Thanks for the ideas. I'll clear the codes and shoot some compressed air in there.

The parts they replaced are:
124-464-02-28 Contact Ring $108.81
126-464-09-43 Contact Piece $47.80

Labor $169.00

I was told by three independants that installing the above parts requires a special tool which they didn't have. All recommended I go to the dealer. I'm hoping any remaining work can be done by myself or an independant.

Thanks!
Gebhard

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'88 300E 265K
'91 300TE 155K