I am not looking forward to a winter where I can only drive 40 mpg and get heat, anything over 2K-2500 rpm results in a hot air mix.
Slowing down results in gremlins in the climate control area , hissing and clicking, and the good old MB furnace blast. ]When I am on the highway, accelerating over 40-50mph, 2K-2500 rm I get dash gremlins and no furnace blast thus I get cold.
I don't think this is a mono-valve issue.
Obviously there is a vac issue, so should I just replace all the dashpots?

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1984 300D

I'd sure test the Dashpots before jumping in...just to make sure that's the
problem!

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'84 300SD sold
124.128