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Yaris709
03-15-2018, 05:33 PM
Having issues with the brake pressure in my 2007 yaris sedan. When I first start up the car I have no brake pressure and can't stop. Once i get going down the road a bit the brakes work perfect again. Seems to only happen for a few seconds after start up and driving. Anyone have an idea what could my problem be?
ex-x-fire
03-15-2018, 08:16 PM
So, you don't have any power assist?
Yaris709
03-15-2018, 09:05 PM
Nope I loose break pressure (and car can't stop) for a few seconds on a cold start of the car. After driving for a few seconds it seems fine again
ex-x-fire
03-16-2018, 08:02 AM
I guess you can look for wet spots anywhere. My guess would be the master cylinder is bypassing.
IllusionX
03-16-2018, 01:41 PM
Is the brake pedal hard, or you push and it goes to the floor?

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Acura_reaper
03-16-2018, 02:46 PM
I just rear endend a focus yesterday cuz my brakes went to the floor. Broke my grille but did nothing to their car go figure.

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IllusionX
03-16-2018, 02:48 PM
I just rear endend a focus yesterday cuz my brakes went to the floor. Broke my grille but did nothing to their car go figure.

Sent from my VS996 using TapatalkThen your master cylinder must have issue IMO.

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Acura_reaper
03-16-2018, 02:57 PM
Then your master cylinder must have issue IMO.

Sent from my SM-G930W8 using TapatalkIll have to check it. I replaced my front brake pads bled the brakes snd checked fluid and lines it looked good. it seems a lil bit stiffer but my pedel is spongy.i dont know. Their really ait much else it could be. Maybe back brakes idnhttps://uploads.tapatalk-cdn.com/20180316/be7a93c43f371d52c90a588c446f7328.jpg

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IllusionX
03-16-2018, 03:02 PM
Pull hand brake if you are not getting brake response...

IMO you shouldn't have driven your car when you knew you had brake problems.

Brake fluid should be changed after a while AFAIK.

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Acura_reaper
03-16-2018, 04:43 PM
Pull hand brake if you are not getting brake response...

IMO you shouldn't have driven your car when you knew you had brake problems.

Brake fluid should be changed after a while AFAIK.

Sent from my SM-G930W8 using TapatalkYour right but when you have to go to work you go to work

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IllusionX
03-16-2018, 05:21 PM
No you don't, or you find another way to get to work and not put others or yourself in danger.

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Acura_reaper
03-16-2018, 05:37 PM
No you don't, or you find another way to get to work and not put others or yourself in danger.

Sent from my SM-G930W8 using TapatalkU dont know my situation so stop trying to tell me what i should do and help me fix my brakes or shut up

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IllusionX
03-16-2018, 05:46 PM
U dont know my situation so stop trying to tell me what i should do and help me fix my brakes or shut up

Sent from my VS996 using TapatalkGarage. Check master cylinder. Told you already.

What if you just FUCKING DIED while going to work with a broken car? Hope you kill someone with your car.



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Yaris709
03-16-2018, 09:20 PM
Alright guys enough with the arguing haha I'm just wondering why my cars brake pressure was temporarily lost for a few seconds. On a side note it was fine today never had any trouble at all. This is a weird problem
dogsridewith
03-17-2018, 09:43 AM
Is the brake pedal hard, or you push and it goes to the floor?

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OP will get better advice here if e answers this question. (A pedal on the floor or a high pedal w/ failed boost will both reduce "brake pressure," but would likely have different causes.)
IllusionX
03-17-2018, 09:51 AM
OP will get better advice here if e answers this question. (A pedal on the floor or a high pedal w/ failed boost will both reduce "brake pressure," but would likely have different causes.)High brake is likely failed vacuum, but a pedal to the floor is either air in system or master cylinder.

Now, op already checked for brake line leak, and bled. Provided he did good/proper maintenance, all I can think of is the master cylinder having issues.

Eitherway, OP said his pedal went to the floor, I did suggest it was the master cylinder, stop driving the car as it is very dangerous.But well, looks like I know nothing, so I'll just let OP drive his car around trying to kill some innocent people



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WeeYari
03-17-2018, 11:37 AM
Please note that there are two individuals with brake issues contributing to this thread.

The OP did not make the statements you are referencing.


Now, op already checked for brake line leak, and bled. Provided he did good/proper maintenance, all I can think of is the master cylinder having issues.
IllusionX
03-17-2018, 11:40 AM
Please note that there are two individuals with brake issues contributing to this thread.

The OP did not make the statements you are referencing.Nice thread hi-jack. SMH

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ex-x-fire
03-17-2018, 11:40 AM
If the pedal goes to the floor, do this, pinch off all 4 brakes hoses, is the pedal still low? If yes then its most likely the m/c. If not, then release each brake hose until the pedal drops. That will tell you which part of the car is causing issues. You'll need a helper to hold the pedal down.
tmontague
03-17-2018, 12:51 PM
Wee is correct. The OP - Yaris709 had the original issue

Acura_reaper hijacked the thread with a random comment about getting into a crash when his brakes hit the floor. He also never claimed to have previous knowledge of his brakes failing which the OP did.

Lets keep the thread for the OP and limit confusion