Correct idle speed for 305 TPI (auto)?
Joined: Sep 2005
Posts: 27,871
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Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Correct idle speed for 305 TPI (auto)?
Largely the same as any other EFI engine. 650 RPM or thereabouts in both N & D since the ECM cracks the throttle a bit more in D to keep the RPMs constant.
Joined: Dec 2004
Posts: 16,737
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From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Correct idle speed for 305 TPI (auto)?
Yup 650 warm, 100 rpm adder park and neutral. Warm iac counts 20-25. If minimum idle speed has been set properly then adjust tps to ,54vdc
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Re: Correct idle speed for 305 TPI (auto)?
Target idle is a function of coolant temperature, plus adders for park/neutral, fan anticipate, A/C operation, and keep-alive function. The "setting" is for minimum air position under specific conditions, then the ECM takes over. .
Joined: May 2001
Posts: 1,427
Likes: 496
From: Pflugerville, Texas
Car: 92 Heritage Camaro Z28
Engine: 350 TPI
Transmission: auto
Axle/Gears: 3.23 Limited Slip
Re: Correct idle speed for 305 TPI (auto)?
My stock 350 is at about 1000 rpms in park and about 725 rpms in drive.
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