Idle speed for 1985??
Thread Starter
Instructor
Joined: Oct 2002
Posts: 218
Likes: 4
From: Durham NC
Idle speed for 1985??
What is the expected idle speed for the 1985 corvette. When idling with the AC on, my alternator light comes on. I am believing that the idle speed is set too low. Any ideas??????
Burning Brakes
Joined: Apr 2004
Posts: 762
Likes: 2
From: Huntington ma
Re: Idle speed for 1985?? (J H)
But... (there is always a But)... The computer is supposed to maintain the correct Idle speed using the IAC (Idle Air Control) motor. There IS a "manual" idle stop adjustment (which was sealed at the factory, but has most likely long since been uncovered by Someone...), so you could "turn it up" yourself - at least the minimum speed, but if you set it up to where you want it in gear/AC on then it will probably be idling too high the rest of the time. Better to figure out why the computer isn't controlling it correctly - bad IAC, dirty Throttle body (common problem), etc. [Modified by rons85, 8:08 PM 7/7/2004]
Instructor
Joined: May 2004
Posts: 163
Likes: 0
From: machesney park il
Re: Idle speed for 1985?? (J H)
base idle speed for a 85 was 450rpm,later gm reccomended base idle speed reset to 550rpm.i have reset mine to 600-700 as vader has said.
[Modified by vettenut85, 6:47 AM 7/8/2004]
[Modified by vettenut85, 6:47 AM 7/8/2004]
Burning Brakes
Joined: Nov 2003
Posts: 935
Likes: 2
From: Beverly, NJ
Re: Idle speed for 1985?? (vettenut85)
base idle speed for a 85 was 450rpm,later gm reccomended base idle speed reset to 550rpm.i have reset mine to 600-700 as vader has said.
[Modified by vettenut85, 6:47 AM 7/8/2004]
[Modified by vettenut85, 6:47 AM 7/8/2004]
