Surge, Hesitation, Stall on Acceleration

Engine hesitates or stumbles on acceleration, sometimes stalling. This condition can occur at any speed, but primarily from a stop. Vehicle may also experience a surge or rise and fall of engine speed at cruise or steady throttle.

POSSIBLE CAUSE ACTION


Spark timing Check Spark Controls in
"Fuel Injection and Computerized
Engine Controls"



Air management valves Check Air Injection system in
"Testing Procedures" in Emissions



Faulty canister purge Check Evaporative system in
liquid fuel in carbon canister "Testing Procedures" in Emissions



Ignition timing Check Ignition Timing in "Adjustment
Procedures" in Emissions



Restricted exhaust system Check Catalytic Converter system in
"Testing Procedure" in Emissions



Poor or contaminated fuel Recommend higher grade fuel