Surging idle, I'd check for an intake leak.

 

Yeah, that.

 

 

Yup, it's almost like they use poor service as a means of forcing you back so you can but a $40 T-Shirt or $20 key ring while you're stuck waiting.

 

M8s use a plastic manifold which has a tendency to deform.probably excessive heat from sitting in traffic.

 

 

Only $85 an hour? Where do you live? I'm moving there....

 

Better yet, learn to do it yourself.

 

Started having the same issue a few weeks ago on my 17 RGS & they found both head gaskets were seeping. Just over 20,000 miles. Replacing with Cometic head gaskets & some over goodies.

 

Yeah, if I can't fix it myself, I sell it or salvage it.

Had a company car in a previous job that always went to the dealer...what a bunch of idiots..."ASE Certified" technician...might as well print that diploma on toilet paper.
> Grinding noise/vibration coming from the right front wheel.
> Intensity varies with speed...slower/quieter...faster/louder.
> Put car in neutral and roll...same deal.
> Shut car off and roll...same deal.
If you've ever driven/fixed a car with a bad wheel bearing, which I have, you know right away this was a bad bearing.

The ASE Master Mechanic took the transmission apart, replaced some output gear and gave it back to me EXACTLY as I gave it to them...grindy/noisy..and told me it was "normal" when I returned to complain.
I had to fight to get the service manager in the car for a ride before they would try again...which they did...and the solution was....drum roll....new wheel bearings.
This was a fleet car folks, the company I worked for bought ~50 cars every 3 years...huge important customer right...and the dealer treated me like an idiot backyard mechanic that didn't now anything about cars.