740i has a high rev [3000rpm] at start up and stays there

the car is a 740i 1995.. at start-up it jumps to 3000rmp and stays there. I am not sure what to make of this and have no idea what could be the cause of it. What can be the cause of the high rev?

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On Sun, 16 Sep 2007 05:40:03 -0000, snipped-for-privacy@gmail.com wrote:

Sticky throttle cable, cold start valve. Does it do anything different at normal operating temperature? At normal temp does it "hunt" run erratically or otherwise behave differently?
You could find someone with a fault code reader to find out BMW charge but an independent might not.
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On Sep 16, 3:48 am, snipped-for-privacy@h-gee.co.uk wrote:

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snipped-for-privacy@gmail.com wrote:

split vacuum pipe into inlet manifold somewhere (there's a mass of them and they can get split or damaged from rubbing) throttle idle position switch (mechanical one somewhere on cable - perhaps near throttle butterfly valve) debris in throttle butterfly assembly air flow meter giving false reading (again - grubby? oily? if earlier type or if heated wire type, then a simple failure) lambda probe?
Any running problems - poor power at any part of the rev range?
David
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your engine is in safe mode now.....
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no_name wrote:

causing the safe mode! What's the fault?
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