Laurie Member 5 Member For: 15y 8m 8d Posted 20/09/11 12:35 AM Share Posted 20/09/11 12:35 AM Hi Guys, has anyone experienced or heard of a poor performance issue on emergency or panic stops? When you have to really stand on the pedal because you have been cut off Etc, the pedal goes rock hard and very little braking occurs. ABS is NOT activated. Just not much happens when you really need it.Appreciate you time Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 2m 16d Gender: Male Location: Probably above atmospheric pressure Posted 20/09/11 05:26 AM Share Posted 20/09/11 05:26 AM Mate you better get that looked at by a brake specialist ASAP! Mine was always fine stock, still uses the stock calipers now after getting power upgrades. Link to comment Share on other sites More sharing options...
PhilMeUp Member 1,045 Member For: 16y 6m 24d Gender: Male Location: Perth, Western Australia Posted 20/09/11 06:31 AM Share Posted 20/09/11 06:31 AM Replace your brake fluid. Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 2m 16d Gender: Male Location: Probably above atmospheric pressure Posted 20/09/11 12:19 PM Share Posted 20/09/11 12:19 PM (edited) My fluid was waaaaaaaaay past its use by date and I never had this problem?But it can't hurt to change it. How old is your brake fluid? Edited 20/09/11 12:28 PM by -SteveR- Link to comment Share on other sites More sharing options...
Laurie Member 5 Member For: 15y 8m 8d Posted 21/09/11 03:39 AM Author Share Posted 21/09/11 03:39 AM Brake fluid is about 12 months since the last flush, pads 50%, rotors were replaced with the last pads. Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 18d Gender: Male Location: Perth Posted 21/09/11 04:01 AM Share Posted 21/09/11 04:01 AM How many K's on the car? What pads/discs are installed? Link to comment Share on other sites More sharing options...
Laurie Member 5 Member For: 15y 8m 8d Posted 22/09/11 01:44 AM Author Share Posted 22/09/11 01:44 AM 70K on the clock, Aftermarket rotors (cant remember) and TWR pads.Logically I think the only thing that would cause this is a booster issue. Just wanted to know if anyone has experienced this before.Thanks Link to comment Share on other sites More sharing options...
Wenier Donating Members 1,736 Member For: 15y 23d Gender: Male Location: Christchurch, New Zealand Posted 23/09/11 09:13 PM Share Posted 23/09/11 09:13 PM Do you get any shudder through the vehicle at all? Link to comment Share on other sites More sharing options...
DC666 Inactive Members 1 Member For: 13y 5m 4d Posted 24/09/11 02:07 PM Share Posted 24/09/11 02:07 PM I have actually noticed this once (only had my bf II for 2000kms) but I was in city traffic and shifted into 1st (semi auto) instead of 3rd (missus has a semi automatic the other way around so it took a little bit to get used to) and I shot foward so I quickly grabbed the brake (about 20% to 30% of the pedal using toes only, no knee bending) and it felt like I was pushing a brick wall. I wasnt breaking hard enough to notice a reduced amount of stopping force, and as for shutter, I only seem to get it whilst lightly braking and turning slightly (5-10 degree bend) Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 4m 18d Gender: Male Location: Perth Posted 25/09/11 01:09 AM Share Posted 25/09/11 01:09 AM 70K on the clock, Aftermarket rotors (cant remember) and TWR pads.Logically I think the only thing that would cause this is a booster issue. Just wanted to know if anyone has experienced this before.ThanksWith the engine off pump the pedal until all the vac assist is gone ( the pedal will go hard)Start the engine and the pedal should drop slightly and soften up. If it doesn't it would suggest an issue with the booster.If why the engine off pump the pedal doesn't cause it too go hard ( IE you can push the pedal too the floor) I'd be looking at air in the system (quite common with the factory brakes if they aren't bled correctly) Link to comment Share on other sites More sharing options...
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