GT3 RS brake fade.
03-13-2007, 12:02 PM
#1
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GT3 RS brake fade.
After about 10 minutes of reasonably brisk on road driving the brake pedal on my 997 GT3 RS went to the floor.
Never had this happen so extremely on any other car during road driving.
After about another 10 mins of driving very slowly and pumping brake pedal the brakes recovered to close to former glory.
Got ceramics.
Anyone else had similar problem?
Never had this happen so extremely on any other car during road driving.
After about another 10 mins of driving very slowly and pumping brake pedal the brakes recovered to close to former glory.
Got ceramics.
Anyone else had similar problem?
03-13-2007, 01:15 PM
#2
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Originally Posted by PSC
After about 10 minutes of reasonably brisk on road driving the brake pedal on my 997 GT3 RS went to the floor.
Never had this happen so extremely on any other car during road driving.
After about another 10 mins of driving very slowly and pumping brake pedal the brakes recovered to close to former glory.
Got ceramics.
Anyone else had similar problem?
Never had this happen so extremely on any other car during road driving.
After about another 10 mins of driving very slowly and pumping brake pedal the brakes recovered to close to former glory.
Got ceramics.
Anyone else had similar problem?
03-13-2007, 01:47 PM
#4
Burning Brakes
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Yeah that is definitely NOT brake fade! You might be running out of fluid or maybe air in the brake lines. I'd exercise caution if you choose to drive back to the dealership.
03-13-2007, 04:50 PM
#5
Still plays with cars.
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PSC - was this on a brand new car? Failure to properly bed the pads could cause the condition your report. If the car was not brand new, check to see if the holes in the rotors are plugged. This is common with ceramics and hard braking will produce high temps which in turn cause a mushy pedal and longer than normal stopping distances.
Regards,
Regards,
03-13-2007, 05:14 PM
#6
Rennlist Member
Originally Posted by Bob Rouleau
PSC - was this on a brand new car? Failure to properly bed the pads could cause the condition your report. If the car was not brand new, check to see if the holes in the rotors are plugged. This is common with ceramics and hard braking will produce high temps which in turn cause a mushy pedal and longer than normal stopping distances.
Regards,
Regards,
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03-13-2007, 09:39 PM
#8
Nordschleife Master
Brake pedal to the floor????
This is not a minor issue. Have them flatbed it to the dealer, it's just not worth handling any other way if you get the meaning. In fact, you might want a new system installed, a/o have them "noticed" if they refuse.
No kidding, I would.
Lou, I drove my PCCB TT in 6 in of snow and deeply freezing temps. They never even flinched.
This is not a minor issue. Have them flatbed it to the dealer, it's just not worth handling any other way if you get the meaning. In fact, you might want a new system installed, a/o have them "noticed" if they refuse.
No kidding, I would.
Lou, I drove my PCCB TT in 6 in of snow and deeply freezing temps. They never even flinched.
03-14-2007, 12:06 AM
#9
Still plays with cars.
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E55 - on a street car, just take it easy on the brakes for the first 100 miles. If track driven, follow the instructions on the PagidUSA web site. There is nothing special about bedding pads on PCCB.
Regards,
Regards,
03-14-2007, 06:39 PM
#11
Three Wheelin'
Originally Posted by PSC
Thanks.
Car flatbed back to dealer yesterday.
Temp warm 15C and 800m on trip.
Car three months old.
Will report back when problem resolved.
Car flatbed back to dealer yesterday.
Temp warm 15C and 800m on trip.
Car three months old.
Will report back when problem resolved.
03-16-2007, 01:08 PM
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Porsche Centre finally come back to say Porsche GB advised draining in case air in system. If no air would replace various components to be on safe side.
My guess is that it must be air because no warning lights came on (and I assume should have done if low fluid or electrical issue?). I have minimal mechanical knowedge but there can't be many reasons which cause the brake pedal pressure to disappear?
But since I've now done over 800 miles and the brakes have had a good work out over last few hundred miles with no problem, why problem now?
Implies air has recently got into system so not just an issue of draining it out?
My guess is that it must be air because no warning lights came on (and I assume should have done if low fluid or electrical issue?). I have minimal mechanical knowedge but there can't be many reasons which cause the brake pedal pressure to disappear?
But since I've now done over 800 miles and the brakes have had a good work out over last few hundred miles with no problem, why problem now?
Implies air has recently got into system so not just an issue of draining it out?
03-16-2007, 02:05 PM
#13
Rennlist Member
Originally Posted by PSC
Porsche Centre finally come back to say Porsche GB advised draining in case air in system. If no air would replace various components to be on safe side.
My guess is that it must be air because no warning lights came on (and I assume should have done if low fluid or electrical issue?). I have minimal mechanical knowedge but there can't be many reasons which cause the brake pedal pressure to disappear?
But since I've now done over 800 miles and the brakes have had a good work out over last few hundred miles with no problem, why problem now?
Implies air has recently got into system so not just an issue of draining it out?
My guess is that it must be air because no warning lights came on (and I assume should have done if low fluid or electrical issue?). I have minimal mechanical knowedge but there can't be many reasons which cause the brake pedal pressure to disappear?
But since I've now done over 800 miles and the brakes have had a good work out over last few hundred miles with no problem, why problem now?
Implies air has recently got into system so not just an issue of draining it out?
03-16-2007, 02:52 PM
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Felt like about 4 - 5cm free travel with minimal resistance, then mushy resistence with some braking but did not experiment to find out how much.
Drove very slowly for about 5 miles to let things cool down and after repeated pumping, the brakes came back to close to normal and were than okay for a couple of hard stops. By then I was home and flatbedded car to Porsche dealer.
Drove very slowly for about 5 miles to let things cool down and after repeated pumping, the brakes came back to close to normal and were than okay for a couple of hard stops. By then I was home and flatbedded car to Porsche dealer.
03-16-2007, 03:42 PM
#15
Rennlist Member
Originally Posted by PSC
Felt like about 4 - 5cm free travel with minimal resistance, then mushy resistence with some braking but did not experiment to find out how much.
Drove very slowly for about 5 miles to let things cool down and after repeated pumping, the brakes came back to close to normal and were than okay for a couple of hard stops. By then I was home and flatbedded car to Porsche dealer.
Drove very slowly for about 5 miles to let things cool down and after repeated pumping, the brakes came back to close to normal and were than okay for a couple of hard stops. By then I was home and flatbedded car to Porsche dealer.
I had the same experience just the other day when I bedded-in my PCCB pads...car has 520 miles on it.
Other more experienced folks please chime in.