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Showing results for tags 'bmw 540i e39'.
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Hoping someone has some ideas. I have a 2001 540i bought with broken chain guides. To cut a long story short, I replaced guides, did not use timing tools, then as car had weird behaviour, redid timing this time using proper tools (the timing chain was off by 1 link) So engine now sounds good (it did before retiming), BUT after getting warm with revs > 1500 the engine stalls with a terrible mechanical noise (got me worried first time). Then restarts and engine is all sweet until next time it stalls I thought it may be a failing bearing in the alternator/power steering pump, but cannot understand why it stalls the car. Removed drive belt and all bearings are good. Have run the car a short time without the serpentime drive belt and it reved happily to 5000rpm. Put belt back on and same behaviour as previously, stalls with a mechanical noise The car has been at 2 different mechanic's, one our local Bmw guy but no suggestions for what needs fixing. The Bmw guy recorded Vanos fault Bank 1/possible cam sensor fault, but his was before i redid timing Any suggestions for what i need to check?
