Removing base idle screw cover.
Burning Brakes
Joined: Feb 2000
Posts: 1,247
Likes: 2
From: Parker, Colorado, USofA
Re: Removing base idle screw cover. (FlyboyZR1)
I dunno, mine had already been removed. Be warned though, it's NOT a base idle screw. The computer will fight to keep the RPM it thinks it should have, reguardless of what you try to set that screw to. If you run it out too far, you'll set a code because the computer sees the throttle blades too far open.
Burning Brakes
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Re: Removing base idle screw cover. (RocketSled)
If your idle screw has never been touched, a small, light metal plug covers the screw. It's like a metal cover protecting some cans containing a liquid, like brake fluid. Just take an awl or sharp pointed object, pierce, bend slightly and remove. Not replaced, at least on my 90.
dlmeyers 90 coupe zf6 3 speed shocks
dlmeyers 90 coupe zf6 3 speed shocks
Thread Starter
Drifting
Joined: Aug 2001
Posts: 1,550
Likes: 27
From: Minneapolis MN
Re: Removing base idle screw cover. (dlmeyers)
Well I suppose since there is a cover over the screw, the base idle is whatever it was from the factory, so I won't have to adjust it? I'm just wondering because I'm putting in a new IAC.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Removing base idle screw cover. (FlyboyZR1)
First install the new IAC, put the paper clip across A&B to extend the pintel, start the engine and verify base idle is about 450rpm.
If not, pop that sucker and adjust the base idle.
Then you may need to trim out the TPS base & max settings.
If not, pop that sucker and adjust the base idle.
Then you may need to trim out the TPS base & max settings.
Burning Brakes
Joined: Feb 2000
Posts: 1,247
Likes: 2
From: Parker, Colorado, USofA
Re: Removing base idle screw cover. (FlyboyZR1)
Granted, it's in my 89, so things could be entirely different, BUT:
IIRC, the Service manual procedure for setting the IAC is to start the car and bring it immediately to 2000 rpm. Count to 15 seconds, turn the motor off.
Restart the motor and let it settle down.
IIRC, the Service manual procedure for setting the IAC is to start the car and bring it immediately to 2000 rpm. Count to 15 seconds, turn the motor off.
Restart the motor and let it settle down.
Le Mans Master
Joined: Dec 1999
Posts: 8,540
Likes: 1
From: And on the fifth day, subpoenas were served to Obama senior staff
Re: Removing base idle screw cover. (RocketSled)
Amazing what you could find in the "tech tips" section of this forum.
https://www.corvetteforum.com/techti...D=55&TopicID=2
https://www.corvetteforum.com/techti...D=55&TopicID=2
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