Camaro V8-350 5.7L (1989)
^
Check AIR management system for intermittent air to ports while in "Closed Loop".
^
In addition to electrical control of EGR, be sure to examine the EGR valve for proper seating.
^
Faulty battery cables can result in voltage variations. The ECM will try to compensate, which results in erratic idle speeds.
^
The ECM will compensate for A/C compressor clutch loads. Loss of this signal would be most apparent in neutral.
^
Contaminated fuel can adversely affect idle. Perform injector balance test CHART C-2A.
^
If all OK, refer to TESTING PROCEDURES/DIAGNOSIS BY SYMPTOM/STALLS-ROUGH,UNSTABLE OR INCORRECT IDLE.
