AIS 1 Preliminary Checks - Hesitation/Stalls on Acceleration

^ Key OFF, engine OFF.

^ Check that throttle lever is resting on throttle plate stop screw.

^ Key ON, engine RUNNING.

^ Check engine operating temperature and coolant level in overflow reservoir.

^ Check for vacuum leak At intake manifold and hose routings.

^ Check for proper operation of EGR valve.

^ Check for ignition or exhaust malfunction.

^ Check fuel quality (contamination).

^ Are any problems found?

YES -- Service or adjust as necessary. Replace parts as necessary.

NO -- Go to AIS 4. AIS 4 Vacuum Motor Check