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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 05-16-2014, 05:23 PM
Solp3100 Solp3100 is offline
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Location: Louisville, KY
 
Join Date: May 2014
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Mein Auto: 2000 BMW 323i
2000 BMW 323i

I hate to bother, but I need some help reguarding my BMW. I have a 2000 Bmw 323i. My cooling fan will not come on and it's causing my car to overheat when idling. It doesn't overheat when driving. It's getting plenty of power to the connector to the cooling fan. I've spend a small fortune on trying to fix this problem. I've replaced the radiator, the cooling fan shroud and cooling fan, expansion tank, both engine coolant sensor, coolant temp, all hoses, thermostat, and water pump. It still is doing the same thing. Over 3k in this already. I'm really needing some advice to figure this out. If your suggestion fixes this I will compensate you!! Seriously i have had enough of this. Please help
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  #2  
Old 05-17-2014, 04:42 AM
ahull's Avatar
ahull ahull is online now
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Location: Carolina
 
Join Date: Apr 2006
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Mein Auto: ist schnell! (03 330i SC)
Quote:
Originally Posted by Solp3100 View Post
I hate to bother, but I need some help reguarding my BMW. I have a 2000 Bmw 323i. My cooling fan will not come on and it's causing my car to overheat when idling. It doesn't overheat when driving. It's getting plenty of power to the connector to the cooling fan. I've spend a small fortune on trying to fix this problem. I've replaced the radiator, the cooling fan shroud and cooling fan, expansion tank, both engine coolant sensor, coolant temp, all hoses, thermostat, and water pump. It still is doing the same thing. Over 3k in this already. I'm really needing some advice to figure this out. If your suggestion fixes this I will compensate you!! Seriously i have had enough of this. Please help
Did you get a new fan or a used one? When a fan fails, it's usually the relay box on the fan.

Regarding power to the fan connector, are you measuring volts or amps? It could be a low-amp current that will still show as volts but not enough to kick on the fan.

You've checked the fuse?

The wiring may be faulty. I've heard of cases where the signal wire from the computer wears through near the connector end at the radiator. This thread may be useful: http://forum.e46fanatics.com/showthread.php?t=778817
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2003 330i TiAg Sport Pkg ~90k miles
DIY MODS: AA Stage I supercharger, Meyle HD FCAs w Powerflex CABs, Bilstein shocks, Meyle HD Rtabs, Angel Eyes, Clear Corners/Markers w/ LEDs, LED tails, ZHP rims, Akebono pads, AUX input
DIY E46 Merit Badges: Sunroof resurrection, CCV, OFHG, VCG w/ VANOS seals, DISA, Cooling Refresh I, steering giubo, window regs, Magnetic Infandibulator (see wiki)
DIY On deck: Rear Diff bushing. UUC SSK, clutch job eventually, Wavetrac LSD
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