545 RPM problem
07-12-2010, 10:03 AM
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My Ride: Jet Black '05 545i, Sport/Premium Pkg, Steptronic, Adaptive Xenon, Nav, L7, Blue2th, PDC,
Does the CEL (check engine light) illuminate? Any idrive warnings? Check the pressure regulating valve or it could be as simple as a hose coming loose - a vacuum leak somewhere posibly. Good luck
07-12-2010, 10:41 AM
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CEL doesnt illuminate, no infos on idrive. Just when driving up to 2k RPM engine swims over 2 k everyting is ok. When idle also swimming RPMs. I tried To disconnect MAF and engine doesnt want to start. What is Pressure regulatinbg Valve? PCV?
07-13-2010, 07:44 AM
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My Ride: 545 2005 Model. Full spec so happy with as is.(for the moment!)
Similar problem for me and my 545. Asked the dealer to fix on my last two visits but no change.
Would be interested in a solution to this niggle.... anyone?
Would be interested in a solution to this niggle.... anyone?
07-14-2010, 11:30 AM
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07-14-2010, 11:48 AM
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I have also problems with engine start when is hot (operating temerature). It looks like he start wihout some cylinders ant keep starting unless all cyl starts. Normally it starts fast but last time it needs 3-4 sec more.
it looks this same like mine, what is this?
07-14-2010, 05:03 PM
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My Ride: 2004 545i Sport Pak
I have also problems with engine start when is hot (operating temerature). It looks like he start wihout some cylinders ant keep starting unless all cyl starts. Normally it starts fast but last time it needs 3-4 sec more.
http://www.youtube.com/watch?v=iIQq9pAlkhg it looks this same like mine, what is this?
http://www.youtube.com/watch?v=iIQq9pAlkhg it looks this same like mine, what is this?
07-14-2010, 08:27 PM
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My Ride: Jet Black '05 545i, Sport/Premium Pkg, Steptronic, Adaptive Xenon, Nav, L7, Blue2th, PDC,
Do these things have PCV valves? Hard to start when hot sounds sort of sounds like a classic PCV valve issue. Search around, they are cheap and generally easy to change. You may even be able to test it by shaking it. You should hear a ball bearing shake around. If it is all oily and you can't hear the ball bearing shake, it probably needs replaced.
Check this DIY I did last year with detailed pics on page 4:
https://5series.net/forums/topic/853...e/page__st__45
