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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 06-11-2011, 03:06 PM   #181
Solidjake
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Yes it does turn on without the ac.
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Old 06-11-2011, 03:26 PM   #182
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[QUOTE=Solidjake;13266121]Yes it does turn on without the ac.[/QUOat what speed does it reach woth it off? And at a higher temp, is it thd same speed, or faster.
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Old 06-11-2011, 03:56 PM   #183
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Faster. You can feel it pick up speed when it needs to. I have zero issues with the swap within the past three weeks, even driving when it was 100 and humid out and driving the car hard.
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Old 06-11-2011, 04:46 PM   #184
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Faster. You can feel it pick up speed when it needs to. I have zero issues with the swap within the past three weeks, even driving when it was 100 and humid out and driving the car hard.
Thanks! Now im more convinced on doing this swap.
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Old 06-11-2011, 09:42 PM   #185
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And now we can stop worrying our hood will look like this:

Last edited by Nervous; 06-12-2011 at 10:42 AM.
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Old 06-12-2011, 12:06 PM   #186
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^ My hood has two of the smaller one that is by itself in your pic.
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Old 06-14-2011, 03:09 AM   #187
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Hey Fellas,
Came across this thread and I see all is well with the electric fan swap. Quick question

I see KPeng swapped in a BOSCH electric fan and NERVOUS swapped in a BEHR electric fan. Anyone care to chime in on which electric fan is better ??? For example which unit do you think has a better build, quality, longevity etc...

Is the BEHR unit also plug and play ???
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Old 06-14-2011, 08:04 AM   #188
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Behr unit is plug and play as well. I don't see how it can't be if it's the same part.

Both Bosch and Behr are OEM units. Make sure to get one of these two, not other companies like Hamburg-Tecnik, etc.
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Old 06-14-2011, 10:08 AM   #189
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^ second that. Plus, behr is a bit cheaper.
BTW, I am driving with electrical fan for several days already and no issues with temp (monitoring it via obc func 7.0). Never saw it above 93C (with mechanical fan I saw it to be 96C, but this maybe due to a bag of leaves I removed from the front of the condenser, or because the ambient temp is a bit lower now in MD). Anyway, looks very good.
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Old 06-14-2011, 10:12 AM   #190
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Do you notice the car being more responsive? I know I do.
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Old 06-14-2011, 10:47 AM   #191
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I got a Bosch unit from AutohausAZ. Still need to pull the front bumper to pull the other fan out.
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Old 06-14-2011, 10:49 AM   #192
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Quote:
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Do you notice the car being more responsive? I know I do.
I am always careful in judgements about these things, since it is very subjective and biased opinion usually. People feel what they want to feel therefore "placebo effect" exists in this world. However, I think, yes, there is a little difference in responsiveness, but it is not huge if at all exists.
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Old 06-14-2011, 11:13 AM   #193
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Thanks for the heads up on the fans guys. Much appreciated. I'm sure that the small gain in responsiveness isn't in your head. Less weight on the pulleys, should translate to more efficiency, hence a little more power. I felt the same thing when my power steering went out and the power steering pulley was spinning freely without being connected to the shaft, because it sheared into two pieces. This also translated to less strain on the pulley system, and the car felt a bit more responsive. I almost didn't want to fix the power steering. lol
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Old 06-14-2011, 11:20 AM   #194
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Yup, the absence of the drag on the engine would be the biggest plus and the lack of the aux fan in the front being on (which it feels like it's sucking the power from your car when it's on)
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Old 06-14-2011, 11:28 AM   #195
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Yesir. I hate the sound it makes too.

I'm really looking forward to doing the swap. I have to get in there anyway to swap out a bad thermostat, might as well do a little improving.
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Old 06-14-2011, 11:29 AM   #196
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And make life easier when working on the belt system, just slide the fan out
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Old 06-14-2011, 11:34 AM   #197
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Ohh yeah. No doubt. Yet another reason why I'm doing the swap. I really don't like having to have a special tool to get in there. This is probably one of the best mods to do to our cars
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Old 06-14-2011, 12:05 PM   #198
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You're welcome.

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Old 06-23-2011, 11:33 PM   #199
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Update: Drove the car hard for a good hour the other day on a "roadcourse" with no issues. 98 to 100 degrees outside.
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Old 06-24-2011, 12:22 AM   #200
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If I had to guess, I'd say that the risk of excessive temperatures would be greater when stopped/stuck in traffic then when the car is moving. At least in the M3, my temperatures are a good 40 degrees higher when stuck in traffic compared to moving at a decent pace. Even if I beat the **** out of the car, my temperatures are still lower than when I'm sitting in traffic. I suspect I'd be able to delete the fan altogether if I never had to worry about traffic.
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