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E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

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Old 04-22-2008, 10:27 PM
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Soviet1942 Soviet1942 is offline
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Mein Auto: 1987 325is
AC Resistor Woes - We all know this has been talked about a million times

Disclaimer, YES I did use the search bar.

Okay, I have come to a conclusion that I need to replaced my AC Resistor, thing is how? I have looked in BMW DIY, Google, other forums and haven't really found a write up. I did find ones on how to replace the final stage resistor but I do not have that one.
I read that sometimes cleaning the resistor with a solution as WD-40 could fix this issue, is that true?
I also read on a yahoo forum:

Quote:
....that resistor [OEM e36] is undersized physically in my mind. It gets damn hot. You do not have to use the BMW resistor, the resistance is printed on the side. Buy two other aftermarket resistors that are the same wattage rating but twice the resistance. Wire them in parallel and the resulting resistance will equal the stock value but you will get double the wattage rating. ( WTF?! )They will run cooler and last forever. Heat is the death of electrical devices.
I agree with all that Jim said, with one clarification/addition:
I would suggest finding out why the stockers are burning up and fix that first, and then add the better resistors. Just doing the resistors would eliminate that component as the weakest link, but what would be the next weakest link, and will the high current burn it up now? I suspect (hope) the next weakest link would be the fuse (it is the stock value, right?), but if it were to be the wiring, there is the slight, but nightmarish, chance of a dash fire.
Anyone done that before? That would be a great write up if anyone has done it. I wouldn't mind trying it out but I would first have to know how to replace/clean an OEM resistor .

Thanks
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Old 04-22-2008, 10:38 PM
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Soviet1942 Soviet1942 is offline
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http://www.bmwe36blog.com/2008/01/17...fan-speed-diy/

Alright, found a DIY...I think. It explains both in one deal? Is that right?
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