CVT Surge at Steady Speed: Why Your RPM Bounces

Experiencing a rhythmic CVT surge at steady speed? This common drivability issue, felt as a 'yo-yo' sensation with a bouncing RPM needle, is rarely a transmission failure. The root cause is often a conflict between the engine and transmission computers. A primary culprit is a subtle engine misfire, too minor to trigger a check engine light, but enough to disrupt torque output, causing the sensitive Transmission Control Module (TCM) to constantly over-correct pulley ratios. Another cause is corrupted adaptive learning tables in the TCM, especially after a 12V battery replacement. The correct diagnosis involves monitoring live 'Misfire Counters' with an OBD2 scanner to differentiate between an engine fault and the need for a TCM adaptive relearn procedure, avoiding guesswork and unnecessary parts replacement.,
tags:
cvt surge,
rpm bounce,
steady speed surge,
transmission problem,
engine misfire,
tcm relearn,
obd2 diagnostics,
drivability issue,
continuously variable transmission,
adaptive learning

Видео CVT Surge at Steady Speed: Why Your RPM Bounces канала CarAraC