tach shows 1000 RPM's but is actually running at 750.
So don't rely on your factory Tach.
the tach shows 1000 RPM's but is actually running at 750.
So don't rely on your factory Tach.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Team Owner
Joined: Jul 2004
Posts: 28,371
Likes: 3,259
From: Hartford WI
At that point, all bets are off. You need to have the chip reprogrammed for that cam and they will set the idle there. My command idle is 800-900
Team Owner
Joined: Jul 2004
Posts: 28,371
Likes: 3,259
From: Hartford WI
Actually, ASSUMING the chip is programmed right and the timing is set right and no other issues are present, I set the IAC by the counts. I get it warm and in closed loop first. Hook up scanner and see what the IAC counts are. Adjust throttle position screw till I get 15-20 counts. Set TPS (some can and some cannot be set. I hogged mine out so it can be set), clear codes and go on my merry way.