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The BMW Range
3 Series
E46
car shaking while idling without aircond
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<blockquote data-quote="jarance" data-source="post: 555614" data-attributes="member: 21"><p>yes, there are cases when the aircon is ON, vibration is also felt at the steering wheels </p><p>and no vibration when the aircon is OFF.</p><p></p><p>This is due to the additional load of the A/C compressor and the idling speed</p><p>could not be maintained by the ICV. The symptom is usually when you observe that the idling</p><p>speed is around 780 rpm (ac ON) and around 650 rpm (ac OFF).</p><p></p><p>The above case is quite common in most car and your case (reverse) is quite unusual.</p><p> </p><p>Also as pointed by some of the earlier postings, worn out engine mounting is also one of the cause of vibration.</p></blockquote><p></p>
[QUOTE="jarance, post: 555614, member: 21"] yes, there are cases when the aircon is ON, vibration is also felt at the steering wheels and no vibration when the aircon is OFF. This is due to the additional load of the A/C compressor and the idling speed could not be maintained by the ICV. The symptom is usually when you observe that the idling speed is around 780 rpm (ac ON) and around 650 rpm (ac OFF). The above case is quite common in most car and your case (reverse) is quite unusual. Also as pointed by some of the earlier postings, worn out engine mounting is also one of the cause of vibration. [/QUOTE]
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car shaking while idling without aircond
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