Stalls at Idle, Deceleration

Engine stalls at stops and on deceleration.

POSSIBLE CAUSE ACTION


EGR valve loose or sticking Check EGR system. Exhaust Gas Recirculation
plunger, flange gasket leaking,
solenoid and thermo valves
malfunctioning



Ignition timing Refer to COMPUTERS AND CONTROL SYSTEMS. Computers and Control Systems



Restricted exhaust system Check Catalytic Converter. Catalytic Converter



Idle speed too low Refer to COMPUTERS AND CONTROL SYSTEMS.Computers and Control Systems



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



PCV system clogged Check PCV system. Positive Crankcase Ventilation