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MrBloink
03-19-2009, 08:36 AM
Hi,
Last night i was racing my friend with a 2002 A6. About halfway through the race i herd a smashing noise coming from my engine so I stopped immediately. When I popped the hood i noticed plastic everywhere. It turns out that it was one of the fans for the radiator. I was wondering how I can go about replacing it. I would like to finnish the race. Haha

Thanks,
Miles

A3toB5
03-19-2009, 09:57 AM
which fan is it ?

myers1.8TQ
03-19-2009, 10:02 AM
Fan on the driver or passenger side?

My guess is on driver.

thopp00
03-19-2009, 10:14 AM
can the mechanical fan be replaced with an electric one? mine is also broken

myers1.8TQ
03-19-2009, 10:17 AM
can the mechanical fan be replaced with an electric one? mine is also broken

Yes, plenty of people have done it. Ive also seen some just run with out the fan/clutch/pulley and a shorter belt.

MrBloink
03-19-2009, 10:22 AM
it is on the drivers side. its a us car btw. lol i guess that matters when you say which side it is on

myers1.8TQ
03-19-2009, 10:24 AM
it is on the drivers side. its a us car btw. lol i guess that matters when you say which side it is on

Yeah that is true. : )

Were you in high rpm's when it happened and your rad wasnt damaged?

MrBloink
03-19-2009, 10:40 AM
it was probably at about 4k. it doesent seem like the rad was damages.

myers1.8TQ
03-19-2009, 10:52 AM
it was probably at about 4k. it doesent seem like the rad was damages.

Make sure you check the rad, a few days after this happened to me my rad started leaking when I was driving.

Replace fan and clutch. This can be done without the removing the radiator, but is a lot easier doing so.

If you want, I can do a quick write up about it.

MrBloink
03-19-2009, 11:15 AM
i have low fluid, but that has been the case for a while unfortunately. If i am to remove the rad, then i would have to remove the bumper and all that also? i would prob prefer to just replace it without removing anything. a write up would be great.
Thanks

myers1.8TQ
03-19-2009, 11:18 AM
Just the bumper, I dont know why everyone says its hard to remove the bumper. It takes me only a few minutes.

Do you have an auto?

MrBloink
03-19-2009, 11:21 AM
its a 1.8t manual. I just checked the rad and there are a couple miscellaneous dings on fins, but there is nowhere that is leaking and no coolant is on the floor

myers1.8TQ
03-19-2009, 11:24 AM
Okay thats good.

It will honestly be easier to do it with removing the radiator.

I will put something together with removing the bumper and rad.

MrBloink
03-19-2009, 11:27 AM
ok thanks. how much time will this likely take? and what can i mess up when doing this? thanks for your help

myers1.8TQ
03-19-2009, 11:30 AM
ok thanks. how much time will this likely take? and what can i mess up when doing this? thanks for your help

Time: 1.5 hrs. 2 max if you go slow.

Mess up: nothing really, none of it is real technical.

No problem.

MrBloink
03-19-2009, 11:32 AM
ok thanks.

ghost6303
03-19-2009, 11:33 AM
can the mechanical fan be replaced with an electric one? mine is also broken

yes
http://supremepowerparts.com/2/0/0/5653/1997-2001_Audi_A4_Quattro_1.8T.html


and once you remove the bumper once and know how to, the next time you can do it in under 5 minutes easily. its only 2 bolts and 2 clips.

MrBloink
03-19-2009, 07:06 PM
so how do i go about this? is there a tut?

myers1.8TQ
03-19-2009, 07:12 PM
I am working on it right now. Ran into some problems with my car. Should be done it 10-15.

myers1.8TQ
03-19-2009, 08:03 PM
Standard disclaimer: do this at your own risk... you break something, its your fault...not mine or AZ's.

1. Remove the bumper. First disconnect the headlight washed fluid line and any fog light wiring. You can clamp the end of the washer fluid hose to keep any fluid from leaking. Then loosen and remove the retaining bolts on each side. (red arrows) Once you have to bolts removed and the bumper loose, go to each side and push down on the top and pull towards you and to the front. Pull bumper off and place to the side.

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1165.jpg

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1166.jpg

2. Removing the A/C core. Remove the power steering fluid cooler and outside temp sensor below the core and place to the side. Remove the two bolts and bracket on each side. (red circles) Also remove the plug from the core. (blue circle) Pull the up and out and place to the side. Dont disconnect any hoses.

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1167.jpg



3. Removing the radiator. First unscrew the plug and drain the coolant. (red circle). Then disconnect the top and bottom hose by lifting the spring and pulling away from the radiator. Also disconnect the coolant sensor from the radiator. (yellow circle) Pull the retaining clips from the top of the radiator. Push the clip to the side and lift up. Pull the radiator out and place to the side.

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1171.jpg

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1170.jpg

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1178.jpg

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1169.jpg

4. Remove the fan from the fan clutch. Loosen and remove the four bolts that hold the fan.

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/fan-clutch.jpg

http://http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/fan-clutch.jpg

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/newfanc.jpg

5. Remove the fan clutch/pulley. Place a thin screw driver or allen key in the small tabs and through a hole in the pulley. (red line) Next remove the bolt from the pulley. *Note on AEB 1.8T it is NOT reverse thread*

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1184.jpg

To remove the pulley/clutch, use a wrench and pull the tensioner towards the driver's side (US model) of the car.

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1181.jpg


6. To separate the pulley and clutch, loosen and remove the 3 bolts. (red circle)

http://i484.photobucket.com/albums/rr209/myersct2/Audi%20A4/AZ/100_1185.jpg


Reinstall is in opposite order. Be sure all tools are removed and out of the way and the car is filled with the proper coolant type and amount before starting car.

Good luck.

MrBloink
03-20-2009, 06:04 AM
After i unscrew thoes four bolts that hold the fan on, can i just be finnished there?

myers1.8TQ
03-20-2009, 07:04 AM
Yes if you are just replacing the fan.

Most likely the reason your fan went was because the clutch was bad. The first time my fan went I replaced it and the radiator. Less than a week later my fan went again and I was lucky the radiator didnt get destroyed again. I checked the fan clutch and it was completely seized.

Thats what I suggest doing, but its your choice.

MrBloink
03-20-2009, 12:18 PM
how can i check to see if the clutch is working or not?

myers1.8TQ
03-20-2009, 12:21 PM
how can i check to see if the clutch is working or not?

Pretty much spin it if it seems to have any play/wobble/ or resistance. Then you know.

zeusbap
05-24-2010, 07:52 PM
I don't mean to bring up an extinct thread (but I'm going to anyway). I noticed a few weeks ago that my fan is cracked on the outer rim. Is this something I should be worried about? I don't want there to be a problematic imbalance in my mechanical fan when I take it to the track next week - should I pony up the $40 and a few hours to replace this guy? I can attach a picture tomorrow if you're interested in seeing the damage - it's separated at the crack by about half an inch and the sides are slightly offset too. The picture might help...

Fan in question:
http://www.ecstuning.com/Audi-B5_A4-FWD-1.8T/Search/058121301B/ES2911/

zeusbap
05-26-2010, 10:46 AM
I'm going to bump this thread with a picture - would a little bit of duct tape solve the problem for a while or would that just increase the vibration and lead it to break further? Sorry about the focus, I figured it got the point across.

http://dl.dropbox.com/u/268677/Longterm/a4fan.JPG

4A Play
05-26-2010, 11:03 AM
Yea I would go ahead and replace that. Might as well do a snub mount while the car is apart. Duct tape has no place on our cars.

zeusbap
05-26-2010, 09:30 PM
Yeah, I was thinking about that while I had the bumper off. The car only has 65k but from what I hear, the snub mount will keep deteriorating over time, so might as well.

The question I have is:
The snub mount replacement DIY outlined here (http://www.goapr.com/support/snub_mount.pdf) doesn't mention anything about jacking up the engine to swap out mounts. Is this a necessary step in the procedure? And if so, can you do it with the Audi scissor jack if you're really careful? Would like to order the snub mount soon, please advise. (going for the PureMS/Stern mount)