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Search took 0.01 seconds. Search: Posts Made By: Arthur Dalton
Forum: Vintage Mercedes Forum 07-20-2009, 04:55 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Yup... Then YOU are the sensor...and you are a...

Yup... Then YOU are the sensor...and you are a BETTER sensor b/c you can be a Variable temp sensor......:)

I did one for a customer years ago and he loved the Roar of the fan ..so the idiot would...
Forum: Vintage Mercedes Forum 07-20-2009, 03:35 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
< oh well, I liked the idea of having that switch...

< oh well, I liked the idea of having that switch to use as needed. >

B/C you have no ac , yours is a simple mod for manual sw.
Just take a wire from that coolant 100C sw and bring it into the...
Forum: Vintage Mercedes Forum 07-20-2009, 11:43 AM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
You're Welcome.........

You're Welcome.........
Forum: Vintage Mercedes Forum 07-20-2009, 05:13 AM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Oh.. Ok. That explains it . Had me goin' on...

Oh.. Ok. That explains it . Had me goin' on that one.

Well.... it seems you are getting it squared away now.
Forum: Vintage Mercedes Forum 07-19-2009, 10:19 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Is that with drier jumpered ?

Is that with drier jumpered ?
Forum: Vintage Mercedes Forum 07-19-2009, 08:54 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
OK Why did the other relay click when you...

OK

Why did the other relay click when you ground 100c sesnor is a good question?
Forum: Vintage Mercedes Forum 07-19-2009, 07:48 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
If it is double pole relay , then someone may...

If it is double pole relay , then someone may have used the other pole to drop ac clutch if temp sensor grounds and calls for aux fan to keep coolant temp in check

That is a possible Mod.

But...
Forum: Vintage Mercedes Forum 07-19-2009, 05:51 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Good Any "Clicking" when you ground the...

Good

Any "Clicking" when you ground the temp sw?


To trace that wire from the temp sw to the correct relay, just unplug the sensor and hook continuity lead there , with other lead going to...
Forum: Vintage Mercedes Forum 07-19-2009, 02:19 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
<I visually inspected all the fuses I could find...

<I visually inspected all the fuses I could find and found none that looked blown.

>> Yeah, we know so well.

Benz fuses loose the connection at the ends in their holders , and all is required...
Forum: Vintage Mercedes Forum 07-19-2009, 01:53 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
OK Then this is the important part that I...

OK

Then this is the important part that I asked earlier..
Does the schematic show a R15 resistor in the aux fan circuit.
I did not think they used them that far back, but I have a parts book...
Forum: Vintage Mercedes Forum 07-19-2009, 01:05 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
OH.. How many wires are in the fan harness? ...

OH..

How many wires are in the fan harness?
That may be a 2 speed fan motor
Forum: Vintage Mercedes Forum 07-19-2009, 01:02 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
< I do not have continuity between pin 87 and the...

< I do not have continuity between pin 87 and the yellow wire that is supposed to feed the fan 12V.
I have continuity from the other wire in the harness, a brown one, to ground.
>

OK


Just...
Forum: Vintage Mercedes Forum 07-18-2009, 05:50 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Ohm the unplugged fan connector back to 87 of...

Ohm the unplugged fan connector back to 87 of that relay for continuity on one leg and continuity to ground on the other leg.

That will confirm both ground and that relay being feed for fan
...
Forum: Vintage Mercedes Forum 07-18-2009, 05:24 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Pull relay and look for 12v at 30 and a good...

Pull relay and look for 12v at 30 and a good ground...if yes, then jumper from 30 to 87 for fan test.

If no, then fuse feed to 30 is the problem
Key ON for test.

Do you have schematic?
Forum: Vintage Mercedes Forum 07-18-2009, 02:49 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
Yes . they do ...but it is b/c they do not have...

Yes . they do ...but it is b/c they do not have the TWO fan circuits like Benz does.

What has to be understood about the Benz Aux fan circuit is they use the same fan for Coolant Temp control and...
Forum: Vintage Mercedes Forum 07-18-2009, 02:33 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
<If the car heats up so much that the A/C turns...

<If the car heats up so much that the A/C turns off you wouldn't want the aux fan turning off at the same time.

>

It doesn't b/c the same fan also has a Coolant temp sensor at 100C...
Forum: Vintage Mercedes Forum 07-18-2009, 01:53 PM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
< Just checked - my gauge has just 3...

<

Just checked - my gauge has just 3 numbers - 100, 175 and 250F>

US Version.

The 20C increments are for Euro Model gauges and all later models.
Forum: Vintage Mercedes Forum 07-18-2009, 11:32 AM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
>>The temp gauge is hard to read on these cars,...

>>The temp gauge is hard to read on these cars, but mine is always just below the 9 o'clock position.>

The lines are in 20 degree C increments.
Forum: Vintage Mercedes Forum 07-18-2009, 09:36 AM
Replies: 60
Views: 9,254
Posted By Arthur Dalton
The a/c uses the aux fan when the drier sw trips...

The a/c uses the aux fan when the drier sw trips closed OR the coolant sensors grounds.

So, jumper the drier sw and see if you have fan. If NO , then go to the relay and jumper pins 30 and...
Showing results 1 to 19 of 19

 
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