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Brakes on 1994 SL2
Hi all-
My 94 SL2 with 180,000 miles is having a brake problem. The car was parked with the emergency brake engaged for 3 weeks, and now the pedal goes to the floor when I try to brake. There was a bit of grab when I first tried to move the car after it sat, and the emergency brake does engage when I pull the handle. But while driving, the pedal goes to the floor and the car slows down very slowly. Thankfully, it was a very short drive on a couple country roads between work and home. The fluid level was/is full, and the brakes were serviced ~1000 miles ago. The car is sitting in the driveway until I can take it apart, hoping someone will point me in the right direction. TIA to all who reply- John |
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#2
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Brakes on 1994 SL2
"John" > wrote in message ups.com... > Hi all- > > My 94 SL2 with 180,000 miles is having a brake problem...... John -- A couple of things come readily to mind: 1. Recent service on the hydraulic portion of the brakes, and 2. Mechanical emergency brake does not use hydraulic system, and it appears to work. Quick thought is an improper brake service, possibly leaving air trapped in the hydraulic lines. Have the brakes bled down again either by the original servicing shop, or some shop you trust. Second possibility is a defective master cylinder (was it changed?), or defective wheel cylinder(s). Are there any puddles under the car if you exercise the braking system without moving? Maybe the vacuum boost on the brake system has failed or is loose, is the engine running smoothly, and does it surge or stutter when you press the beake pedal? These answers might help point out where the problem lies ........ |
#3
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Brakes on 1994 SL2
Wow John, how dangerous can you get?
My take is that your master cylinder has failed. If the problem were simply with the vacuum assist section of your power brakes you'd just have a very hard time pushing the brake pedal hard enough to slow the car down very quickly. Going to the floor sounds as though there's essentially no decent seal in the master cylinder which allows the 'piston' to move down the bore without actually forcing fluid down the lines. You should try to "pump" the brakes - lightly and not very far down. Eventually you should find a buildup of pressure. Please dont drive this car anymore until you get it fixed! -WaV Ocean Archer wrote: > "John" > wrote in message > ups.com... > > Hi all- > > > > My 94 SL2 with 180,000 miles is having a brake problem...... > > > John -- > > A couple of things come readily to mind: > > 1. Recent service on the hydraulic portion of the brakes, and > 2. Mechanical emergency brake does not use hydraulic system, and it > appears to work. > > Quick thought is an improper brake service, possibly leaving air trapped in > the hydraulic lines. Have the brakes bled down again either by the original > servicing shop, or some shop you trust. Second possibility is a defective > master cylinder (was it changed?), or defective wheel cylinder(s). Are > there any puddles under the car if you exercise the braking system without > moving? Maybe the vacuum boost on the brake system has failed or is loose, > is the engine running smoothly, and does it surge or stutter when you press > the beake pedal? These answers might help point out where the problem lies > ....... |
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