Skip to main content ↑ ↓
Topic: Fan test update (Read 588 times) previous topic - next topic
0 Members and 1 Guest are viewing this topic.

Fan test update

Yahoo Message Number: 62970
Mike, Larry

Appreciate the input. My controller (Saur Sundstrand) has a six wire connector, not two. The challenge continues.
Lyle Wetherholt
04 Intrigue 11740

Re: Fan test update

Reply #1 –
Yahoo Message Number: 62971
Lyle,

Mine has 2 connectors, a 6 wire and a 2 wire. The two wire is the 12 volt dc supply and the 6 wire is sensor inputs.

Don Seager

2004 Allure 31046

Re: Fan test update

Reply #3 –
Yahoo Message Number: 62973
Quote
Quote from: Larry F"
Don, Larry,

Ok guys, I crawled under again and found a two wire female connector not connected. Two of those wires go to, or from, the six wire connector. And, I also found a two wire female connector not connected. They appear to be mates. So, if that is the DC supply, disconnected, what does the DC do? My tach check showed 977 RPM. According to Mike that should be medium idle speed. Conclusion? Maybe I'm running in medium idle all the time with no high speed capability? Lyle Wetherholt
04 Intrigue 11740

DITTO

Larry

Quote from: Don Seager"

>

> Lyle,
>

> Mine has 2 connectors, a 6 wire and a 2 wire. The two wire is the 12 volt dc supply and the 6 wire is sensor inputs.
>

> Don Seager

> 2004 Allure 31046
>
>

> Mike, Larry

> Appreciate the input. My controller (Saur Sundstrand) has a six wire connector, not two. The challenge continues.
> Lyle Wetherholt
> 04 Intrigue 11740
>

Re: Fan test update

Reply #4 –
Yahoo Message Number: 62974
Quote
Quote from: Larry F"
Don, Larry, Mike

This is a second post--I think I forgot to hit send the first time. OK, I crawled under again and found a two pin female, disconnected, connector. Then I found a two pin male, disconnected connector. They appear to be mates. If this is the DC supply what is it supposed to do and what is the result with no DC? Mike gave me specs that showed medium idle to be 800-1300 RPM. I tach at 977 RPM. Do I presume that I am running at medium idle all the time and never go to high RPM?? Lyle Wetherholt
04 Intrigue 11740

DITTO

Larry

Quote from: Don Seager"

>

> Lyle,
>

> Mine has 2 connectors, a 6 wire and a 2 wire. The two wire is the 12 volt dc supply and the 6 wire is sensor inputs.
>

> Don Seager

> 2004 Allure 31046
>
>

> Mike, Larry

> Appreciate the input. My controller (Saur Sundstrand) has a six wire connector, not two. The challenge continues.
> Lyle Wetherholt
> 04 Intrigue 11740
>

Re: Fan test update

Reply #5 –
Yahoo Message Number: 62977
Lyle,

The fan modulator defaults to high speed when there is no DC supply to the controller. You are likely already at full fan speed. The fan controller adjusts the hydraulic modulator valve to regulate the fluid flow to the fan motor. With no input from the controller it defaults to wide open.

Don Seager

2004 Allure 31046

Re: Fan test update

Reply #6 –
Yahoo Message Number: 62979
The 6 wire plus two wire power connection is indicative of the 1090409 controller. The six wires are two wire each for the three inputs which are 1) coolant temp 2) charge air temp 3) A/C high side pressure trinary switch.
And it is true that if the 12VDC power is interrupted the fan will default to high speed.

George in Birmingham
'04 Allure 31038
George in Birmingham
2003 Magna 6298

Re: Fan test update

Reply #7 –
Yahoo Message Number: 62980
Lyle, If you are running in the summer without over heating you are spending al least some time at high speed.
If your 12VDC supply to the SD controller is disconnected you should be defaulted to high speed and you are likely to be running at too low a temperature.

What is your temperature status?

George in Birmingham
'04 Allure 31038
George in Birmingham
2003 Magna 6298
 

Re: Fan test update

Reply #8 –
Yahoo Message Number: 62992
"So, if that is the DC supply, disconnected, what does the DC do?"
My guess is that the DC wire is connect to a spring loaded hydraulic valve that is spring loaded to the open or closed position when DC power is removed? So, perhaps the DC power is connected to a solenoid or something that compresses the sping to hold the valve in the proper position?

Larry, 03 Allure, 30856