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Discussion Starter · #1 ·
I found a wire to the fan disconnected when cleaning the engine. I plugged it back in and noticed no change in the coolant temp guage (80 and stable) over the next week. Engine performed as before, fan never really came on much.

Just to make sure, I asked the a local MB dealer to check the coolant temp and engine running temp. Dealer said the checked and the car is running within specs. Took no action.

BUT, when I get the car back from the dealer I notice that the fan runs a lot more now. In fact, when the car gets up to 80 degrees on the gauge, the fan runs pretty much all the time.

Is this normal?
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