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  #1  
Old 12-05-2006, 10:34 PM
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Sol. C Switch Observations

Well I have a switch hooked up to my Sol. C with a Led light to show power in the circuit. Left on (normal operation), it works like a TPS almost. Full light is mostly FWD, off is close to 50/50. Helps me know how the car is running. Very useful and informative, give it a try.
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  #2  
Old 12-05-2006, 10:56 PM
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A bunch of folks over at the Ultimate Subaru board have done this and there have been a few tranny failures believed to be caused by it. Here is one thread I found after a quick search. There are a few other where they go into more detail, but I'm too tired to research them tonight...
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  #3  
Old 12-06-2006, 12:05 AM
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I read the thread but it makes no sense. Leaving the switch on (normal condition) should have ZERO effect on the clutch packs. It is still operating as usual and is through suffiecient gauge wires. There is no logical reason not turning the switch off (50/50) would mess with the trans. I meant to use the switch to monitor and get out of snow. The current doesn't go through the LED but simply takes a small part of the voltage and grounds it to illuminate the LED. Any other input would be appreciated as well.

PS- No problems
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Old 12-06-2006, 07:10 AM
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Old 12-06-2006, 11:06 AM
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Re-read the thread and I have seen that most of the failures were due to prolonged usage on inappropriate surfaces (i.e. Pavement ) and has caused the clutches to wear extremely fast. However, I have yet to use it, just to monitor.

On a side note, even with the FWD fuse, the C sol. is still active (???) Why, if anyone knows?
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1997 Chevy 1500 -FOR SALE-
5.7 liter, Z71, 300hp+, still almost 20mpg

1986 Merkur XR4Ti -SOLD-
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Old 12-06-2006, 11:56 AM
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Instead of forcing 4WD it would be interesting to see a gauge showing what the solenoid is doing (or calibrate it to show your power distribution).
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Old 12-06-2006, 02:49 PM
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Quote:
Originally Posted by Earthworm
Instead of forcing 4WD it would be interesting to see a gauge showing what the solenoid is doing (or calibrate it to show your power distribution).
The brilliance of the LED will give a useful approximate illustration of the on/off time relative to the pulse width modulation delivered to the solenoid, as is mentioned in the first post within this thread. However it must be accepted that there are other separate control factors involved, affecting the exact final front rear torque ratio.

Provided an LED is used, there should be no affect on the signal, as only a small current is involved.
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Old 12-06-2006, 04:07 PM
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Trevor, thats what I'm trying to say!!! My LED does not show the C sol. being turned off in FWD fuse mode, thats the revelation. I know other factors contribute to 50/50 Awd, but the C Sol. is the single simplest factor to control.

It is still interesting to watch though
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1997 Chevy 1500 -FOR SALE-
5.7 liter, Z71, 300hp+, still almost 20mpg

1986 Merkur XR4Ti -SOLD-
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Old 12-06-2006, 04:23 PM
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Quote:
Originally Posted by hexadec0079
It is still distracting to watch though
Fixed...I think
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Old 12-06-2006, 05:29 PM
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Quote:
Originally Posted by hexadec0079
Trevor, thats what I'm trying to say!!! My LED does not show the C sol. being turned off in FWD fuse mode, thats the revelation. I know other factors contribute to 50/50 Awd, but the C Sol. is the single simplest factor to control.

It is still interesting to watch though
Take into account that the solenoid valve is closed when not energised.
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Old 12-06-2006, 05:42 PM
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yes i know

it remains lit when in FWD fuse mode though...
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1997 Chevy 1500 -FOR SALE-
5.7 liter, Z71, 300hp+, still almost 20mpg

1986 Merkur XR4Ti -SOLD-
SVO Engine, T3 hybrid turbo, K&N, custom ducting, Initial D painted, 18psi, fastest car for under $1000, ever.
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  #12  
Old 12-07-2006, 03:11 PM
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Quote:
Originally Posted by hexadec0079
yes i know

it remains lit when in FWD fuse mode though...
Thats the way the transfer AWD works.. The solenoid is turned full on, (95% duty cycle) to disengage the rear wheel's drive.

Harvey.
PS. the solenoid is open when not energized.
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  #13  
Old 12-07-2006, 03:26 PM
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Quote:
Originally Posted by oab_au
Thats the way the transfer AWD works.. The solenoid is turned full on, (95% duty cycle) to disengage the rear wheel's drive.

Harvey.
PS. the solenoid is open when not energized.
The solenoid is CLOSED when not energised .
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  #14  
Old 12-08-2006, 10:36 PM
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sorry for the confusion, but it does dim and change in FWD fuse mode.
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1992 SVX- -Drivetrain by BUDFREAK-
Green, LS with spoiler, 157,000, ES Swaybar bushings, 9005/6 mod, 2.25' Dual Exhaust, Custom Grounding, Hyperwhite fogs, LED tails, 4.44s, custom Blitz intake, tranny cooler, thats about it, for now...

1997 Chevy 1500 -FOR SALE-
5.7 liter, Z71, 300hp+, still almost 20mpg

1986 Merkur XR4Ti -SOLD-
SVO Engine, T3 hybrid turbo, K&N, custom ducting, Initial D painted, 18psi, fastest car for under $1000, ever.
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  #15  
Old 12-08-2006, 11:15 PM
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Quote:
Originally Posted by hexadec0079
sorry for the confusion, but it does dim and change in FWD fuse mode.
Your diligence is very much appreciated and will prevent unfortunately instigated, much more serious gross errors, stated by another regarding the subject, continuing.
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