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Old 06-06-2018, 06:34 PM   #1
jwright
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Default brake fluid leak

I've got a 2007 Saturn Aura. The brake fluid light came on a couple of weeks ago. I noticed it was low on brake fluid and suspected a leak. So I added some fluid and planned to check the car in a few days. Well, I went on a trip and then it rained for a week in the afternoon and I forgot all about it. So the car sat for about two weeks. Today I noticed a large wet area under the drivers side rear tire. It looks like the wheel and tire are wet. Based on what I've read, this looks like a bad rear wheel cylinder. Does that sound right? I haven't taken the wheel off to check. Thought I'd check here and see if this is a job best left for a shop before I got my tools out. Thoughts?

My guess is that the job can't be any harder than the "How to Replace Brake Wheel Cylinder in Your Car" Scotty Kilmer video on youtube.

Last edited by jwright; 06-06-2018 at 06:41 PM..

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Old 06-06-2018, 07:33 PM   #2
fdryer
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2003 L-Series 3.0L Sedan
Default Re: brake fluid leak

Rear brake drums or disc? Beware of Scotty Kilmer videos. There are always questionable videos if you're not fully aware of anyone without credentials to back up expertise in specific areas. Remember, if you follow anyone's advice from a video and run into problems, is that person going to reply to questions immediately? Same here on these public message boards but you can always bad mouth a member and complain to Charlie the admin to remove a member. Brakes are safety issues. If you do your own work, you assume all risks. Many here, myself included, perform all brake repairs on our cars and assume theses risks. Your choice to plunge ahead or pay someone that must back up their work with a warranty and any liability issues if their repairs fail and an accident, injury or death occurs from faulty repairs traced back to incompetence.

A genuine brake fluid leak is a major repair. Beware of everything necessary for a successful repair. You can always remove a tire and examine the area of leakage to assess what repairs are needed, no different from any shop getting a customer's descriptions then examining where a problem lies, assessing costs before informing the customer on a final bill. If you're familiar with brake repairs then by all means go for it.

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Old 06-06-2018, 10:37 PM   #3
explorerbigjon
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2008 AURA XE
Default Re: brake fluid leak

*Brake Caliper*

All Saturn Auras including the other Epsilon platform cars came with 4 wheel disc brakes.

Either the caliper is leaking fluid, or the hose is leaking fluid, or both. Check the fitting of the hose to the caliper, it is possible the sealing washers have sprung a leak. The bleeder valve on the caliper may also have come loose and is allowing fluid to leak. Much easier to replace the caliper and hose than a wheel cylinder.

I would take the time to inspect the other parts of the brake system just to make sure there is nothing corroded or damaged and could possibly cause another leak or failure.

...
2008 Saturn Aura XE 3.5-Sport tuning T10 wheels-Dynomax bullet/Borla ProXS-eBay intake-Pioneer Premier 12 shallow mount/Kicker CXA600.1
Upgrades coming!

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Old 06-09-2018, 08:46 AM   #4
jwright
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Default Re: brake fluid leak

You were right about the caliper leaking. I decided to take it to the shop. Thanks for the help.

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