Major brake issues on 98
Thread Starter
Heel & Toe
Joined: Aug 2003
Posts: 17
Likes: 0
From: Nashville TN
Major brake issues on 88
98,000 miles. Only drive occasionally. For a long time it has seemed that it takes more brake pressure than it should to stop, but not unsafe. Had the opportunity for a track day so I took the car to my mechanic for a look-over. He said the front pads were shot, the brakes had been sticking, the brake lines were no good, etc. He did a ton of work, but now the front brakes stick big-time - short drive and the front wheels are hot!! Mechanic says it is the pressure modulator valve, needs replacing. Part # 12506759. List price $1,773 from dealer!
Is this baloney? Is there anything else I can/should do?
Is this baloney? Is there anything else I can/should do?
Last edited by JohnsTN88; Nov 25, 2009 at 02:12 PM.
Le Mans Master
Joined: Jul 2007
Posts: 5,043
Likes: 8
From: Tampa Florida
If this is a C4 and not a 1998 - Find another shop or maybe a dealership...one with the correct early Bosh ABS style tester and get a second opinion on the system. Get your needed parts from someone parting out a "used" vette.
Race Director
Joined: Apr 2003
Posts: 17,700
Likes: 1,667
From: moraga ca
Sounds like your mechanic is into replacing parts rather than diagnosing the problem. What was wrong with your brake lines? Find a Corvette guy, not an "I can fix anything, show me your credit card mechanic".
Instructor
Joined: Mar 2009
Posts: 230
Likes: 0
had sim problem on my 85 .Brakes would be ok till car warmed up , then brakes would stick.Turns out m/c piston had debris and wouldnt allow piston to return to normal after fluid warmed up .Idle till warm, when car warms disconnect brake master cylinder from booster and tap master cylinder to see if brakes release . My brakes released and turned out to be m/c was bad. You can also turn your adjust rod behind m/c to booster 1/2 turn increments to adjust pedal engagement .Rod should be adjusted to travel approx 1/2 in before engaging m/c to brakes. Good Luck
