Checks
| Action
|
Definition: The engine delivers less than expected power. There is little or
no increase in speed when partially applying the accelerator pedal.
|
Preliminary Checks
|
| • | Compare the vehicle with a similar unit. Make sure the vehicle has an
actual problem. |
| • | Remove the air filter and check for dirt, or for air ducts being plugged
or clean. Replace as necessary. |
| • | Check for a proper transmission shift pattern and down shift operation. |
| • | Check the fuel quality. |
| • | Check the engine oil level and quality. |
|
Fuel System Checks
|
| • | Check the fuel supply to the injection pump and the fuel return from the
injection pump. Refer to
Fuel Supply System Check
. |
| • | Check the fuel pump operation. |
| • | Check for malfunctioning fuel injection nozzles. |
|
Exhaust System Checks
|
| • | Check the exhaust system for a possible restriction. |
| • | Inspect the exhaust system for damaged or collapsed pipes. |
|
Air Intake System Checks
|
| • | Check for an air leakage or restriction in the air inlet ducts or the
intake manifold. |
| • | Check for a worn or damaged turbo charger turbine wheel, shaft or compressor
wheel. |
|
Engine Mechanical Check
| Check the engine for the following:
| • | Improper or worn camshaft |
|
Additional Checks
|
| • | Check the control module grounds for being clean, tight, and in their
proper location. Refer to Component Locations. |
| • | Check the torque Converter Clutch (TCC) operation. |
| • | Check the generator output voltage. Repair if less than 9 or more than
16 volts. |
|
