if anyone needs the resistor repair kit, I found this surplus place in NC blowing them out for $31.20 (or you can buy 200 of them for $4300
Shipped mine same day ! half the price of the best I could find !
http://hedrick2.com/main/index.php?p...mid=40&lang=en
Just type in BMW in the search field
Last edited by simont540; 08-17-2010 at 01:23 PM.
ok, so i have a 99 540iT sport with a aux fan that isn't turning on when the a/c comes on rendering my a/c useless. i have gone through this thread and the other one and still have some questions. i have a plug with 3 wires going to it that has power ground and trigger. with the car on and a/c on i have ground on the brown wire, power on the blue wire and power on the remaining small wire. so i can assume my fuses are good, mainly the 75 amp on under the glove box. so i bought a new fan assembly and plugged it in without pulling my whole front end off and it didn't come on. so i started the car and it came on. so i was like ok, cool, progress. to further substantiate this i unplugged the new one and plugged in the old one and it turned on for about 30 seconds and stopped. so now i am thinking its the temp switch. so i replaced that and still nothing no fan. one question i have is that i was seeing a ground at the switch instead of power like the wire at the plug by the aux fan, is that correct? also i have the fan that has the box on it which i assume its the resistors.
someone please help, its been 2 weeks now without a/c and the florida heat is killing me along with all the smoke from the wild fires.
The troubleshooting of the Aux fan really depends on whether you have the one with the resistors or the one controlled by the ECU. You need to determine first whether you car SHOULD have the old style or new style. It is particularly important for you since you are at the cusp 9/98 when they changed over at 8/98.
If you bought the old and try to connect to the new, I don't think it will work.
Last edited by CSMBlack-540i; 06-21-2011 at 01:20 PM.
i have this thread where we have made good progress but aren't quite there yet. http://forums.bimmerforums.com/forum....php?t=1671166
we have concluded that i have the newer 3 wire fan, which is the one i bought as a replacement, so i am good there, just need to figure out how to trouble shoot so i can be sure its the fan before i spend the time taking the front end of my car off.
Mines is doing the same thing i got a 98 528i when i put the ac on it takes about 10 to 12 minutes for the fan to kick in and by that time its too late the TEMP is already rising.Originally Posted by kaane21
I hv d same problem with my 99 523i, d fan will move a bit but it doesn't continue, I replaced it with a new fan & it has been fine since
I have the same problem i got a 98 528i production date 6/98 , when i put the ac on the ac is cold but the fan doesnt come on right away it takes about 10 to12 minutes to come on and then the car starts to overheat when i turn the ac off it doesnt overheat anymore the temperature goes back to normal, and then when i check the power outlet for the ac with the car on and the ac on , 1 wire is the ground and only 1 wire has power so theres 2 wires left but they have no power, should all 3 wires have power? Plus 1 be ground? Somebody please helpOriginally Posted by dvsgene
If u see ur temp goin UP turn ur AC off immediately and if its still goin up turn the car off so u dont damage ur engine,its either ur fan is bad or ur resistors if ur fan got those,like i said mine is doin the same thing i think its the resistors im gonna try to change them this week ill let u know how it went.Originally Posted by DownyFresh
Yeah thats what i do as soon i turn the AC off and keep the car moving the needles goes back to normal.Originally Posted by joako
Yay! So I spent all day today taking off the bumper, cleaning all the little hard to get to places, install the 2nd replacement fan, make sure all the screws were correct & tight. No more rattling/thumping noise when the fan operates!
Thanks to PelicanParts.com for cross-shipping a replacement fan.
Watch out with the condenser! Pressure washer too close will mess it up!!
I bought the resister kit but ended up not needing it (My car is newer and didn't use it at all). It is brand new. I can send pics upon request. Make an offer
Part number 67328371873
So I've gotten two fans from PelicanParts, BEHR brand. Each fan makes a chattering noise. If I jiggle the front end it stops sometimes.
Any advise how to stop the noise?
Don't mean to bring a dead thread back to life, but was anyone able to find a cheap replacement motor after the discontinued SIEMENS PM9047?
hi i have 1997 bmw 540i when i take off resisvior cap pressure comes out from the car being cold thats wired what should i do about it.
Have to ask......can you remove the cross brace at the top (After removing headlights), remove the 4 bolts that secure the fan assembly and pull it out through the top (after disconnecting electrical)?
I replaced my auxiliary fan but now my AC only blows cold while I am in motion.Once I come to a stop, it stops blowing cold air,
Excellent write-up!
Thanks for trying to save me some $$$ and time!
My motor is very loud.
Does it mean that its going to die soon?
Should I go to Autozone now and get replacement?
Thanks again,
siny528i
BMW CCA 434493
Replacing the whole aux fan assembly tomorrow on my 98 e39. I'll let you know how it goes. The housing was shot couldn't save it. I think it may be original so pretty lucky it lasted this long 320k (+) And if it wasn't, I got the car when it had 295k in May of 09 so...
Will follow up.
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