Brake Pedal goes to Floor

gt crazy · 01-26-2008

i think i found the problem. today i was changing the oil and noticed on my coil that one of the bolts were stripped that hold one of the metal peices that hold wiring on was VERY loosed. so i put a smaller nut on and now its tighter. i dont know if that fixed it cuz it just so happens my master cylinder went out when i was bleeding on the brakes today. now i gotta get a new master cylinder and put it on then drive the car and see if it "turns off" again. so ill let you know in a couple of days if that was it. in the mean time the opel is gonna be parked. till i get a new master cylinder.

Anonymous D · 01-26-2008

You may not need a new master cylinder (they're harder to find now too).

If the master ran out of fluid during the brake bleeding process, it could mean that air found its way into the lines (simulating a failure condition). If so, more bleeding (including the master itself, as well as at the 4 wheels) could cure that.

Alternately, it's rare that a master just quits. Usually that means an internal seal (or the external 2 reservoir seals) became damaged. If so, seals themselves are available in master rebuild kits (sold by Opel retailers). I would hone the bore of the master cylinder, just to remove residual and potentially-damaging internal rust too.

Instructions on how to rebuild a GT master cylinder are also available in the June 2004 OMC Blitz.

gt crazy · 01-26-2008

well my brakes never worked properlly thats why i was bleeding them out hopeing to cure the problem. and i did bleed all 4 tires out for about 1 hour and a half and nothing happened. and napa actually sells master cylinder on the internet for 50 bucks im gonna fiddle with my master cylinder tomorrow and order a new one.

wrench459 · 01-26-2008

Off topic again
Why were you bleeding the brakes in the first place?

gt crazy · 01-26-2008

cuz my brakes were going straight to the floor once in a while so i thought there was air in the system. but then it just completly stopped working

kwilford · 01-27-2008

Moderator Note: No less than THREE topics in the thread this originated from. Posts split off to new thread

01-26-2008	#1 (permalink)
gt crazy Member Join Date: Jul 2007 Location: st.louis Posts: 327	Unanswered: i think i found the problem. today i was changing the oil and noticed on my coil that one of the bolts were stripped that hold one of the metal peices that hold wiring on was VERY loosed. so i put a smaller nut on and now its tighter. i dont know if that fixed it cuz it just so happens my master cylinder went out when i was bleeding on the brakes today. now i gotta get a new master cylinder and put it on then drive the car and see if it "turns off" again. so ill let you know in a couple of days if that was it. in the mean time the opel is gonna be parked. till i get a new master cylinder.

01-26-2008	#2 (permalink)
Anonymous D Opeler Join Date: Aug 2004 Location: Planet Earth Posts: 502 Provided Answers: 3	Brake Pedal goes to Floor You may not need a new master cylinder (they're harder to find now too). If the master ran out of fluid during the brake bleeding process, it could mean that air found its way into the lines (simulating a failure condition). If so, more bleeding (including the master itself, as well as at the 4 wheels) could cure that. Alternately, it's rare that a master just quits. Usually that means an internal seal (or the external 2 reservoir seals) became damaged. If so, seals themselves are available in master rebuild kits (sold by Opel retailers). I would hone the bore of the master cylinder, just to remove residual and potentially-damaging internal rust too. Instructions on how to rebuild a GT master cylinder are also available in the June 2004 OMC Blitz.

01-26-2008	#3 (permalink)
gt crazy Member Join Date: Jul 2007 Location: st.louis Posts: 327	well my brakes never worked properlly thats why i was bleeding them out hopeing to cure the problem. and i did bleed all 4 tires out for about 1 hour and a half and nothing happened. and napa actually sells master cylinder on the internet for 50 bucks im gonna fiddle with my master cylinder tomorrow and order a new one. Last edited by gt crazy; 01-26-2008 at 11:21 PM.

01-27-2008	#6 (permalink)
kwilford Über OpelGT.com Moderator Join Date: Mar 2002 Location: Calgary, Alberta, Canada Posts: 4,087 Real Name: Keith Wilford Provided Answers: 4	Moderator Note: No less than THREE topics in the thread this originated from. Posts split off to new thread __________________ Keith Wilford working on my '71 GT and '75 SportWagon

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01-26-2008	#5 (permalink)
gt crazy Member Join Date: Jul 2007 Location: st.louis Posts: 327	cuz my brakes were going straight to the floor once in a while so i thought there was air in the system. but then it just completly stopped working

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