Anyone know of one that will work in place of the stocker that kicks the fan on sooner? Maybe a 95°C/115°C?

Seeing how mine doesn't work, why not upgrade?

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

There's a few different ones you can use.

Red: 006-545-42-24 (100/110)
Green: 006-545-45-24 (105/115)
Grey: 006-545-61-24 (105/120)
Blue: 006-545-64-24 (105/128)

The first number in parenthesis is the temperature that the aux fan engages at high speed, and the second number is when the AC compresor will cut out.

GSXR recommends the grey one:
http://www.w124performance.com/images/W124_stuff/Temp_switch_105-12x.jpg

__________________
'95 E320 Wagon my favorite road car. '99 E300D wolf in sheeps body, '87 300D Sportline suspension, '79 300TD w/ 617.952 engine at 367,750 and counting!

Ohhhh so there's no low speed for the aux fan when it kicks on?

I'm not too worried about when the comp kicks off as I'd have the A/C off and the heat on high by then, so maybe the red is best?

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

The temp switch on the head that is referred above will start the fan on high speed.

The temp. switch on the dryer will start the fan at low speed.

What would be causing my aux fan to run constantly? Could that be a switch problem also?

__________________
87 300D - Running on Veggie oil; 260,000 plus miles; Original #14 head

I like the idea of 95°C/105°C, but I guess 95°C/115°C would be better than stock. Any idea what the part number is?

-Jim

__________________
1995 S350D, Green with black leather interior.
Bought January 2008 w/ 233,xxx miles.
I did 22,000 miles during the first year of ownership.

while you are in there and if you want more control, set up a manual override switch on your aux fan so it is there on demand.

I replaced my mechnical fan with twin electric units and have them independedntly wired, fused, and thermostatically controlled as well as indi override switched. In addition I also added a two way hi/lo manual override switch for the aux fan. Now when I need that extra AC boost at Idle, I can switch on the aux fan hi/lo as needed...also useful in a emergency situation when your coolant temp rises or one of your switch fails, manually throw on the fans full blast!

My gang of switches is now fully occupied on the dash, used standard MB switches of the correct style.

Just a thought and good luck

__________________
Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)

Great unless you have to explain how to use the switches to the wife
I'm having a hard time getting her to hit one button to switch vo on and off!

__________________
82 300D....went to MB heaven
90 350 SDL....excercising con rods

I'm curious on how you did that. Did you have spare switch positions.......or modified the dash???

I think the gray one is whats in their now. My car usualy never gets that hot, only when flushing the coolant.

However I have noticed she runs warmer this year then last, hmm strange.

__________________
2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Hey Brian,
Please keep in mind this was first attempt at this
I had the useless antenna up/down switch which was elliminated in favor of the auto up from the aftermarket radio. I then removed the switchplate and used the backside to create a three cutout pattern in 1/4 in. plexi. This would ensure the proper size and spacing between the switches After cutting out the patten on my template I fixed to to the backside of the switchplate so as to have a flat work surface and transfered the switch cutouts to the switchplate using a router.

This worked well, in retrospect I should have opted for a finer router bit to minimize some rough edging on the face side of the switch surround from chipping the veneer.

As to switches used, the hi/lo is a w124 rear wiper sw on/off/on, the other two override swiches for the main cooling fan are dome light switches simple on/off. I canabalized a fan switch emblem for my aux fan and glued it in place, it lights up as night though albeit cobbled.

Here's a pic

EDIT
I forgot to mention that the rear of the center console has cutouts for a full gang of switches, the switches themselves usually plug into a harness, lacking in my case but could have been used. The design of the assembly allows placement of extra switches and wiring without a harness as the top switchplate holds them all in place securely.

Attached Thumbnails

 

__________________
Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)

Now that we can see the photo that's a terrific job. Those switches look like they came from the factory!

Maybe I'll see if I can add some to the SDL. I'd sure like to control the aux. fan from the console.

I ordered the red today (with about $870 in other parts) so I'll let ya guys know how it works out.

__________________
I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

92 300E temp sensor question

check out post #4.

The member is referring to an OM603.

__________________
Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed.

W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html

1 X 2006 CDI
1 x 87 300SDL
1 x 87 300D
1 x 87 300TDT wagon
1 x 83 300D
1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry.