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Richard Lankford Posted on Jul 11, 2014
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Why does aux fan on 1992 mercedes 400e not shut off

Aux fan comes on as soon as you start engine and fuse and wires around fuse get very hot

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steve

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  • Mercedes-Benz Master 3,718 Answers
  • Posted on Jul 12, 2014
 steve
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Sounds as if the timer relay for the fan is at fault , get a auto electrician to check this out

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Where is a 1992 Mercedes 400e ecu located

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Change waterpump on 1993 mercedes 400e

ok, start working, take the fan first, the the belts and pulleys, then the water pump, male sure you replace the thermostat, and refill coolant level. let engine run until all the air comes out of the system.
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Mercedse benz 93 400E, overheated Ibeleve the Condensor fan dont go on when I terun the A/C on

probably fan clutch . but if your ac is on the fan should be on to. fan relay is located under the fuse box driver side under the hood. remove the fuse box and u will find the relays under. but there is a fan switch for the fan between the relay and the fan . . they even cheeper less than 20 bucks
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I need to find the location of the fuses for the fan motors on a Mercedes Benz 400E

I have an owner's manual for this 124 body sedan if you would like a copy. email me at [email protected] and I will send it right out. The fuse descriptions start on page 86.
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I need a diagram for the firing order on a 1992 mercedez 400E, where can i get one?

For 1992 Mercedes Benz 400E (124 Chassis) 4.2 liter DOHC V-8 (119) check this...

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Hope helps (remember comment and rated this).
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I have a 92 mercedes 400e that blow hot air, the freon is full and the blower works.

I would check and make sure that the AC compressor clutch is kicking in. If it is then you are probably looking at a restriction somewhere in the system.
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Runs for 20 minutes, gets hot and shuts down. Still has spark

I had the same problem, took to a benz dealer, it was the fuel pump relay, cost for repair $200.
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1992 mercedes benz 400e

It is a straight forward procedure, but getting it around the fan is tight. Just put a wrench on the belt tensioner pulley, and pull up on it to loosen the belt. While holding the tensioner up, slip the belt off. Just make sure you draw a diagram of the belt routing, before taking it off.
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Mercedes benz 1992 190E

Lift the hood. Just below the screen, opposite side from battery, you'll see a plastic cover shielding the engine management, abs control box etc. If you search around there after removing the shield/ cover you will find a relay with a fuse plugged into the top of it. This is the pump / system relay.

Cheers John
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