Engine idle

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01-18-2005, 12:28 PM

Preston

Contributing Member

Thread Starter

Join Date: Dec 2004

Location: Cokeburg, PA

Posts: 593

Engine idle

Can anyone tell me why my 91 240 idles at about 1300? I know this is insanely high when it's supposed to be like 700-750. Anything I can do to adjust/fix this as I'm new to the 240 scene? Thanks.

01-18-2005, 12:57 PM

Wakuwakusan

Registered User

Join Date: Dec 2004

Posts: 20

check the belts, or fix the timing. Hopefully that helps. the timing should be set at 18.

01-18-2005, 09:02 PM

revolutionz_s13

Registered User

Join Date: Feb 2004

Location: North Dakota

Posts: 283

You should just be able to adjust the idle with the idle adjust screw. It on the IACV-AAC valve, which is located between the 3rd and 4th runners on the intake manifold. The idle should be at 700 +/- 50 RPM with all accessories off. If you need help locating the right screw, any mechanics shop should be able to show you which one it is.