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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 10-25-2016, 03:30 PM   #921
E46loverr
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Nvm I drove it around a bit and it cleared up


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Old 10-26-2016, 07:02 PM   #922
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Originally Posted by Solidjake View Post
Not sure why you had to cut wires. The wire harness from the aux fan goes straight into the electric fan.
Sorry to resurrect an older thread, but I'm putting a parts list together and need expert advice.

Is there a consensus on which fan is better--Behr vs Cool Xpert?

Am I correct in my understanding of this that all I have to do is remove the auxiliary fan and replace it with the new electrical fan? No other parts are needed?

(I apologize if these are stupid questions that have already been answered.)
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Old 10-26-2016, 07:23 PM   #923
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I forgot which member it was, but he said the front aux fan can be converted to an electric fan. All you need is the shroud if I'm not mistaken. That will save you money and it works the same.

If you want to buy a fan you can't go wrong with Bosch or Behr. The Cool Xpert I have not looked into.


The mechanic and auxiliary fans are removed and the electric fan goes onto the radiator right in front of where the mechanical fan would be.
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Old 10-26-2016, 07:52 PM   #924
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In fact I would get the Bosch motor/module from a Mazda3 and put it on the E46 shroud. BMW-North discusses this somewhere.

For what it's worth my Coolxpert unit may have been acting up last night. It seemed to be stuck on the highest setting. Restarted the car and then back to normal. Don't know if it's in the fan or it's the lower hose fan switch, which honestly I have not replaced. Fortunately the fan is still under warranty, but that being said I'd go the Bosch route if I need to use the warranty.
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Old 10-27-2016, 12:00 AM   #925
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I went with the Cool Xpert fan because it was slightly cheaper. I'll make sure to take some pictures and post them here once I receive it. Bosch wasn't an option at FCP, and the Behr was listed as made in China, so I guess there's a chance the Cool Xpert is better? (I'm sure they're the same. Either way, lifetime warranty.)

Last edited by lingon300k; 10-27-2016 at 12:01 AM.
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Old 10-27-2016, 06:02 AM   #926
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Let us know how it goes. You'll love how much easier it will be to work on the engine.
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Old 10-27-2016, 08:12 AM   #927
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Shameless plug ... I have a new, unused, still in shipping carton, Behr fan, if interested ... PM me.
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Old 10-27-2016, 11:30 AM   #928
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Prices, links, procedure info, part numbers updated

Last edited by Solidjake; 10-27-2016 at 11:32 AM.
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Old 10-27-2016, 04:43 PM   #929
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Originally Posted by lingon300k View Post
I went with the Cool Xpert fan because it was slightly cheaper. I'll make sure to take some pictures and post them here once I receive it. Bosch wasn't an option at FCP, and the Behr was listed as made in China, so I guess there's a chance the Cool Xpert is better? (I'm sure they're the same. Either way, lifetime warranty.)

if i recall correctly they're both made in China. i went with Behr and i feel pretty confident about it...i price matched it with someone for about 200 flat
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Old 10-28-2016, 08:05 AM   #930
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I was going to say it's not related. Just keep an eye on how the car drives.
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Old 10-28-2016, 01:23 PM   #931
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Anyone know where i can get a bosch in Australia at a responsible price?
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Old 11-02-2016, 07:33 PM   #932
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I went with the Cool Xpert fan because it was slightly cheaper. I'll make sure to take some pictures and post them here once I receive it. Bosch wasn't an option at FCP, and the Behr was listed as made in China, so I guess there's a chance the Cool Xpert is better? (I'm sure they're the same. Either way, lifetime warranty.)
Some pics of the Cool Xpert fan:

http://forum.e46fanatics.com/showthr...804&highlight=
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Old 12-05-2016, 03:17 PM   #933
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Behr china vs coolexpert?
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Old 01-16-2017, 09:37 AM   #934
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I forgot which member it was, but he said the front aux fan can be converted to an electric fan. All you need is the shroud if I'm not mistaken. That will save you money and it works the same.

If you want to buy a fan you can't go wrong with Bosch or Behr. The Cool Xpert I have not looked into.


The mechanic and auxiliary fans are removed and the electric fan goes onto the radiator right in front of where the mechanical fan would be.
Disregard - I decided to buy a new Behr fan and sell my old aux fan

Last edited by Mbryant616; 01-16-2017 at 11:49 AM.
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Old 01-16-2017, 05:37 PM   #935
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Front pusher fan = rear puller fan

Hey so just to contribute to this awesome community and to thank all the members here, I will confirm that the front aux push fan is the same part # as the rear puller fan when they are off the shroud.

Long story but basically my wife's car blew an expansion tank due to the pull fan being intermittent and coolant temp rose a little bit which broke the expansion tank. I did have a spare expansion tank (OE Behr but no spare fan). It was a weekend and I didn't have anyWhere to get parts. I've read the blog mentioned earlier and checked the fans. Low and behold, besides the shroud and the length of the wires, the fan motor, blades and capacitor/resistor box are identical (with identical Part numbers). So I switched the push fan to the back puller fan shroud and issue is solved.

Cheers
John

Last edited by Pangeek; 01-16-2017 at 05:39 PM.
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Old 01-17-2017, 07:47 AM   #936
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I'm a bit confused on autos do we have 2 fans in total the mechanical and another that sits in front on the radiator?

I want to buy a behr electric fan. So do i just need to install that by removing the mechanical? And using the mechanical fan shroud?
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Old 01-17-2017, 11:39 AM   #937
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DIY: Aux/mechanical fan to electric fan swap

Yes the Auto's have two fans.

Aux Fan- Behind the front bumper in front of the radiator.

Mechanical Fan- In the engine compartment behind the radiator.

Remove both fans and install the Behr Electric Fan that has its own shroud.

(The 6MT has one fan, the electric fan inside the engine compartment.)
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