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Old 10-04-2002, 01:33 AM
john90290 john90290 is offline
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Join Date: Sep 2002
Location: San Diego, CA
Posts: 64
Unhappy Neck brace after w124 downshift to pass.

The car runs great except when i am on the freeway and have to stomp on the gas....downshift...wait..wait....thunk... now I am in third gear watching the speed increase and gas mileage decrease. Smooth as silk in all other normal driving applications.

I have found through my search on this site talk about rear diff. mounts. could this be the poblem?

Also I read about "vacuum modulator and associated hoses and connectors " Where are these things in the merc. manual? where are these things in my car?

1988 300E 171k (700 miles since the head gasket job I did and it runs great!!!)
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