how do i set the idle on a tbi system

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Mar 30, 2005 | 01:53 AM

drumsk

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how do i set the idle on a tbi system

Alright folks How do I set the idle on a tbi 5.0 right now in neutral it revs at 1100 in drive about 650. What do i do?

Mar 30, 2005 | 05:59 AM

ShiftyCapone

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From: Cincinnati, OH

Car: '90 RS

Engine: 377 LSX

Transmission: Magnum T56

Your idle is fine. CHances are it is actually lower than your tach reads. Our tachs are way off. Also, on TBI systems you cannot manualy control the idle. It has to be done in the chip. There is an idle screw but it is burried behind a pressed in cap on the TBI unit. GM did this so people wouldn't be trying to change it incorrectly.