Inspection/Test
| Action
|
DEFINITION: Engine
cranks OK, but does not start for a long time. Does eventually run,
or may start but immediately dies.
|
Preliminary
|
|
Sensor/System
|
• | Inspect the engine coolant temperature (ECT) sensor for being shifted
in value. Install the scan tool and compare the displayed engine coolant
temperature with the intake air temperature on a cold engine. Check
the resistance of the ECT sensor if the engine coolant temperature
is not within ±3°C (5°F) of intake air temperature (IAT).
Refer to
Temperature Versus Resistance
. If the ECT sensor resistance
is not within the specification, refer to
DTC P0117
or
DTC P0118
. |
• | Inspect the mass air flow (MAF) sensor and connections. |
• | Using the scan tool, monitor the throttle position (TP) sensor voltage.
The TP sensor voltage should be less than 0.9 volts with a closed throttle.
If the TP sensor voltage is more than 0.9 volts, inspect
the throttle body and accelerator cables for binding. |
|
Fuel System
|
|
Ignition System
|
• | Inspect the operation of crankshaft position (CKP) sensors A and B. |
• | Test for proper ignition voltage output using the J 26792
Spark Tester . |
• | Inspect for damaged ignition coils within the ignition coil module
assemblies. |
• | Inspect for damaged or misaligned spark plug boots. |
• | Inspect for a missing or damaged ignition module ground spring. |
|
Engine Mechanical
|
• | Inspect the following for incorrect or damaged basic engine parts: |
- | Camshaft and valve train components |
- | Pistons, and piston assemblies |
|