Checks
| Action
|
Definition:
The engine has a power variation under a steady throttle or cruise. The vehicle
feels as if it speeds up and slows down with no change in the accelerator
pedal.
|
Preliminary
Checks
|
| • | Be sure the driver understands the Torque Converter Clutch (TCC)
operation. |
| • | Be sure the driver understands the A/C compressor operation. |
| • | Use the Scan Tool in order to ensure the reading of VSS matches
the vehicle speedometer. This excludes vehicles with electronic transmissions
where some variation between the VSS and the speedometer is normal. Refer
to DTC P0501 Diagnostic Aids. |
|
Fuel System Checks
| Check the fuel pressure
while the condition exists. Refer to Fuel Systems.
|
Additional Checks
|
| • | Check the control module grounds for being clean, tight, and in
their proper locations. |
| • | Check the generator output voltage. Repair if less than 9 or more
than 16 volts. |
| • | Check the vacuum lines for kinks or leaks. |
| • | Check the TCC operation. |
|
