5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
Hi guys, I just acquired a 1994 530i Touring, its in great shape. But a couple of days ago I was driving it and noticed a groaning bearing sound, like a bad a/c pulley or something, at all speeds. On the way home I smelled burning rubber really strong and made it home safely. I havent driven it since, I took both belts off and all pulleys spin free, and make zero noise. So I put the belts back on and started it. I can feel the vibration of the noise with my hand on the oil filter housing. I can also feel it in the large hard plastic duct that runs right next to the power steering pump. Its a large diameter hard plastic duct, it looks like an air cleaner duct pipe, it runs right up into what looks like the frame or something. Anyways, could this groaning be my oil pump making noise? Im afraid to drive it as it sits. Thanks
It's really hard to diagnose from where I am matey !!
What is the engine temp like? Does this noise occur with th A/C on AND off?
If the oil-pump was making this noise then I would guess that it may be failing, oil-pressure would drop substantially !!
Eso es todo! Please press the "REP" button if you are happy with your response/answer...
The temp is fine. No problems there. The noise I am hearing happens at all times, at idle and on up through the rpm range.
Ive noticed that alot of folks on here are located within european countries. Me being in the USA, is that unusual on this forum?
I will pull it in to my shop this weekend and begin the process of elimination. I was just wondering if anyone had an idea that would shorten my searching time in finding the culprit. Either way I will find it this weekend.
Yes, at driving speeds, the pitch gets higher. At idle its a low grumble. I dont hear it at all at rpms higher than about 3000, but its audible from idle, on up to about 2500-3000. And as you were asking, it does change pitch with revs.
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