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WHAT IS THE IDEAL RPM ON IDLE?

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Old Jan 14, 2006 | 07:35 AM
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WHAT IS THE IDEAL RPM ON IDLE?-dsc00076.jpg

Hi All, how do you tell if the RPM on idle is set to the optimum for your E60? What is yours? Mine seems to be at 0.6 mark. Is this considered low?
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Old Jan 14, 2006 | 07:40 AM
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Originally Posted by Fireplace' post='224131' date='Jan 14 2006, 06:35 PM
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Hi All, how do you tell if the RPM on idle is set to the optimum for your E60? What is yours? Mine seems to be at 0.6 mark. Is this considered low?

That's normal.

Mine idles at 600 rpm also, when cold at about 800.
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Old Jan 14, 2006 | 07:51 AM
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While something of a simplification, warmed-up idles for a 545i are 500 RPM with climate control off and 700 RPM with climate control on.
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Old Jan 14, 2006 | 08:24 AM
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Originally Posted by Fireplace' post='224131' date='Jan 14 2006, 11:35 AM
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Hi All, how do you tell if the RPM on idle is set to the optimum for your E60? What is yours? Mine seems to be at 0.6 mark. Is this considered low?

According to the SM at Hassel Motors, Freeport, NY, there is no real "normal" rpm at idle. It is controlled by the engine's computer. Of course, wild fluctuations may indicate something wrong going on, however a mininal amount of variation from day to day should not be a cause for alarm.
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Old Jan 14, 2006 | 08:32 AM
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Does the idle rpm have anything to do with how quiet the engine is or how smooth at idle? Thinking that bmw engines are very smooth and quiet at idle more or less because of the lower idle rpm.
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Old Jan 14, 2006 | 08:40 AM
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Originally Posted by BetterMakeWay' post='224171' date='Jan 14 2006, 12:32 PM
Does the idle rpm have anything to do with how quiet the engine is or how smooth at idle? Thinking that bmw engines are very smooth and quiet at idle more or less because of the lower idle rpm.

"Normal" idle, I would tend to believe, should be both smooth and quiet .
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Old Jan 14, 2006 | 09:03 AM
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Other cars have the idle rpm higher like at 800 rpm.
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Old Jan 14, 2006 | 09:36 AM
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THIS IS PERFECTLY NORMAL !!!

if you want higher revs at iddle press the the AC compressor button
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Old Jan 14, 2006 | 09:57 AM
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the question is

Does the car moves when gear is in D Mode and petrol is not applied " same as in the posted pic above "

for me sometimes it moves and sometimes it did not move ?? is our e60 heavy car ?
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Old Jan 14, 2006 | 10:17 AM
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Originally Posted by Memotronic' post='224221' date='Jan 14 2006, 10:57 PM
the question is

Does the car moves when gear is in D Mode and petrol is not applied " same as in the posted pic above "

for me sometimes it moves and sometimes it did not move ?? is our e60 heavy car ?
hmm .. i think i understood what you said and it normal for the car to move when in 'D' mode with gas pedal not hit .. i think its kind of weird of it does not move unless your on an uphill ramp
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