Brakes

velasco98 · March 3rd, 2011, 09:24 PM

I was driving my car yesterday and my brake pedal felt hard like a rock when I pressed it for the second or third time. Then when I keep driving it gets soft again. Until I press it two or three times. My brakes pads are fine. What could it be?

F8L GT · March 3rd, 2011, 09:28 PM

sounds like you have a small leak somewhere or you are low on fluid.

velasco98 · March 3rd, 2011, 09:35 PM

No the fluid seems fine but I'll check the lines. Can it also be that the brake fluid is too old?

ryanw · March 3rd, 2011, 10:36 PM

may be the brake booster

velasco98 · March 4th, 2011, 01:16 AM

How do I know if it's good? I Also saw a brake booster delete in summit was does it do?

fogged306 · March 4th, 2011, 01:40 AM

Originally Posted by ryanw

may be the brake booster

+1, if the brakes get rock hard then it's either the booster going bad, or it's the booster not getting enough vacuum. Check the vacuum line for cracks and if it looks good it could be your booster on it's way out.

velasco98 · March 4th, 2011, 03:19 AM

I could upgrade my booster and master cylinder for rear disk brakes if it's going bad.

fogged306 · March 4th, 2011, 10:54 AM

Does it do that cycle of getting tough to press and then back to normal every time? If it's doing that on a pretty consistent basis, it might be the check valve on the booster. No idea if the one on a fox is accessable or not, but it's worth checking first. It should be right on the booster where the vacuum line plugs in. I'm not in the same state as my car right now or I would go check first so I don't know if this is even a valid thing to check.

velasco98 · March 4th, 2011, 01:25 PM

Yea it does that hard to press cycle and then it gets soft. It does it like everyday now.I'll go check that check valve see if it helps

March 3rd, 2011, 09:24 PM	#1
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	Brakes I was driving my car yesterday and my brake pedal felt hard like a rock when I pressed it for the second or third time. Then when I keep driving it gets soft again. Until I press it two or three times. My brakes pads are fine. What could it be?

March 3rd, 2011, 09:28 PM	#2
F8L GT !FACEPLATED! 2002 Mustang GT 7.84 @ 86.01 Join Date: Jul 2008 Location: Upper Michigan Posts: 12,917 iTrader: 13 reviews	sounds like you have a small leak somewhere or you are low on fluid. __________________ MM Bracket Racing Crew Co-Founder ~Its a Drag Car, Not a Show Car~ LINK-->Custom Race Transmission Build<--LINK

March 3rd, 2011, 10:36 PM	#4
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	may be the brake booster __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

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March 3rd, 2011, 09:35 PM	#3
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	No the fluid seems fine but I'll check the lines. Can it also be that the brake fluid is too old?

March 4th, 2011, 01:16 AM	#5
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	How do I know if it's good? I Also saw a brake booster delete in summit was does it do?

March 4th, 2011, 03:19 AM	#7
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	I could upgrade my booster and master cylinder for rear disk brakes if it's going bad.

March 4th, 2011, 10:54 AM	#8
fogged306 MM Fanatic 89 GT Join Date: Apr 2007 Location: NY Posts: 4,875 iTrader: 2 reviews	Does it do that cycle of getting tough to press and then back to normal every time? If it's doing that on a pretty consistent basis, it might be the check valve on the booster. No idea if the one on a fox is accessable or not, but it's worth checking first. It should be right on the booster where the vacuum line plugs in. I'm not in the same state as my car right now or I would go check first so I don't know if this is even a valid thing to check.

March 4th, 2011, 01:25 PM	#9
velasco98 Regular 93 Mustang Gt Join Date: Jan 2011 Location: Gilroy CA Posts: 53 iTrader: 0 reviews	Yea it does that hard to press cycle and then it gets soft. It does it like everyday now.I'll go check that check valve see if it helps

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