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The BMW Range
3 Series
E90, E91, E92, E93
Strange outside temperature reading
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<blockquote data-quote="SilverBullet" data-source="post: 602440" data-attributes="member: 11244"><p>what was the rpm when you were driving 120km/h? i believe it should be around 2.5k - 3k, hence the engine is operating at its optimum speed where it is not under stress and does not generate so much heat..when you push it harder to 140km/h, the rpm then goes up to perhaps 4k - 4.5k? the engine will be on higher stress and generates more heat, which in turn could also affect the reading of your outside temp due to the heat probably flowed to the outside temp sensor..hehe just my 2 cents worth theory..coz i noticed on my ride, the outside air temp gets higher and higher the longer i stay stationary at one point (with no other cars around)..i wonder where the outside air temp sensor is located?</p></blockquote><p></p>
[QUOTE="SilverBullet, post: 602440, member: 11244"] what was the rpm when you were driving 120km/h? i believe it should be around 2.5k - 3k, hence the engine is operating at its optimum speed where it is not under stress and does not generate so much heat..when you push it harder to 140km/h, the rpm then goes up to perhaps 4k - 4.5k? the engine will be on higher stress and generates more heat, which in turn could also affect the reading of your outside temp due to the heat probably flowed to the outside temp sensor..hehe just my 2 cents worth theory..coz i noticed on my ride, the outside air temp gets higher and higher the longer i stay stationary at one point (with no other cars around)..i wonder where the outside air temp sensor is located? [/QUOTE]
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Strange outside temperature reading
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