Having brake issues - Toyota Yaris Forums

Yaris709 · 03-15-2018, 04:33 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, 07:16 PM

So, you don't have any power assist?

Yaris709 · 03-15-2018, 08:05 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, 07:02 AM

I guess you can look for wet spots anywhere. My guess would be the master cylinder is bypassing.

IllusionX · 03-16-2018, 12:41 PM

Is the brake pedal hard, or you push and it goes to the floor?

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IllusionX · 03-16-2018, 01:48 PM

Quote:

Originally Posted by Acura_reaper

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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Then your master cylinder must have issue IMO.

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IllusionX · 03-16-2018, 02:02 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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IllusionX · 03-16-2018, 04:21 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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IllusionX · 03-16-2018, 04:46 PM

Quote:

Originally Posted by Acura_reaper

U 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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Garage. 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, 08:20 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, 08:43 AM

Quote:

Originally Posted by IllusionX

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, 08:51 AM

Quote:

Originally Posted by dogsridewith

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, 10:37 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.

Quote:

Originally Posted by IllusionX

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, 10:40 AM

Quote:

Originally Posted by WeeYari

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, 10:40 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, 11:51 AM

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

03-15-2018, 04:33 PM	#1
Yaris709 Drives: 07 yaris Join Date: Dec 2016 Location: Newfoundland Posts: 99	Having brake issues 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?

03-16-2018, 12:41 PM	#5
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,887	Is the brake pedal hard, or you push and it goes to the floor? Sent from my SM-G930W8 using Tapatalk __________________

03-16-2018, 02:02 PM	#7
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,887	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 Tapatalk __________________

03-16-2018, 04:21 PM	#8
IllusionX It's the illusion you see View User's Garage Drives: 07 Yaris Sedan Aero Join Date: Oct 2006 Location: Brossard, QC Posts: 3,887	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 Tapatalk __________________

03-17-2018, 11:51 AM	#16
tmontague View User's Garage Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012 Location: Caledonia Ont. Posts: 2,930	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 __________________ No one ever wants to give a Yaris the point by...

03-15-2018, 07:16 PM	#2
ex-x-fire Drives: 2010 yaris 3 door hatch Join Date: Jun 2013 Location: Sheboygan Falls, Wi. Posts: 551	So, you don't have any power assist?

03-15-2018, 08:05 PM	#3
Yaris709 Drives: 07 yaris Join Date: Dec 2016 Location: Newfoundland Posts: 99	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

03-16-2018, 07:02 AM	#4
ex-x-fire Drives: 2010 yaris 3 door hatch Join Date: Jun 2013 Location: Sheboygan Falls, Wi. Posts: 551	I guess you can look for wet spots anywhere. My guess would be the master cylinder is bypassing.

03-16-2018, 08:20 PM	#10
Yaris709 Drives: 07 yaris Join Date: Dec 2016 Location: Newfoundland Posts: 99	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

03-17-2018, 10:40 AM	#15
ex-x-fire Drives: 2010 yaris 3 door hatch Join Date: Jun 2013 Location: Sheboygan Falls, Wi. Posts: 551	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.

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