Starts, But Stalls

Engine starts but will not idle, stalls immediately after start-up. May or may not idle after re-start.

POSSIBLE CAUSE ACTION


EGR valve always open,
or gasket leaking See Exhaust Gas Recirculation System


Ignition timing incorrect Check ignition timing.
See Adjustments


Restricted exhaust system See Three-Way Catalytic Converter


Base idle speed too low Check idle speed.
See Adjustments


Idle speed control valve defective
See Computers and Control Systems


Unmeasured air (vacuum leaks) Inspect air flow meter,
vacuum hoses, intake air ducts
and manifold.
See Fuel Delivery and Air Induction


Evaporative system malfunction or leak See Evaporative Emission Control System


PCV system clogged, restricted or leaking See Positive Crankcase Ventilation System