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1990 Mercedes-Benz 190 - Page 9 Questions & Answers
Hook up for diagnostics
the connector is under the dash on the drivers side to the left of the steering wheel (on us cars)
Aux fan not cutting in when o/heating 1989 190E 2.6Ltr. Fans operate when tested.
Your vehicle should have a viscous fan clutch for controlling the engine temp from overheating. The auxillary fans in front are used when the a/c is on. I would start by spinning the engine fan or viscous fan by hand when the vehicle is off. The fan should show resistance when you spin it. If it doesn't and it just free spins then the viscous fan clutch is bad. Let me know what happens when you spin the engine fan and also exactly how high does the engine temp get. Does it reach the red mark?
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