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 customer's vehicle with a similar unit. Verify the
customer concern. |
| • | Remove the air filter and check for dirt or a restriction. |
| • | Check the transmission shift pattern and the downshift operation.
Refer to A Diagnostic Starting Point - Automatic Transmission in Automatic
Transmission. |
|
Fuel
System Checks
|
| • | Check for a restricted fuel filter, contaminated fuel, or improper
fuel pressure. Refer to
Fuel System Diagnosis
. |
|
Exhaust
System Checks
|
| • | Check the exhaust system for a possible restriction. Refer to
Restricted Exhaust
in Engine Exhaust. |
| • | Inspect the exhaust system for damaged or collapsed pipes. Inspect
the muffler for heat distress or a possible internal failure. |
|
Additional
Checks
|
| • | Check the control module grounds for being clean, tight, and in
their proper location. |
| • | Check the Torque Converter Clutch (TCC) operation. Refer to A
Diagnostic Starting Point - Automatic Transmission in Automatic Transmission. |
| • | Check the Knock Sensor (KS) system. |
|
Engine
Mechanical Check
| Check the engine for the proper operation of the following items:
| • | Improper or worn camshaft |
|
