What should I check if a cold 260E engine runs fine with a fast response on acceleration but after 70-80C and higher the engine starts to hesitate on acceleration and shake on idle?
Ths.

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1987 MB260E 187K

All right, what about the termo probe, which controling the instant temperature of the engine, located somewhere on the back side of the engine ( I have not find it yet). As I know it should send a signal to the Ignition Control Module. How can it affect the performance?

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1987 MB260E 187K