Intermittent High Idle When Holding Clutch In During Cruise - keywords decel decelerate deceleration DTC engine flare highway manual neutral no RPM speed

This PI is being superseded to explain why this concern is a normal characteristic of the current PCM calibration. Please discard PIP3825.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

On rare occasions, the engine RPM may remain elevated if the transmission is placed in neutral, or if the clutch pedal is held down, for an extended period of time while coasting at cruise speeds. If this occurs, it may take several seconds for the engine RPM to decrease once the vehicle comes to a stop. If the engine is turned off, the engine RPM will decrease upon start up. Upon inspection with a Tech 2, there will be no DTCs stored and the actual and desired TP angles will be the same.

If there are no DTCs stored and the SI diagnostics do not isolate a cause for this concern, no repairs should be performed. This is an operating characteristic of the current PCM calibration for improved exhaust emissions, improved downshift engagement smoothness, and to reduce the potential for a driveline clunk.

It is not recommended to place the transmission in neutral while moving at speed or during prolonged coasting while coming to a stop. The vehicle should remain in gear for maximum vehicle control. This could include lower gears for engine braking on deceleration. The clutch should also remain engaged unless the vehicle is stopped or during shifting.

If this issue is encountered, a product report should be submitted by following the procedure outlined in 02-00-89-002D.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.