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
|
| • | Refer to Important Preliminary Checks. |
| • | Compare customers vehicle with a similar unit. Make sure the customer
has an actual problem. |
| • | Remove air filter and check for dirt, or for air ducts being plugged
clean or, replace as necessary. |
| • | Transmission shift pattern and down shift operation. |
| • | Check fuel quality, refer to Fuel Specific Gravit Check. |
| • | Check engine oil level and quality. |
|
Fuel System
Checks
|
| • | Check the fuel supply to injection pump and fuel return from injection
pump. Refer to Fuel Systems. |
| • | Check fuel pump operation. Refer to Fuel Systems. |
| • | Check for faulty fuel injection nozzles. Refer to Fuel Systems. |
|
Exhaust
System Checks
|
| • | Check the exhaust system for a possible restriction. Refer to
Control Module Systems. |
| • | Inspect the exhaust system for damaged or collapsed pipes. |
|
Air Intake
System Checks
|
| • | Check for an air leakage or restriction in air inlet ducks or
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 valve timing |
| • | 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 Control Module Systems. |
| • | Check the generator output voltage. Repair if less than 9 or more
than 16 volts. |
|
