Engine vibration

Alan Gunn · Post by **Alan Gunn** » Sun Feb 13, 2022 6:50 am

Any cat rattle we got we would put a block of wood above between the body then put a jack under the cat and squash ? it a little.
Hope you understand what i said and pardon my dyslexia.

Themoog2 · Post by **Themoog2** » Sun Feb 13, 2022 6:57 am

Oooo.. Never thought of that. On my cayenne years ago I just dented it with a mallet as one of those was loose too. Good idea.

Themoog2 · Post by **Themoog2** » Sun Apr 10, 2022 8:04 pm

Ok so I returned to the transmission place. Ian the owner drove the car - in a rather spirited way - and also did some stall tests etc. It’s not the transmission apparently.
Then I went off to visit a chap called Paul Spicer in Stevenage who is a bmw expert. He took a look but wasn’t sure so I’m going to let him have the car for a day or so so he can figure it out.
I need to fix this harshness/ vibration as it’s doing my head in and I’ll just buy another car. I also know it’s not right as I had an identical X5 a few years ago along with this one and that was much smoother.

Themoog2 · Post by **Themoog2** » Mon Jun 20, 2022 7:45 pm

Right. It’s been a while and haven’t driven the X5 over 3k rpm so no vibration. Anyway, today I was messing about and noticed that if I turn the AC off (I always have it running) the vibration high up in the rev range is not there - it’s not as smooth as I think it should be but a vast improvement.
So it has to be either the AC compressor / clutch or something that is linked on the same belt - I haven’t had chance to take a proper look yet.
I have noticed over the last few years that the AC does make a thump as the clutch comes on and off and can be felt so maybe the engine mounts are past their best too. Investigation required.

Greydog · Post by **Greydog** » Tue Jun 21, 2022 7:33 am

Check/Change the belt tensioners they have a hard life

Themoog2 · Post by **Themoog2** » Tue Jun 21, 2022 7:54 am

Will do but I don’t think it’s them as they run constantly whereas the AC clutch / compressor doesn’t. I have an AC expert coming today to recharge the daughters Astra so I’ll question him..

Themoog2 · Post by **Themoog2** » Sat Jul 16, 2022 6:43 am

Ok so I've narrowed it down to the ac compressor or drive. I can get a used compressor for £30 or a new one is somewhere between £180-£250.
Is it worth the risk of trying a used one? What do you think?

I reckon I'm going to replace both belts and tensioners in a few weeks when I have the time and if that doesn't cure the vibration then it's off with the pump but that's something my local garage would have to do.

X5Sport · Post by **X5Sport** » Sat Jul 16, 2022 7:59 am

A used one will at least prove the issue, but may have it’s own different problems.

Themoog2 · Post by **Themoog2** » Mon Jul 18, 2022 9:11 pm

Can one of you experts please confirm that this part number is the correct ac compressor for an 01 E53 4.4.M62tu - 64526909628.
I’m finding new ones for circa £200 if that’s correct. Ta

X5Sport · Post by **X5Sport** » Tue Jul 19, 2022 5:35 pm

This is the model list for E53….

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