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  #16  
Old 07-11-2018, 02:17 PM
w123fanman's Avatar
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I think I have one of those in my garage. Definitely show how to get it in there if you can!
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1980 300SD 183K- Brother's
1983 300D manual 100K chassis- Dad's
1990 Lexus LS400 189k- Brother's
1991 190E 2.3-190D (87, 320K mile) conversion project- Mine
1993 190E 2.6 Sportline Limited Edition 207K-Mine
1993 190E 2.6 Sportline Limited Edition 91K-Mine
2003 Sprinter 2500 Passenger 205K-Dad's
1996 Mercury Grand Marquis LS 240K- Head gasket failure
2006 Mercury Grand Marquis LS 80K-Mom's
Parts cars:
1977 240D Auto-RIP
1979 300SD
1980 300SD
1983 240D-RIP
1993 190E 2.6-RIP
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  #17  
Old 07-11-2018, 02:19 PM
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Location: The slums of Beverly Hills
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The w203 fan is a monster. Does it fit between the 2.6 engine and radiator?
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  #18  
Old 07-11-2018, 06:32 PM
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Quote:
Originally Posted by tjts1 View Post
The w203 fan is a monster. Does it fit between the 2.6 engine and radiator?
Yes, I made it fit. Its not crazy hot outside today. We are only at 105F with about 34% humidity. So far the temp remains about 85C with ac in stop and go traffic. I need to see how it will work once we hit around 115 dry heat. I did notice that without the 2 front aux fans, the temp is lower. Obviously because the condenser and radiator aren't blocked. But even when the 203 fan is off, the temps still seems to climb a lot slower than with the aux fans in front. Oh....and if you thought the 2 small aux fans were loud at high speed, the car now sounds like a plane idling on the runway. It's probably about 10 times louder than the 2 small aux fans.
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1990 190E 2.6L
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  #19  
Old 07-11-2018, 07:32 PM
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Location: The slums of Beverly Hills
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Nice, got any pics? What alternator are using? What's your voltage at idle with the fan going? The C320 has a 120a or 150a alternative depending on options. And yes at full tilt that thing sounds like a cfm56 at ground idle.
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  #20  
Old 07-12-2018, 06:38 AM
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Please share the wiring scheme you used?
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1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009)
2004 E500 Wagon (6/2013)
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  #21  
Old 07-12-2018, 12:50 PM
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Join Date: Nov 2010
Location: TX
Posts: 3,332
I have wired up a very slim spal branded puller fan in a W124 300E, I used a standalone controller which was pushed into the radiator fins with a plastic tooth thing.

It was a variable speed that way and had a bypass to go full speed once the A/C starts - it really kept the temps down - but sounded like a banshee.

the big MB fan from a later model is not supposed to be run at full power for more than a few minutes I think, the motor heats up very badly.
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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
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  #22  
Old 07-12-2018, 02:48 PM
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Location: Southern California
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I'm very interested in seeing the W203 fan mounted between the W201 radiator and the M103 engine.
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  #23  
Old 07-12-2018, 05:38 PM
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Does anyone know what this blue/green wire is for? It's the connector that goes into the fan controller so it is part of the w203 wiring harness?
Attached Thumbnails
Newer MB 600 watt electrical fan in a m103-img_20180712_141746.jpg  
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  #24  
Old 07-12-2018, 05:54 PM
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I believe the green/blue wire is the trigger, though I can't tell you how it operates.
__________________
1980 300SD 183K- Brother's
1983 300D manual 100K chassis- Dad's
1990 Lexus LS400 189k- Brother's
1991 190E 2.3-190D (87, 320K mile) conversion project- Mine
1993 190E 2.6 Sportline Limited Edition 207K-Mine
1993 190E 2.6 Sportline Limited Edition 91K-Mine
2003 Sprinter 2500 Passenger 205K-Dad's
1996 Mercury Grand Marquis LS 240K- Head gasket failure
2006 Mercury Grand Marquis LS 80K-Mom's
Parts cars:
1977 240D Auto-RIP
1979 300SD
1980 300SD
1983 240D-RIP
1993 190E 2.6-RIP
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  #25  
Old 07-12-2018, 06:53 PM
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Join Date: Aug 2007
Location: Southern California
Posts: 356
Which green wire? the one in the plug or the one bundled up? Or are those the same wire I'm looking at? Picture is dark.

Here is a pinout of the connector

Attached Thumbnails
Newer MB 600 watt electrical fan in a m103-capture.jpg  
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  #26  
Old 07-12-2018, 11:17 PM
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Join Date: Oct 2004
Posts: 2,858
Its the PWM signal wire. The other smaller wire is the circuit 15 connection. When circuit 15 has power and there is no PWM signal the fan defaults to 100% on. A 10% PWM signal is needed to hold the fan off when circuit 15 is present.
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90 300TE 4-Matic

Turbo 103 4-Matic, 3 cam advance
11-18 PSI, A2W I/C, 40 LB/HR
MS II Extra, 60-2 Direct Coil Control
3" Exhaust, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Brake Discs, .034 Booster.
3.07 Front and Rear Diff, 1st Gear Start

91 300CE parting

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197 intake cam w/20 advancer
4 ignition advance
PCS TCM2000 running 722.6 trans, 600W PWM fan, water injection
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  #27  
Old 07-13-2018, 10:44 AM
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Ok, got it. It's the speed controller.
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1990 190E 2.6L
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