Hesitation, Sag, Stumble

Engine power variation under throttle or cruise. Feels like the vehicle speeds up and slows down with no change in accelerator position. Make sure the driver understands the operation of the Torque Converter Clutch (TCC).



POSSIBLE CAUSE ACTION


Fuel pressure variation See Diagnostic Chart A-7B.




Injector intermittent operation See Diagnostic Chart A-5 and INTERMITTENTS in this section.




Intermittent TPS signal See INTERMITTENTS in this section.




False Data from CTS, TPS, or MAP sensors, See Trouble Code Charts.
and any of the following codes:
14, 21, 22, 31, or 32




ECM faulty See ECM Resistance check in ELECTRICAL and ELECTRONIC SPECIFICATIONS Section.