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General E46 Forum
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Old 12-15-2010, 12:54 PM   #1
Solidjake
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To those running mechanical fans

Make sure your engine mounts are good and regardless, switch to electric fans. This will be number two in a year.

That is all.
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Old 12-15-2010, 01:18 PM   #2
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Engine mounts are way blown by 98k. I'll need to take a pic. There is a BIG difference in height.

Is the switch to electrical fans as simple as removing both pusher fan and mechanical fan clutch, installing electrical fan, then taking the connector originally intended for the pusher fan and "plug n' play" into the new electrical fan then finally calling it a day?
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Old 12-15-2010, 01:23 PM   #3
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Yes. It's plug and play. You use the connector from the aux fan.
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Old 12-15-2010, 02:04 PM   #4
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Can you elaborate a bit? What is happening with fan? And is it a good idea to switch to electrical if your car has auto trans?
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Old 12-15-2010, 02:12 PM   #5
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When the engine mounts start to go bad they allow more "flex" with the engine when you're giving it gas (especially during spirited driving). The fan is pretty close to the engine and when it's worn out a lot the fan will touch the engine and go...
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Old 12-15-2010, 02:14 PM   #6
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And what is the difference with electrical fan then? And still - it it ok to use electrical on auto trans?
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Old 12-15-2010, 02:16 PM   #7
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http://e46fanatics.com/forum/showthr...g+electric+fan
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Old 12-15-2010, 02:25 PM   #8
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And what is the difference with electrical fan then? And still - it it ok to use electrical on auto trans?
Difference is that the electrical is attached to the radiator and not moving around with the engine.

I had my fan blow at 115k miles , needed a new main pulley+belts and got a nice dent in the hood
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Old 12-15-2010, 02:45 PM   #9
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Btw, my mechanic said it's the engine mounts. I'm so pissed off because I told myself two weeks ago that I would get the mounts changed in January. I get that bit me in the ass hard today. 98k on the mounts.

First time my fan went the shroud blew and that's it. Now the same but the radiator was pinched. Not bad honestly since everything could have went.
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Old 12-15-2010, 02:51 PM   #10
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Wow, you scaring me! Going to check my mounts asap. Is there any other sign of worn mounts, other than a hole in hood's material?
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Old 12-15-2010, 02:58 PM   #11
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Rofl, I have three nicks in the hood insulation because of the stupid fans blades. I could make a freaking airbox out of the broken blades!

Honestly I'm not sure. You can of course visually check them, but I think some people put the car in drive, hold the brake down hard and press the gas a bit. If the engine moves a lot or something it's the mounts, but that's what I heard, don't quote me on that.
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Old 12-15-2010, 03:41 PM   #12
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Sorry to hear about your car brotha-man
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Old 12-15-2010, 03:48 PM   #13
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Thanks bro. It will be fixed up today. My mech is giving my the fan blades and shroud for free, same with the engine mounts. Only thing I'm paying for is labor and the radiator. Too bad its too cold and I'm at work all the time to do the work myself, oh well.
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Old 12-15-2010, 04:00 PM   #14
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Huh?
How will the clutch fan touch the engine if its attached to the wp,which is attached to the block.
Only thing a clutch fan can touch is the rad hoses, but the engine mounts will fall out before they allow that much flex.
Converting to an eelectric fan ha only one benefit in my eyes, that is to let off some weight from the water pump bearing to prolong its life.

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Old 12-15-2010, 07:18 PM   #15
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Thanks bro. It will be fixed up today. My mech is giving my the fan blades and shroud for free, same with the engine mounts. Only thing I'm paying for is labor and the radiator. Too bad its too cold and I'm at work all the time to do the work myself, oh well.
I had this happen recently. Its not the fan hitting the engine, its the fan hitting the shroud. Then slightly cracking one of the blades. after awhile the blade will brake causeing it to go off balance and the rest just snap off
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Old 12-15-2010, 07:43 PM   #16
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Engine mounts at 98k. Observe that the new one seems to have a different stud design--it has pointed tips, so do not let that throw you off, but eye ball the height of the rubber part of the mount itself. One of the old ones is worse than the other; I do not remember which one was for which side. I was just left in seeing what happens over 8 years and 98k The replacement is genuine BMW. I should have went with the E9x mounts--better designed.













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Old 12-15-2010, 07:48 PM   #17
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I was told mine was worse. maybe i can check tomorrow to see if they have the ones taken out
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Old 12-15-2010, 07:51 PM   #18
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Mine were split in half and one half was just laying on top of the reinforcement plate!!
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Old 12-15-2010, 07:58 PM   #19
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Sorry to hear Jake... Were you able to keep both the AUX and the new electric fan operational?
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Old 12-15-2010, 08:04 PM   #20
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my mech didnt have a used electrical fan at the moment. my clutch was good so he just put on blades for free. if i can find an electric fan ill put it there anyways.
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