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. Refer to |
| • | 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 . |
| • | Check the fuel lift pump operation. |
| • | Check for malfunctioning fuel injection nozzles. |
| • | Check the TDC Offset value. Refer to |
|
Exhaust System Checks
|
| • | Check the exhaust system for a possible restriction. Refer to |
| • | Inspect the exhaust system for leaks. |
|
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 turbocharger 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 A/C operation. Refer to |
| • | Check the generator output voltage. Repair if less than 9 or more
than 16 volts. |
|
