Master Cylinder fluid level

Cadillac Forums | Help Us Help You | Advertise | Cadillac Parts | Cadillac News | Cadillac Classifieds

Cadillac Technical Archive | Cadillac Dealers | Cadillac Reviews | Cadillac Dealer Reviews | Cadillac Vendors is the premier Cadillac Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 4 of 4
Suspension, Brakes and Tires Discussion, Master Cylinder fluid level in Item Specific Cadillac Discussion; My 94 seville switches the ABS light on every once in a long while during this winter driving. During this, ...
  1. #1
    Cyberdan3 is offline Cadillac Owners Fanatic
    Automobile(s): 2001 Cadillac STS
    Join Date
    Nov 2003

    Master Cylinder fluid level

    My 94 seville switches the ABS light on every once in a long while during this winter driving. During this, traction and ABS is disabled, and it tells me to check my brake fluid. I look in the master cylinder reservoir, and i see fluid filled a little more than half way. My question is, how full should it be? If it is too full, wont the pressure from the primary and secondary pistons force the reservoir cap to pop off and spray fluid out? Thanks in advance for the help.

    p.s. Has anyone else had this problem with the ABS light going on, and the traction being did you fix it?

  2. Remove Advertisements

  3. #2
    JoeBleed is offline Cadillac Owners Member
    Join Date
    Sep 2003

    Re: Master Cylinder fluid level

    Well i am not positive about newer cars with abs, but most i have seen and older cars with out abs are usualy 3/4 or the way full. some times a little more. I personaly think from my past only half full is not enough. the resevor should have full marks on the side. if not, and you have it, check the owners manual. there should be a section in there about fluid levels, quanties, checking procdures, and such. If you don't have it, and belive me i can understand why, try and go buy your nearest gm dealer. They should not charge you anything to tell you how much fluid it takes. If they do... never go back. (my opinion)
    As for the lite, i am not sure due to my lack of experience with abs. but it may actualy come on when fluid leve lis low or low fluid level and maybe air in the system could cause this. I can see how air would cause a problem for abs to work.

    let me know if you can't find out and next time i am near a gm/cady place i will try and rember to ask.

  4. #3
    MMNineInchNails's Avatar
    MMNineInchNails is offline Cadillac Owners Enthusiast
    Join Date
    Jul 2003
    San Clemente, CA

    Re: Master Cylinder fluid level

    There is probably a little filter there when you take the master cylinder cap off right? the fluid level shoud be just above the filter. It should be full enough to not spew out the sides when you put the cap back on, and it should definatly be higher than the little filter thing. Make sure you put proper brake fluid in and check your manual too.

  5. #4
    beemer2k is offline Cadillac Owners Fanatic
    Join Date
    Jun 2003

    Re: Master Cylinder fluid level

    I have a 96 STS and there's a full line that looks like a minus sign on the side of the master cylinder reservoir.

  6. Remove Advertisements
    Cadillac Forums

+ Reply to Thread
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

What Cadillac(s) do you own? (Or type NONE)

Please select your insurance company (Optional)

Your date of birth and age are displayed in several places on the forum. Only the administrator will have access to your date of birth should you choose to hide it via the privacy option below.


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Cadillac Posting Rules

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts