Jump to content
SAU Community

Recommended Posts

After a few hard brakes and some spirited driving in the gtst, i was cruising down a street and went to hit the brakes and there was nothing there!! The pedal went all the way to the floor, i pumped them then it sort of came back then there was nothing. I left the car at home then the next day went for a drive and everything is perfect again? Though i am feeling very uneasy about braking atm after what happened. Any ideas would be greatly appreciated!

Some of my thoughts:

Brake master cylinder is on the way out?

Brake fluid is crap?

Brakes need to be bled?

Link to comment
https://www.sau.com.au/forums/topic/51141-whats-wrong-with-my-brakes/
Share on other sites

I would guess that you more than likely need the brakes bled and get new fluid. Sounds like you current brake fluid has absorbed a fair bit of water and is boiling really easily, as the spongy pedal is the main symptom of overheating fluid. Don't know what you currently use, but it might be worth upgrading to something like a DOT 5.1 fluid or something along those lines.

If that doesn't fix it, then have a better look at other possible problems.

Cheers,

Jae.

If you have cheap brake pads on it and you were driving hard you may have heated the pads up past their working temperature causing them to lose there resistance which would explain why they worked fine afterwards,(they cooled down) this happens a lot when the pads are low aswell, i dont think it would be the master cyclinder, check for leaks anywhere on the brake line or the master cylinder though.

Thanks mate, i will bleed the brakes the following weekend and change the fluid.
My suggestion would be to take it to the best brake mechanic in your area and explain what happened. You are best off getting new brake fluid (which involves getting them bled). I spent ~9mths with a very bad brake pedal and driving was no fun. It cost well over $2,500 in total, I got everything fixed/upgraded because the feeling of having no brakes is the worst and I was happy to spend money to ensure it doesn't happen again.

Once your fluid has boiled, replace it.

I boiled/cooked my brakes so badly after literally 2x 10 lap sessions (very average speed laps too) at Eastern Creek that it destroyed my brake system. Pedal went to the floor, pumping it did nothing, had to limp home and it basically spent the next week at a workshop and took more than 5 mechanics and ~9mths of mucking around to get the problem solved.

Good quality DOT5.1 will cost about $100 and an hour of their time. Depending on how much damage you have done you may also require new brake pads which could be around $200 all up.

It's fun hitting boost and watching that speedo increase rapidly, it's not fun watching the car infront get closer and closer with your foot already firmly on the pedal.

Sounds like you cooked the brakes. Better pads and fluid should fix it.

The same thing happened in my previous car, which was caused by a faulty handbrake. The master cylinder followed soon after :) It had a similar feeling under the pedal but a lot more expensive to fix.

After a few hard brakes and some spirited driving in the gtst, i was cruising down a street and went to hit the brakes and there was nothing there!! The pedal went all the way to the floor, i pumped them then it sort of came back then there was nothing. I left the car at home then the next day went for a drive and everything is perfect again? Though i am feeling very uneasy about braking atm after what happened. Any ideas would be greatly appreciated!

Some of my thoughts:

Brake master cylinder is on the way out?

Brake fluid is crap?

Brakes need to be bled?

I reckon you should take another driving test?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • For these last 7 years of ownership, I've always had to use a small scissor jack under one of the front tow hooks to raise the front just enough so my low-profile jack fits under to reach my subframe jack point. I'm beginning to get annoyed of always having to do this. Are there any lower low-profile jacks that fit under the gtr lip on a dropped car?
    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
×
×
  • Create New...