|
|
Register To Post |
| highrider | 92 Brake Console Light | ||
|
Guru Newb
 
|
Hello, fellows, my 92 ( 59k) today for the first time when starting after driving a few hours, the brake pedal went easily almost to the floor, I then noticed the brake alarm came in, I had to drive a littler and slowly the pedal firmed up and the brake alarm light went out. I check the manual and it says the light is a differential alarm and should not go out until something is repaired etc.
The brake master cylinder is full ( dark oil, new pads 3k ago) Is the master cylinder starting to fail? If so what other indictaions should I expect? No ASR alarms in. Any ideas ? Thanks Highrider Las Vegas |
||
Posted on: 2010/6/7 4:09
|
|||
 Transfer
|
 
|
||
| RickAnthony | Re: 92 Brake Console Light | ||
|
ASE Master Certified
 
|
I would check for a leak someplace, but it sounds like it could be the master cycl. starting to fail..
-=Rick |
||
Posted on: 2010/6/7 4:12
|
|||
|
_________________
My Automotive Blog autoserviceupdated.blogspot.com CORVETTE SERVICE & REPAIR RickAnthonyMotorsports.NET |
|||
|
Transfer
|
|
||
| highrider | Re: 92 Brake Console Light | ||
|
Guru Newb
|
Thanks no leaks, how pricey is a master cylinder repair, Typically
|
||
Posted on: 2010/6/7 4:28
|
|||
|
Transfer
|
|
||
| bogus | Re: 92 Brake Console Light | ||
|
Grand Imperial Pooh-Bah
 
|
I would bleed the system, if nothing else.
If the brake fluid is black, it MUST be replaced. Check the master cylinder for leaks. If you see wet where the master meets the power brake booster, you have a leak. But that doesn't mean that the master is still ok... if the internal seal is bad, you won't ever get a good FIRM pedal. Use a good brake fluid. Motul, Ford Motorsports are some of the better fluids. Use DOT 3 or DOT 4. Do NOT use DOT 5. Read this: Brake Fluids |
||
Posted on: 2010/6/7 4:32
|
|||
|
_________________
The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
|||
|
Transfer
|
|
||
| Matatk | Re: 92 Brake Console Light | ||
|
Webmaster
 
|
I would agree with what was said. First thing I would try is bleeding the brakes, but there's a good chance the internal seals are leaking in the MC.
As far as cost, are you replacing it yourself or having a shop do it? The part (remanufactured) should run around $225 - maybe higher or lower depending on who/where. Shop would probably charge a couple hundred to install and bleed the system. Matthew |
||
Posted on: 2010/6/7 11:40
|
|||
|
_________________
2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
|||
|
Transfer
|
|
||
| Fluff | Re: 92 Brake Console Light | ||
|
Senior Guru
 
|
My 93 had the exact same symptoms (DIC light coming on and black fluid). I wont say I was right, but I decided not to bleed the brakes because I assumed it would be pumping all the old black fluid and contaminants through the brake and ASR system (if it hadnt already got there)
just my way of thinking!?
I did remove and strip down the master cylinder. I found the proportioning valve gummed up and not being able to move freely. I didnt have any new seals for the MC so I thoroughly cleaned everything in the MC and reassembled. Only then did I flush and bleed the system with new fluid. I dont usually prat around with brakes or steering, so I ordered a new MC, however 10,000km later and the repair hasnt given one problem nor a brake warning light, so the new MC is just sitting in the garage. Just my experience, but the guy's above have tons more vette knowledge than me and their advice is undoubtedly better. |
||
Posted on: 2010/6/7 12:48
|
|||
|
_________________
93 LT1 Coupe. |
|||
|
Transfer
|
|
||
| BillH | Re: 92 Brake Console Light | ||
|
The Stig Moderator
 
|
Yea, like Bogas said, bleed it and check for leaks. I don't think I'd spend money on higher dollar fluid right now though, unless you use the brakes very hard. I'd use a good regular price fluid until you find out if the fluid change fixes things.
I's put in Castrol LMA, it does have a higher boiling point than most off the shelf fluids. And you can usually find it at Pep Boys. It's what I use in the racecars (lighter weight), my 92 and my pickup. |
||
Posted on: 2010/6/7 13:07
|
|||
|
_________________
Every man dies but not every man lives. |
|||
|
Transfer
|
|
||
| bogus | Re: 92 Brake Console Light | ||
|
Grand Imperial Pooh-Bah
|
Quote:
To be honest, the ABS system is a passive stand alone component of the brake system. It's fluid, is separate from the main line fluids. This is why bleeding the brakes is no different from an ABS system and non-ABS system. This is also why, if the ABS fails, the brakes continue to function as normal. |
||
Posted on: 2010/6/7 13:59
|
|||
|
_________________
The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
|||
|
Transfer
|
|
||
| bogus | Re: 92 Brake Console Light | ||
|
Grand Imperial Pooh-Bah
|
Quote:
How times change... I got my reman master cylinder about 8 years ago for $40.00!!! Rockauto has a reman for $85, plus core. |
||
Posted on: 2010/6/7 14:02
|
|||
|
_________________
The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
|||
|
Transfer
|
|
||
| Fluff | Re: 92 Brake Console Light | ||
|
Senior Guru
|
Quote:
Correct me if I'm wrong Andy, but on my 93 the brake lines run through the ASR/ABS module behind the drivers seat. At least that's what the FSM say's. This is why I did not want to pump contaminated fluid through it ??? |
||
Posted on: 2010/6/7 14:15
|
|||
|
_________________
93 LT1 Coupe. |
|||
|
Transfer
|
|
||
| bogus | Re: 92 Brake Console Light | ||
|
Grand Imperial Pooh-Bah
|
they do, but the fluids don't mix.
I don't know how the ABS pumps work, but they don't pump the actual brake fluid... it is kinda like a remote pumping effect thing happening. |
||
Posted on: 2010/6/7 14:23
|
|||
|
_________________
The single biggest problem with communication is the illusion that it has taken place. - George Bernard Shaw Education is the best tool to overcome irrational fear. - me |
|||
|
Transfer
|
|
||
| Fluff | Re: 92 Brake Console Light | ||
|
Senior Guru
|
Quote:
Thats strange Andy. The FSM say's there is a bleed valve on the ASR/ABS module and it did in fact bleed out fluid when I pumped new fluid through!... oh well mystery to me! |
||
Posted on: 2010/6/7 14:46
|
|||
|
_________________
93 LT1 Coupe. |
|||
|
Transfer
|
|
||
You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
|
|