Good afternoon. Car is a 1989 560SEL, 175K miles. Car has been in the shop for the third time in 3 weeks. Problem is a strong vibration in the front end, experienced during braking from 45 - 50 mph. The entire front of the car shakes and wobbles, but only during braking. The upper ball joint assembly, including the bushings and lower ball joints were replaced, and the problem remains. All four rotors and pads all around were replaced 50 miles ago.

Mechanic now reports the drivers side brake rotor is blue, and he has changed the passenger side caliper with a "used but good" caliper he had in his shop.

I was wondering if this could be related to the anti lock brake system malfunctioning? Does anyone have any ideas?

I am out about $1,000 USD so far, and I am quickly losing confidence in my mechanic's ability to diagnose the problem.

Thanks for the help. I am at the end of my rope, and my checkbook.

MFG
John

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1989 560SEL (172k)
1989 325IC (122K)
2004 Suzuki Volusia LE (3500 miles)
2005 Yamaha Road Star (20 K miles)