Mechanics

5 CYL TURBO DIESEL MOTOR

1984 Mercedes Benz 300dt

Engine Performance problem
1984 Mercedes Benz 300dt 6 cyl Two Wheel Drive Automatic 300000 miles

When ac on at idle motor cuts off, oil presure reads at 20 instead of 30 when ac is not on and motor shakes quite a bit more. AC otherwise cools fine while driving.
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Jmongare
July 2, 2009.




I believe your air-conditioning pump is going out causing a excessive drag on the engine, it will still work, just overloading the engine.

Dr Loot
Jul 25, 2009.


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