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E-Class (W124) 1984-1995: E 260, E 300, E 320, E 420, E 500 (Includes CE, T, TD models)

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Old 12-20-2010, 11:20 AM   #1
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Drives: 1995 E320 wagon
Blower motor doesn't work (heater)

'95 E 320 wagon

My mercedes tech is diagnosing the problem now. We took out the hampster cage (blower motor under rain you tray) and tested it independently -- it works.
Next we got the refurbed control panel and installed it...nothing, no power to the blower. Checked the fuses and relays and all seem to be working.
Guess the next step is multimeter the harness for broken wires? I wish it was an easy fix, so cold driving around with no heater.
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Old 12-20-2010, 11:28 AM   #2
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Have you checked the 30amp aluminum strip fuse?

Because I'd put money on that being your problem.

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Old 12-20-2010, 11:54 AM   #3
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...I love you! That was it!
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Old 12-20-2010, 05:04 PM   #4
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...I love you! That was it!
sssoooooo i'll just assume you have heat again

congrats!
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Old 12-20-2010, 05:10 PM   #5
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Yeah, when you connect the broken aluminum strip back together, it worked. Have to get the proper strip soon though.
Thanx again..HEAT!
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Old 12-27-2010, 06:30 PM   #6
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I think you are using that term " my Mercedes tech too loosely". You need to find someone who knows what he is doing and save a little money.
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Old 12-28-2010, 11:23 PM   #7
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If you blew the 30 amp fuse the fan is drawing too much current & is on its way out I'll bet....
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Old 12-29-2010, 11:29 AM   #8
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If you blew the 30 amp fuse the fan is drawing too much current & is on its way out I'll bet....
Good thinking but not necessarily so. German fuses are a lot like beer cans. If you bend them back and forth enough times they will snap. When current flows through a fuse, it acts like a tiny resistor. The heat produced during current flow causes the fuse metal to flex. As the metal cools it relaxes. This constant flexing back and forth eventually causes the metal in the fuse to snap. In most cases there is nothing wrong with the circuit. All you need to do is replace the fuse with a fresh one, and the flexing begins again.
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Old 12-29-2010, 11:29 AM
 
 
 
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1995, 2001, 320e, blower, change, class, doesnt, e320, e420, heater, mercedes, motor, replacement, w124, work



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