X2. When all else fails, check the compression.

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1981 300TD 310k miles
1970 280sel 172k miles
1966 230 Fintail 162k miles

"Where are we going? And why am I in this hand basket?"

Thanks everyone, PROBLEM SOLVED!!! I installed all new mounts again using a German brand mount. I installed all 4 mounts and left everything loose until the car was on the ground. I started the car for 10 seconds shut it off and tightened everything up, to my surprise the damn thing shook even worse. After being completely pissed I decided to start messing with it while it was running and I loosened the cross-member mount and BAM no more shaking. That damn center mount was the problem all along even though it was new. After some final tuning and idle adjustments the car runs like new. And yes it does only have 85000 miles on it... Thanks again everyone for your input and feedback.

Then you have a rare treasure that should literally last you several lifetimes. Look after it. Can you explain what you mean by all four mounts? There are only four to my knowledge. Two engine mounts and a transmission mount? What's the third? And what brand did you use? I probably need to do mine soon and I'd like to get ones that work.

- Peter.

__________________
2021 Chevrolet Spark
Formerly...
2000 GMC Sonoma
1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles.
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S

Of course yes. I'd completely forgotten about that one.

- Peter.

__________________
2021 Chevrolet Spark
Formerly...
2000 GMC Sonoma
1981 240D 4spd stick. 347000 miles. Deceased Feb 14 2021
2002 Kia Rio. Worst crap on four wheels
1981 240D 4spd stick. 389000 miles.
1984 123 200
1979 116 280S
1972 Cadillac Sedan DeVille
1971 108 280S