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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 03-14-2013, 01:46 PM   #281
Dave1027
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Very interesting thread. Begs the question, why wasn't the car this way from the factory?
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Old 03-14-2013, 03:54 PM   #282
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Hey Jake do we need to order 4 of the expanding rivets to do the swap, or is this if you break the ones as you remove them?

I have the fan, arrived today, and was curious if I need to swing by the dealer for these parts before the swap or not.

Thanks.
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Old 03-14-2013, 10:07 PM   #283
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Hey Jake do we need to order 4 of the expanding rivets to do the swap, or is this if you break the ones as you remove them?
I have the fan, arrived today, and was curious if I need to swing by the dealer for these parts before the swap or not.

Thanks.
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Old 03-15-2013, 11:37 AM   #284
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Originally Posted by FenderGuy05 View Post
Hey Jake do we need to order 4 of the expanding rivets to do the swap, or is this if you break the ones as you remove them?

I have the fan, arrived today, and was curious if I need to swing by the dealer for these parts before the swap or not.

Thanks.
You'll only need those if you break them. I didn't break mine. If you take a few minutes and you're careful in prying them out with pliers and screwdrivers and stuff like that, you can avoid breaking them. Just in case I did break them, I was able to find some at Advanced Auto that were almost the exact same thing. I just returned them later.
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Old 03-15-2013, 12:30 PM   #285
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You'll need them if you break them (which will most likely happen)
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Old 03-15-2013, 12:33 PM   #286
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Where are the for exactly? Removing the fan shroud only took removing a torx screw and one rivet.

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Old 03-15-2013, 12:34 PM   #287
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Holds the center air duct in place.
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Old 03-19-2013, 12:34 PM   #288
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Got the electric fan put in in place of my mechanical fan on Sunday. Going to have my aux fan pulled in the next couple weeks. No issues at all, car runs great and the fan will make DIY jobs so much easier. I always dreaded removing that fan. Using my OBC, coolant/engine temp was running smoothly at 93-95 for my entire test drive once warmed up.
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Old 03-19-2013, 04:57 PM   #289
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Got the electric fan put in in place of my mechanical fan on Sunday. Going to have my aux fan pulled in the next couple weeks. No issues at all, car runs great and the fan will make DIY jobs so much easier. I always dreaded removing that fan. Using my OBC, coolant/engine temp was running smoothly at 93-95 for my entire test drive once warmed up.
So apparently the reason for the mechanical fan was for the transmission rather than the engine. My attempts at tranmission temperature have failed. We may not have access to it after all.
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Old 03-19-2013, 05:20 PM   #290
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Not sure what the big deal is with removing the mechanical fan, mine was a breeze to remove when I replaced it with the electric fan

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Old 03-20-2013, 11:40 AM   #291
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So apparently the reason for the mechanical fan was for the transmission rather than the engine. My attempts at tranmission temperature have failed. We may not have access to it after all.
Honestly, I figure there are coolant lines running to the transmission, so as long as the engine temp is alright, the trans temp should be too.
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Old 03-22-2013, 10:54 AM   #292
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I bought the Behr fan, actually I'm on my second, part # 8EW 351 038-391 ECS Tuning # 2568885 ( http://www.ecstuning.com/BMW-E46-330...Fan/ES2568885/ ) . So my question is that as I have seen detailed in this diy I removed the pusher auxillary fan and put this fan behind the radiator plugged it in and the first fan worked for 3 days then stopped. I threw an e fan code of 19 7d on my peake reader. I bought the first fan from a guy here on the forum and since it really isnt his fault the fan quit working I just chalked it up as bad luck with nowhere to return it. I then bought one from ECS Tuning and nothing. what do think is wrong?

I checked fuse and wiring could it be that I have an auto? Is there something else i should look for?

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Old 03-22-2013, 11:37 AM   #293
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So apparently the reason for the mechanical fan was for the transmission rather than the engine. My attempts at tranmission temperature have failed. We may not have access to it after all.
I wonder if anyone will be able to get the transmission temp after MOD and compare it to someones trans temp with the mechanical fan. Need both parties to have infared temp reader gun perhaps?
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Old 03-22-2013, 11:46 AM   #294
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I then bought one from ECS Tuning and nothing. what do think is wrong?
What's that mean? You installed it, and let the engine idle until it started to go into the red zone or ? The fan won't turn if, for example, you turn the a/c on. Did you clear the codes after you installed the new fan and is there a fan code still being thrown?
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Old 03-22-2013, 01:02 PM   #295
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What's that mean? You installed it, and let the engine idle until it started to go into the red zone or ? The fan won't turn if, for example, you turn the a/c on. Did you clear the codes after you installed the new fan and is there a fan code still being thrown?
No i didn't let it overheat but the obd II 7.0 function showed 100 degrees C. I then shut the car off. I didn't clear the codes. I thought once the car registered a new fan it would clear itself? Yes it still throws a code. The first fan I installed was from a guy on the forum. It worked for 3 days, It ran constantly. it only turned off once I turned the car off. then quit working at all while I was cruising down the highway. I thought It was just a bad fan.

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Old 03-22-2013, 01:51 PM   #296
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The fan is activated by the car computer based on these inputs:

* Coolant temperature measured at the lower radiator hose
* Calculated catalyst temperature
* Vehicle speed
* Battery voltage
* Air Conditioning pressure (calculated)

You should clear the codes with your Peake reader. It's possible the sensor in the lower radiator hose is acting up - that's one of the inputs the computer uses to turn on, as it senses the temperature of water exiting the radiator. Check a wiring diagram, you may be able to short the wires together, simulating the switch closing, to see if the fan will turn on. The little black box that sits on top of the radiator, on the passenger side, has also been known to fail.
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Old 03-22-2013, 02:47 PM   #297
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[QUOTE=Sansho;15275186]The fan is activated by the car computer based on these inputs:

* Coolant temperature measured at the lower radiator hose (new with only 8K miles on it)

* Calculated catalyst temperature

* Vehicle speed

* Battery voltage-new battery as of August of last year

* Air Conditioning pressure (calculated) my a/c compressor is not running because my mechanical tensioner sheared its bolt when my mechanical fan blew apart! Since its been cold I haven't fixed it yet.

Last edited by TheFix330i; 03-23-2013 at 09:54 AM.
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Old 03-26-2013, 01:24 AM   #298
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Bosch vs Behr. Which is a better fan?

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Don't know if Bosch is better than Behr. Bosch is an OEM supplier of the fan, Behr may be too.
How safe is installing a 'used' Electric Fan?
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Last edited by delmarco; 03-26-2013 at 01:39 PM.
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Old 03-27-2013, 08:14 PM   #299
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If it came off a running car why wouldnt it be safe ^
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Old 03-27-2013, 11:14 PM   #300
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If it came off a running car why wouldnt it be safe ^
Jake said these fans last around 130,000 miles before the bushings fail.

The used one I was buying was coming off a car with 132,000 miles.
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