Stalls at Idle, Deceleration

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.
Exhaust Gas Recirculation


Restricted exhaust system ^ Check Catalytic Converter.


Poor or contaminated fuel ^ Recommend higher grade fuel


Vacuum hose routing ^ Refer to Vehicle Emission Control Information (VECI) label under hood. (If label is gone or not readable, verify system and SEE SCHEMATIC AND ROUTING DIAGRAMS.)

Vacuum leak ^ Check around throttle body, intake manifold and vacuum components.