(300SE)

Car runs great except for about 30 seconds- one minute, when the car is around 60 degrees C. During this time the car will surge and act as if I am taking my foot on and off the gas. During this time the car is switching over to closed loop operation as I can see the mixture begin to fluctuate.

Its not a big problem as it only happens for a short time and is predictable behaviour.

I suppose I could just live with it, but that would be too easy.

What do the experts think?

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'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E