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Message: <blockquote data-quote="ron86" data-source="post: 20925" data-attributes="member: 18732"><p>hi guys..im new here.im facing a few problem wif my e36.asking help from all u guys sifu out there..1-sometimes,when im driving,my gearbox will set to 3rd gear only.and wont change to any gears.what i do is turn the engine off for a few seconds,start the engine,then its ok alredy.this happend once in a week..sometimes wont happend in a month.2-when cold,my engine sound so loud..it sound like "klak..klak..klak.." from the front..the sound will be slower when the engine is hot..when i press the paddle,the sound will  completely gone..goes to a few foreman,they said its nothing juz the timing chain tensioner..is this true?what bother me much is the porblm num 1.i did goes to diagnose my car..it comes out with o2 heating up sensor problm..wat i know is,the o2 sensor was place at our exaust..rite?can this thing effect my gearbox?:hmmmm2:fyi..my 36 is 320i,six potter wif 5hp18 zf auto gbox..any advice would be aprciated..thanks in advance..:wink:</p></blockquote><p></p>