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The BMW Range
3 Series
E46
E46 318i Problems
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<blockquote data-quote="aidilj" data-source="post: 558168" data-attributes="member: 20536"><p>The thermostat was removed? Thermostat operates to get the engine to warm up faster by only allowing coolant to flow when it is hot enough. Thermostat not opening means engine gets hot or if stuck at open will make it longer for the engine to warm up to its optimum temperature.</p><p></p><p>read here : <a href="http://auto.howstuffworks.com/question248.htm" target="_blank">http://auto.howstuffworks.com/question248.htm</a></p><p></p><p>Is the RPM pulsating like below? Do diagnostic first, mine is like below and its the O2 sensor</p><p></p><p>[video=youtube;NXSGM3iJ1Mg]http://www.youtube.com/watch?v=NXSGM3iJ1Mg[/video]</p></blockquote><p></p>
[QUOTE="aidilj, post: 558168, member: 20536"] The thermostat was removed? Thermostat operates to get the engine to warm up faster by only allowing coolant to flow when it is hot enough. Thermostat not opening means engine gets hot or if stuck at open will make it longer for the engine to warm up to its optimum temperature. read here : [url]http://auto.howstuffworks.com/question248.htm[/url] Is the RPM pulsating like below? Do diagnostic first, mine is like below and its the O2 sensor [video=youtube;NXSGM3iJ1Mg]http://www.youtube.com/watch?v=NXSGM3iJ1Mg[/video] [/QUOTE]
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