Stalls at Idle, Deceleration

Engine stalls at stops and on deceleration.

POSSIBLE CAUSE ACTION

EGR valve loose or sticking Check the EGR system under
plunger, flange gasket leaking, TESTING PROCEDURES.
solenoid and thermo valves
malfunctioning



Ignition timing Check Ignition Timing. Refer to
ADJUSTMENT PROCEDURES.



Restricted exhaust system Check the Catalytic Converter
under TESTING PROCEDURES.



Idle speed too low Check idle speed. Refer to
ADJUSTMENT PROCEDURES.



Vacuum leak Inspect vacuum hoses for
routing and damaged lines
Check intake manifold area.