Inspection
| Action
|
DEFINITION: The engine delivers less than expected power. There is little or no increase in speed when partially applying the accelerator pedal.
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Preliminary Inspection
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| • | Compare the vehicle with a similar unit. Ensure the vehicle has an actual problem. |
| • | Compare the scan tool data with the scan tool data list while the engine is idling. Refer to
Scan Tool Data List
. |
| • | Ensure that the power take off (PTO) switch is in the OFF position. |
| • | Remove the air filter and inspect for dirt, or for air ducts being plugged or leaking. Repair or replace as necessary. |
| • | Inspect for a proper transmission operation. |
| • | Inspect the engine oil level and quality. |
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Fuel System Inspection
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| • | Observe the actual vs. desired fuel rail pressure with the engine idling. |
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Exhaust System Inspection
| Inspect the exhaust system for a possible restriction. Refer to
Restricted Exhaust
in Engine Exhaust.
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Air Intake System Inspection
|
| • | Inspect for an air leak or restriction in the air inlet ducts or the intake manifold. Refer to
DTC P0234
. |
| • | Inspect for an air leak in the charge air cooler. |
| • | Inspect the charge air cooler for a restriction. |
| • | Inspect for a worn or damaged turbo charger turbine wheel, shaft or compressor wheel. |
|
Engine Mechanical Inspection
| Inspect the engine for the following:
Refer to
Engine Compression Test
in Engine Mechanical-6.6L.
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Additional Inspection
|
| • | Inspect the control module grounds for being clean, tight, and in their proper location. |
| • | Inspect the torque converter clutch (TCC) operation. |
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