Hi guys I designed this piggyback harness. That plugs into the exsisting factory harness. Normally the fans kick on around 105 degrees C. With my mod wire harness cable. The fans kick on around 92-95 degrees C. Its been proven. Now in bumper to bumper my E class never even sees
100 Degrees C anymore. Please see my post in Hot rod under
cooling. I have alot of orders and alot of happy customers.

Please see a pic of finish product that a user posted for me.


This will work for all Late MB models from 190E class to E classes to S classes. Thanks for your time.


Guido
Factory Tech 14 Yrs.

My 300Ce Never sees 100 C Either, and all I did was have the coolant changed by my mech.

The car runs around 90 in stop start or driving it gets lower, and thats with AC on full blast too int he hot southern california sun.

I like your idea though of havign the fans kick on faster. My car never gets hot enough to engage my fans.. hehe

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

Well I guess your the lucky one. Put a big V8 under your hood. You'll see temps climb. Alot of cars run abnormal and under cool and some run a little warmer. This is just preventative measure. I live in southern cal in downtown bumper to bumper my 500E would get up there. I design it orignally for E500/500E. But some friends of mine have early 190E's and 16 valver so it help tremendously.

Very cool, I plan on checking your performance shop out myself one of these days.

Are you coming to our souther california meet one of these weekends coming up?

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

Italianbenz, you said:
This will work for all Late MB models from 190E class to E classes to S classes.

As far as I know, the adapter picture that I posted for you will only work for V8 engines such as 500E, S500, S420. It, as designed by me, will not work on 190Es, E300, E320, etc.

You're kinda loose cannon! Beware MS forum members!

__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page

Will this not work on a six? I placed a reply post under the "Hot Rod" section regarding the same subject. I have a 300CE and would be very interested in this, if it will work. Is there a similar set up that can be created for us guys with a six? let me know your thoughts.

Thanks

__________________
Dean

Just sold em all !! Curently driving a, 06.5 VW GTI

90' 300CE
Euro Lights w/wipers, Clear corners, 17" Monoblocks, K&N Airfilter, Sportline Suspension, Custom SS single muffler exhaust
80' 300D
96' Harley Davidson, XLH 1200

Check with Arthur Dalton re all E's.

He's said that he was working on a system to do that. We had corresponded and based on the difference in the sensors, the technique I used will not work on work E class cars.

Check this thread: How to change Aux Fan cut-in point
About halfway down, you'll see Arthur's comments.

[Edited by JimF on 06-22-2001 at 11:10 AM]

__________________
Regards . . . . JimF
-------------------
'94 S500 Cpe

Visit my Mercedes Web Page

So who's right? Will it, or won't it work?

I'm Confused. Thanks

__________________
Dean

Just sold em all !! Curently driving a, 06.5 VW GTI

90' 300CE
Euro Lights w/wipers, Clear corners, 17" Monoblocks, K&N Airfilter, Sportline Suspension, Custom SS single muffler exhaust
80' 300D
96' Harley Davidson, XLH 1200

I HAVE ALL THE ACCESS TO ALL MODELS AT MY DEALER. IVE TESTED IT ON MY FRIENDS 300 CE IT WORKS GREAT ON HIS INLINE 6 CYL. MY OTHER FELLOW TECHS DRIVE 300ES AND 190Es IT WORKs/ MY OTHER FRIEND HAS A 16V I TRIED his car runs warm all the time. We fitted it on his car his 16v runs nice and cool.




So with my access to all models . They work,and my background with MB as a factory tech . So jim you cant say they dont work,. Mercedes engines form 4 cyl to 8 cyls turn pretty much all there fans on about at 105 C
now there just turning on earlier. thanks for your time fellow MB enthusiast

Guido
Factory Tech 14 yrs

FWIW, a M103 or M104 engine should not be running hot (over 95-100 C) if the cooling system is in good shape, including regular flushes, and a free-flowing radiator.

My 1988 300TE wagon with a 1994 C36 engine, does not go over 95C even in 100-F weather going up the long grades of Interstate 15 to Las Vegas, Nevada, in the summer.

In Las Vegas stop-n-go weather at 115-F, the water temp never exceeded 100C.

I run 60% distilled water, 40% MB anti-freeze, and 1-bottle of Redline water-wetter.

On our 1993 500E, I currently have the hood sitting higher in the rear to let the heat out, and it works very well.

Now I'm contemplating have hood vents installed a la the current AMG models, into a 1994-1995 hood.

Opinions, thoughts?

:-) neil
1988 360TE AMG
1993 500E

A proper system does not need harnesses or modifications. Living in AZ with a 4,6 and 8 cylinder Benz, I have never had a cooling problem related to the design and hardware of the factory cooling system.
If your car is running hotter than normal, tricking the fans is NOT the solution. Find out what is wrong (radiator, pump, cap, head gasket..) and fix it.
There is an opinion from one who usually can never leave well enough alone! Still though, cannot understand why a MB tech would 'fix' a car with a 'fix' and not a proper repair.
For hot---try AZ in the summer!

Well Racer. I guess you have all the Anwsers. You tell me what we should do. Apparently you dont know the history of 500E's.
Let me tell you something. I have a completely new cooling system and my 500E still runs warm. As do alot of other 500E owners in here. Don't judge on something you didnt research.
Who are you to say what is a proper fix and what isnt. Go do you homework my friend.

Ya cram a big ol engine into a small tight space, heat will be an issue. not much room for extra airflow in a 500E. They do tend to run hotter with that big v8 shorhorned into the engine compartment.

Hows the car doing now guido? Cool as can be?

Alon

__________________
'92 300CE - Sold
2004 C240 - 744 - C7 Wheels - Android Radio
2002 C320 - 816 - Sport Wagon

RacerX-

I think MBZ indeed did allow by design the M119 cars to run as hot as 100 C without fan intervention-however, us performance nuts prefer they run cooler, since power is taken away as soon as the car gets hot (timing gets dialed back). Our cars don't run hotterthan normal for 500Es, they simply just run hot as a characteristic. I mean, look under the hood-no WONDER it runs hot!!!

As to the factory setup, I presume MBZ didn't want the fans running all the time, which is likely what happens when the piggyback harness is installed. This increases wear and tear on the fans, and they draw a HUGE amount of power so maybe there are charging system concerns.

Understanding all this, as I'm sure Guido does, some of us prefer to make this "adjustment". A calculated modification, to be sure. And there's nothing wrong with our cooling systems-near as I can tell, EVERY 500E owner on this board obsessively maintains their ride. No 4 year-old coolant among OUR membership

Racerx, your comments are valid in just about every case, but simply isn't valid in this case (Thank God, since I'd hate to replace the laundry list of parts you referred to). Our cars run hot, and here's a relatively straightforward way to drop the temps.

I plan to buy a harness, but will only use it for track events.

__________________
"If God had meant for us to walk, why did he give us feet that fit car pedals?" Sir Sterling Moss

Michael
2014 E63S Estate
2006 SLK55
1995 E500
1986 Porsche 944 turbo

Just for the fun of it...these are the cars I drive and race 12 months a year:

78 Lola T333 CanAm
97 Formula Mazda
00 Ford Focus ZX3 (VERY modified)
Mercedes CLK320 (2000 and 1998)
90 Mercedes 190E2.6
01 Mercedes S500
97 Ford F350 Dually Diesel
00 Mitsubishi Montero
95 Lotus Esprit Turbo
83 Ferrari 512BBi.

None of them run hot (or hotter than normal) except the Lotus HAHAHAHA! Naturally a 'hotter' running engine does cause a power drop, by virtue of timing or just the natural properties of air and fuel. The original post never made mention of using the car for competition or long and hard running - that's a totally different matter. In fact, under competition use there is more and better that one can do than getting the fans on earlier. My Lola (7 new track records, two absolute, this year...so yes, it is fast) does not even have fans - they are useless over 30-40mph - it is airflow that keeps the car from melting. In the pits at idle we use external auxiliary fans.

Do I have all the answers? No, of course not. But what was the question?

ItalianBenz, no devi essere cosi agressivo con le tue risposte - se quello che scrivi non indica esattamente quello che vuoi dire, come pretendi che la gente ha la guista idea di quello che stai proponendo? E no, non sono meccanico - sono padrone di ditta con i miglior' meccanici in Arizona e anche della squadra di corse piu ben notata.

And what do I know about history? not much, other than three of my cars are in the MB Museum...but that's another story.

I am sure the harness, in of itself, is a useful device and if the salesman didn't blow me off and reply to me like a two bit tire kicker, I would have been easily tempted to order a set or two. Maybe slipping a Prozak or two into the cooling system will do the same thing!

I'll go flog the Lotus tomorrow! POOF!!!sssssssssssssssssss!
Gotta love English technology!

May your hungry camels visit my oasis!

Cheers