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The BMW Range
3 Series
E46
e46 325i gearbox temp sensor
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<blockquote data-quote="astroboy" data-source="post: 250152" data-attributes="member: 4527"><p>Auto gearbox will heat up beyond normal temperature when your auto clutch packs start to slip. Such heat will boil and cook the ATF and it will turn black due to the excessive carbon deposit.</p><p></p><p>Most auto cars inclusive of BMW has 2 pressure pumps to force the clutch pack onto the flywheel. Low pressure pump is to facilitate shifting. Weaken pumps will cause clutch pack to slip and ATF temperature will raise.</p><p></p><p>BMW gearbox is designed to slip more compare to JDM so the shifting is smoother. Thus wearing the clutch packs faster but BMW clutch packs has more clutch linings than JDM. Since the clutch packs is a wear and tear item, there's limited life span to all gearbox and BMW GB is not spared. Its a matter of time, your day will come. Some will experience it earlier than others. If not 3 years, then it will be 5 years. Like death, something we cannot escape.</p><p></p><p>I have friends been avoiding auto BMW for this reason.</p><p></p><p>Do u have an ATF dipstick? If JDM, I can tell very easily.</p><p></p><p>If I were u, I will wish for a faulty temp sensor. Otherwise, jia lat lio..</p><p></p><p>Can give us a brief intro on your gearbox? Is it still on "LifeTime" ATF? Have u replace them before? When? Using what ATF? done at which workshop? Is your 2004 E46 325i a CBU or CKD model?</p></blockquote><p></p>
[QUOTE="astroboy, post: 250152, member: 4527"] Auto gearbox will heat up beyond normal temperature when your auto clutch packs start to slip. Such heat will boil and cook the ATF and it will turn black due to the excessive carbon deposit. Most auto cars inclusive of BMW has 2 pressure pumps to force the clutch pack onto the flywheel. Low pressure pump is to facilitate shifting. Weaken pumps will cause clutch pack to slip and ATF temperature will raise. BMW gearbox is designed to slip more compare to JDM so the shifting is smoother. Thus wearing the clutch packs faster but BMW clutch packs has more clutch linings than JDM. Since the clutch packs is a wear and tear item, there's limited life span to all gearbox and BMW GB is not spared. Its a matter of time, your day will come. Some will experience it earlier than others. If not 3 years, then it will be 5 years. Like death, something we cannot escape. I have friends been avoiding auto BMW for this reason. Do u have an ATF dipstick? If JDM, I can tell very easily. If I were u, I will wish for a faulty temp sensor. Otherwise, jia lat lio.. Can give us a brief intro on your gearbox? Is it still on "LifeTime" ATF? Have u replace them before? When? Using what ATF? done at which workshop? Is your 2004 E46 325i a CBU or CKD model? [/QUOTE]
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e46 325i gearbox temp sensor
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