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Home >> Chevrolet >> 1992 >> Lumina Z34, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 2.5L/151 TBI In-Line 4 VIN [R] >> Air Induction/Idle Control System Testing >> Fast Idle Check/Adjust
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Fast Idle Check/Adjust

The fast idle is electronically controlled by the Electronic Control Module via the Idle Air Control (IAC) valve assembly. No adjustment provisions exist.

FAST IDLE RPM SPECIFICATIONS (1)

Application RPM
2.5L (VIN R)
A/T (2) 600
M/T 600
(1) Specifications are for reference only, with ALDL in Open mode. No adjustment is possible, as the speed is electronically controlled via IAC motor.
(2) In DRIVE.
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