SaturnFans.com
what's new (beta) - classifieds - forums - photos


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech
Register FAQ Members List Groups Calendar Chat Room Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
Old 10-19-2010, 01:51 AM   #1
PlasticCarsRock
Master Member
PlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the rough
 
PlasticCarsRock's Avatar
 
Join Date: Dec 2005
Location: Brookline, MA
Posts: 4,303
 

1995 SL2
Default How does the brake fluid level sensor work?

I'm just curious--I recently discovered that the sensor for the low brake fluid warning doesn't actually go into the reservoir at all (there is no direct contact with the fluid to operate a float or anything, it's just in a channel sealed off from the fluid). So... how does it work?

...
High compression build: .033" shaved/ported head, flat-faced valves; gen3 rods, pistons, tie-plate; OE header, custom CAI, SDA street cams with adjustable sprockets, WBO2, SAFCII, LSD. ASE A1-A8+L1

REWARD EXCELLENCE!

Add to PlasticCarsRock's Reputation
Rate the quality of this post and help PlasticCarsRock reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
PlasticCarsRock is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 10-19-2010, 08:48 AM   #2
jcscheer
Member
jcscheer is on a distinguished road
 
Join Date: Jul 2010
Location: Columbia, Maryland
Posts: 60

1997 SW2
Default Re: How does the brake fluid level sensor work?

I would suspect there are contacts integral with the brake reservoir and some manner of connection to the sensor. Perhaps a FSM owner could enlighten us all.

REWARD EXCELLENCE!

Add to jcscheer's Reputation
Rate the quality of this post and help jcscheer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
jcscheer is offline   Reply With Quote
Old 10-19-2010, 09:06 AM   #3
mattelderca
Senior Member
mattelderca will become famous soon enough
 
mattelderca's Avatar
 
Join Date: Apr 2007
Location: Whitby, Ontario
Posts: 1,233
 

1998 SC1
1996 SL
Default Re: How does the brake fluid level sensor work?

Pretty sure this is exactly how the Saturn one works,
Google is your friend!
http://www.meder.com/fileadmin/meder...pplication.pdf

...
2000 SL1 freebie, my sons DD
1998 SC1 still running, FOR SALE cheap!
1996 SL, GONE but not forgotten
2005 Generic Silver Minivan (Kia Sedona)
2009 Nissan Sentra 2.0S

REWARD EXCELLENCE!

Add to mattelderca's Reputation
Rate the quality of this post and help mattelderca reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
mattelderca is offline   Reply With Quote
Old 10-19-2010, 09:39 AM   #4
jcscheer
Member
jcscheer is on a distinguished road
 
Join Date: Jul 2010
Location: Columbia, Maryland
Posts: 60

1997 SW2
Default Re: How does the brake fluid level sensor work?

EXACTLY what I was thinking... not




Very cool though

REWARD EXCELLENCE!

Add to jcscheer's Reputation
Rate the quality of this post and help jcscheer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
jcscheer is offline   Reply With Quote
Old 10-19-2010, 09:45 AM   #5
mattelderca
Senior Member
mattelderca will become famous soon enough
 
mattelderca's Avatar
 
Join Date: Apr 2007
Location: Whitby, Ontario
Posts: 1,233
 

1998 SC1
1996 SL
Default Re: How does the brake fluid level sensor work?

Quote:
Originally Posted by jcscheer View Post
EXACTLY what I was thinking... not


Very cool though
That is exactly how it works. It is the same as the float in the coolant tank as well. Except that coolant loss can happen if the seal fails where the sensor enters the coolant tank. You would not want that chance on the braking system, so they do away with the seal and fit the sensor in a cavity instead.

...
2000 SL1 freebie, my sons DD
1998 SC1 still running, FOR SALE cheap!
1996 SL, GONE but not forgotten
2005 Generic Silver Minivan (Kia Sedona)
2009 Nissan Sentra 2.0S

REWARD EXCELLENCE!

Add to mattelderca's Reputation
Rate the quality of this post and help mattelderca reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
mattelderca is offline   Reply With Quote
Old 10-19-2010, 01:13 PM   #6
PlasticCarsRock
Master Member
PlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the rough
 
PlasticCarsRock's Avatar
 
Join Date: Dec 2005
Location: Brookline, MA
Posts: 4,303
 

1995 SL2
Default Re: How does the brake fluid level sensor work?

Quote:
Originally Posted by mattelderca View Post
Pretty sure this is exactly how the Saturn one works,
Google is your friend!
http://www.meder.com/fileadmin/meder...pplication.pdf
Yeah, that's it (exactly what it looks like, at least). So basically the sensor is just a gaussmeter that reads the magnetic field of a magnet that floats on top of the fluid level... clever.

...
High compression build: .033" shaved/ported head, flat-faced valves; gen3 rods, pistons, tie-plate; OE header, custom CAI, SDA street cams with adjustable sprockets, WBO2, SAFCII, LSD. ASE A1-A8+L1

REWARD EXCELLENCE!

Add to PlasticCarsRock's Reputation
Rate the quality of this post and help PlasticCarsRock reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
PlasticCarsRock is offline   Reply With Quote
Old 10-19-2010, 01:55 PM   #7
mattelderca
Senior Member
mattelderca will become famous soon enough
 
mattelderca's Avatar
 
Join Date: Apr 2007
Location: Whitby, Ontario
Posts: 1,233
 

1998 SC1
1996 SL
Default Re: How does the brake fluid level sensor work?

Quote:
Originally Posted by PlasticCarsRock View Post
Yeah, that's it (exactly what it looks like, at least). So basically the sensor is just a gaussmeter that reads the magnetic field of a magnet that floats on top of the fluid level... clever.
No fancy Gauss doo-hicky, just a reed switch.

...
2000 SL1 freebie, my sons DD
1998 SC1 still running, FOR SALE cheap!
1996 SL, GONE but not forgotten
2005 Generic Silver Minivan (Kia Sedona)
2009 Nissan Sentra 2.0S

REWARD EXCELLENCE!

Add to mattelderca's Reputation
Rate the quality of this post and help mattelderca reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
mattelderca is offline   Reply With Quote
Old 10-19-2010, 02:06 PM   #8
PlasticCarsRock
Master Member
PlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the roughPlasticCarsRock is a jewel in the rough
 
PlasticCarsRock's Avatar
 
Join Date: Dec 2005
Location: Brookline, MA
Posts: 4,303
 

1995 SL2
Default Re: How does the brake fluid level sensor work?

Quote:
Originally Posted by mattelderca View Post
No fancy Gauss doo-hicky, just a reed switch.
Well, a reed switch is just a very simple (digital) gaussmeter (magnetometer). Typically, they're voltmeters (analog) that measure the Hall effect (the voltage difference between the edges of a wide conductor, created by the magnetic field through it.

...
High compression build: .033" shaved/ported head, flat-faced valves; gen3 rods, pistons, tie-plate; OE header, custom CAI, SDA street cams with adjustable sprockets, WBO2, SAFCII, LSD. ASE A1-A8+L1

REWARD EXCELLENCE!

Add to PlasticCarsRock's Reputation
Rate the quality of this post and help PlasticCarsRock reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
PlasticCarsRock is offline   Reply With Quote
Old 10-19-2010, 02:33 PM   #9
jcscheer
Member
jcscheer is on a distinguished road
 
Join Date: Jul 2010
Location: Columbia, Maryland
Posts: 60

1997 SW2
Default Re: How does the brake fluid level sensor work?

I was just being silly as that is not what i envisioned. I thinks it a cool design and relatively simple one at that. Dont want you to think i was being critical or derisive in any way

REWARD EXCELLENCE!

Add to jcscheer's Reputation
Rate the quality of this post and help jcscheer reputation points. Click the reputation button near the bottom left corner of this message box. Thank you!
jcscheer is offline   Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
brake light on, fluid level good dorisSL S-Series Tech 0 08-10-2010 04:25 PM
Brake fluid level - Wheres the line the cap speaks of? foo S-Series Tech 2 05-03-2008 03:06 PM
Low level in brake fluid reservoir neilpilot 2008 Vue 2 03-17-2008 08:18 AM
Brake fluid level? turbobuick33 S-Series Tech 3 05-14-2007 12:41 PM
Brake light comes on at WOT--fluid level o.k. newt Miscellaneous Tech 2 12-07-2004 08:41 AM


All times are GMT -5. The time now is 06:18 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SaturnFans.com. The Saturn Enthusiasts Site.