Hi
So I take my car in to a BMW specialist to repair my faulty parking sensors.....this was done by pushing in one of the plugs which had come out. They were working fine, thought my problems were over....................how I was wrong!!!
Before I took my car, the main guy spoke to me for an hour about horror stories he has had while he worked at dealers (fobbing off customers etc etc). I finally get to drive my car and find at regular times I can hear a very loud humming noise from the back of the car. First I thought it was my stereo as it sounded like the hum of a stereo but it wasn't that. Then I realised it happened when the air con was turned on. I took the car back in today and he drove it and said without the air con on he can feel vibrations very slightly coming through the pedals and with the air con on its vibrating the whole bodywork.
After much stress throughout the day wondering whether it is a major problem, I go back to my car. Apparently after speaking to a guy at Stephen James (one of his contacts) he says one of the bushes supporting the engine mount has broke and so when the air con goes on, because it makes the engine decrease in power it causes major vibration throughout the bodywork.
Seeing as my car in an 03
MCS, 53,000 miles and I drove to Glastonbury (nasty ramps and fields), is this feasible? This fault has never happened to the car before so I guess its wear and tear. Basically he had it to repair my parking sensors and then just by coincidence I get major vibrations throughout my car after I leave there. I want to think he's right and he has said the part will only cost £28 or £42 depending on which bush it is plus one hours work, but any advice on this would be great!
Thanks
Inga
UPDATE - car went back today and it isn't the engine mount. This has already been replaced so it isn't this. Apparently they are now going to strip my car



and see if they can find the problem. They say it could be anything - broken bracke, something toucking the fan. I looked under the car and where I'd been to Glastonbury there was loads of mud underneath.

Does anyone have any suggestions on what this could be as I'm a little worried what it is.
When not using the air con and driving smoothly, it drives fine.
Any advice is greatly appreciated.
Thanks
Inga