Stalls at Idle, Deceleration

Engine stalls at stops and on deceleration.

POSSIBLE CAUSE ACTION

EGR valve loose or sticking Check EGR system in TESTING
plunger, flange gasket leaking, PROCEDURES
solenoid malfunctioning

Ignition timing Check Ignition Timing in ADJUSTMENT
PROCEDURES

Restricted exhaust system Check Catalytic Converter system
in TESTING PROCEDURES

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