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Big Island X5 owners
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#2
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Where does it seem to come from? Front of the car or underneath? Especially as it shifts gears upward?
What codes do you have? Sent from my SM-A730F using Tapatalk
__________________
"When the Team Chief said.... You're trapped in a hole with nothing but a goat and a slinky, what do you do? Stubby said, I'm not sure but it won't end well for the goat...." ~(Overheard) Last day, Phase 3, Q Course |
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#4
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No codes currently, the noise sounds like it’s coming from the front of the engine. If car is just idling, there’s no noise. As soon as you press on the accelerator the noise appears, not quite a squeal, more like a tick/squeal whine. The belts are new. Is the idler pulley the one located at the bottom front, of the engine. I really appreciate the responses. Engine performance is great. Just this crazy little whine/ticking occurring is driving me crazy.
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#5
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#6
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My idler pully de-laminated just after I bought the car. Would squeal when accelerating.
Eventually there was a lot of smoke from the front. The pully has an inner ring and an outer ring, joined by rubber. When the rubber cracks, the inner spins with engine speed but the outer has tension fromt he belts and spins slower, causing the squealing. When not accelerating, the outer and inner get back to the same speed and stops squealing. |
#7
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Right on guys. Really appreciate the feedback. My X5 has 203,000 miles, so it’s probably time to replace that component. I forgot how invaluable these forums can be.
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#8
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Ok, so I’ve replaced the pulleys and tensioners and the belts and still getting a sequel/screeching on start up. I have no idea where it’s coming from.
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#9
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The pulley Jughead028 mentioned sounds more like the harmonic balancer on the front of the crankshaft - they are well known to fail on the diesel (30d)) cars in hot climates.
The screeching on startup with a 30i could be the SAP? https://xoutpost.com/bmw-sav-forums/...-no-codes.html
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#10
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Sorry, my mistake.
Yes, it was the harmonic balancer pulley. JG |
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