Idle RPM Question
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Joined: Mar 2004
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Idle RPM Question
My 1992 Camaro RS 305 TBI engine idles at about 1000 RPM when cold. When I switch on the A/C with the motor cold the idle rpm drops to about 850 RPM. This is on the factory tach. Laptop hooked to the computer shows idle of 1125 when cold a/c off. Did not check with a/c on. Any idea what is going on here?
Supreme Member
Joined: Sep 2002
Posts: 9,192
Likes: 20
From: Cary, North Carolina
Car: 1992 RS
Engine: Carbed 350
Transmission: 700R4
Axle/Gears: 3.42 posi
Re: Idle RPM Question
Normal operation. A/C drains power, so idle decreases. At warmed up op temps, idle should be about 600rpm.
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