Century V6-3100 3.1L VIN M SFI (1998)
Idle Speed/Throttle Actuator - Electronic: Testing and Inspection
If the IAC pintle is open fully, too much air will be allowed into the manifold. This results in high idle speed, along with possible hard starting and a
lean air/fuel ratio. DTC P0507 may set. If the IAC pintle is stuck closed, too little air will be allowed in the manifold. This results in a low idle speed,
along with possible hard starting and a rich air/fuel ratio. DTC P0506 may set. If the IAC pintle is stuck part way open, the idle may be high or low
and will not respond to changes in engine load. For diagnosis of DTC P0506 and DTC P0507 refer to System Diagnosis / Diagnostic Tables /
Diagnostic Trouble Code Tables. See: Computers and Control Systems/Testing and Inspection
