tomb
OBS Enthusiast
Is your idle air control solenoid in spec? Your idle is directly controlled by the IAC from the computer. If the IAC is good then your O2 sensor is lying to the PCM. Look on YouTube how to check your O2 sensor with a digital meter. Or just replace it. Use a delphi or a.c. delco. I USE to think the PCM will tell you when the O2 goes bad... not always true. Drive-ability can be greatly effected without throwing a code OBD1 or OBD2. Make sure to inspect the O2 wiring too.
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