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Message: <blockquote data-quote="ferry" data-source="post: 6547" data-attributes="member: 2224"><p>Hello Geng, Please help me, i faced a problem with my UDM E36 gear box. Sometime it happened,  2nd gear cannot change to 3rd gear. Its become to free gear. When that time happened, i saw the MPG meter static at 30mpg and the RPM increase to 3.5 and the gear will change to free.  What i have done, change again gear box oil, and change gear box oil filter. But still the same. Previous when i diagnose, O2 sensor fault, but now 3 4 time i check diagnose, O2 sensor fault wont come out. I am not sure O2 sensor still fault or not.  Help meeee.  TQ Ferry <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite4" alt=":mad:" title="Mad    :mad:" loading="lazy" data-shortname=":mad:" /></p></blockquote><p></p>