Stalls During Deceleration or at Idle

Symptom: Engine stalls at stops and on deceleration.

POSSIBLE CAUSE ACTION


Idle speed too low ^ ^ Perform minimum Airflow test.
SEE Powertrain Management/Computers and Control Systems/Testing and Inspection/Procedures.


Incorrect spark advance ^ Check spark controls.
SEE IGNITION SYSTEM/ TIMING SPECIFICATIONS


EGR malfunction ^ Check EGR system.


Restricted exhaust system ^ Check Catalytic Converter.


Poor or contaminated fuel ^ Recommend higher grade fuel


Vacuum leak ^ Check vacuum lines and routing.
Refer to Vehicle Emission Control Information (VECI) label under hood.

^ Check intake manifold
and vacuum components