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  #1  
Old 02-26-2002, 09:01 PM
nikofthenorth
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Unhappy 94 e320 blower resistor

Hi Im new at this so please bear with me, my blower works intermittently,its frustrating not to mention cool, my dealer said it was the blower resistor. where the heck is this animal located and
is it serviceable
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Old 02-27-2002, 12:19 AM
renok7's Avatar
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Join Date: Nov 2001
Location: Montréal
Posts: 95
Your mechanic probably meant the blower motor regulator switch. It's located underneath the blower motor and isn't serviceable. A new one is about $340 (Canadian) + TAXES and 1 ½ hours or so of labour.
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Last edited by renok7; 02-27-2002 at 12:45 AM.
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Old 02-27-2002, 01:52 AM
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Join Date: Feb 2002
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I had the same problem last summer. It started working intermittantly and then finally quit. I found it to be the blower regulator which is mounted under the blower motor. The regulator is a molded plastic part (1"x1"x1/2") with wire terminals. It is a "linear" regulator which means it has to dissipate the heat when the blower is turned down to slower speeds. The blower draws a lot of current so it can get very hot. It is mounted to a heatsink and the blower blows air on it to cool it down. I could not bring myself to pay $300+ for this part that should cost less than $10, so I went ahead and designed my own (ok, I'm an elctrical engineer). Instead of the orginal "linear" switch that overheats, I designed a microprocessor controlled "switching" regulator that is cold at any fan speed. It works great and it has been running since last summer with no problems. Maybe I should start making these and sell them for $99? You can replace it yourself if you are handy, but figure several hours if you haven't done it before. A lot of moldings, windshield wiper, etc. have to come off to get to the blower motor. Good luck.
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