For 1990-2009 cars

Definition: Engine cranks fine but does not start immediately. Does eventually run, or may start but stalls immediately.

Check normal Scan tool readings of:

• | Engine coolant temperature (ECT) sensor

• | Manifold absolute pressure (MAP) sensor

• | Throttle position (TP) sensor

• | Intake air temperature (IAT) sensor

Check:

• | Fuel system and fuel quality

• | Idle air control (IAC) valve excessive carbon build-up or deposits

• | Arching spark plug boots

• | Engine mechanical problems (e.g., low compression, sticking lifters, worn valve train)

• | Carbon deposits in intake manifold

• | Worn spark plugs