93 GS300 brake pedal falling
#1
Driver School Candidate
Thread Starter
Join Date: Apr 2010
Location: FL
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
93 GS300 brake pedal falling
Hi,
On my gs300 the brake pedal keeps going to the floor.
1st - I changed the brake pads in the rear, (they were a little low) the front pads are good and no fluid is leaking.
2nd - I blead the back brakes and got a good stream of fluid on both sides
I tried to bleed the front and only get a trickle. Still have no breaks.
anyone have a clue where I go next? Brakelines, Master cylinder, splitter valve, Bladder?
On my gs300 the brake pedal keeps going to the floor.
1st - I changed the brake pads in the rear, (they were a little low) the front pads are good and no fluid is leaking.
2nd - I blead the back brakes and got a good stream of fluid on both sides
I tried to bleed the front and only get a trickle. Still have no breaks.
anyone have a clue where I go next? Brakelines, Master cylinder, splitter valve, Bladder?
#7
Yeah you need to bleed your brakes, relatively easy with a friend. You might have air in your brake system , and air will simply compress when you push down the pedel, which may explain your problem. Good luck!
Trending Topics
#8
Pole Position
iTrader: (16)
I am going to bump this back up and see if there is more information on what was going on. When I did my LS400 converison, I had EVERYTHING new. These were the problems I was having.
1. The brakes went on after I grinded the crap out of the caliper and modified suspension parts, but when the rotor was put on, the front wheels would spin 180* and then stop. I was finally able to lift the rotor until it fit perfectly. It was weird. Had a very sensitive sweet spot for some reason?
2. After the brakes were on with new pads and new everything the brakes WOULD NOT bleed. I had 100% all of the air out of the lines. I bled them for HOURS.
3. Uninstalled everything, and the brakes are working just fine stock. I have no CLUE what was going on...
Thats about all of the information I can provide. I just want to see if someone can shed some light,
1. The brakes went on after I grinded the crap out of the caliper and modified suspension parts, but when the rotor was put on, the front wheels would spin 180* and then stop. I was finally able to lift the rotor until it fit perfectly. It was weird. Had a very sensitive sweet spot for some reason?
2. After the brakes were on with new pads and new everything the brakes WOULD NOT bleed. I had 100% all of the air out of the lines. I bled them for HOURS.
3. Uninstalled everything, and the brakes are working just fine stock. I have no CLUE what was going on...
Thats about all of the information I can provide. I just want to see if someone can shed some light,
#9
Keep bleeding. Rr lr rf lf then master. If you still have issues your master may have an internal leak. Bleeding off back into itself. Sounds like bleeding to me though. If youre just getting a trickle then there's a blockage in the caliper.
#11
It's a sealed system so there's only a few things that would cause a pedal to go soft or completely flat.
1.) air in the system
2.) a leak in the system
3.) wrong master. If you upgraded the calipers and what not then the master has to be able to push them.
4.)a faulty master. Bleeding back into itself
5.) air it the system or even.... Air in the system lol
Make sure u have the calipers on the right side. Bleeder screws facing up.
Start bleeding from the furthest point away and work your way to the master. Even crack the lines loose at the proportioning/metering valve if you have to. There's not a whole lot that can go wrong as its a simple system. If you have abs you might have air in the module but since you said they work fine with the stock parts I highly doubt that to be the case. If you installed a new master cylinder than you must bench bleed it before installing or it won't ever be right.
1.) air in the system
2.) a leak in the system
3.) wrong master. If you upgraded the calipers and what not then the master has to be able to push them.
4.)a faulty master. Bleeding back into itself
5.) air it the system or even.... Air in the system lol
Make sure u have the calipers on the right side. Bleeder screws facing up.
Start bleeding from the furthest point away and work your way to the master. Even crack the lines loose at the proportioning/metering valve if you have to. There's not a whole lot that can go wrong as its a simple system. If you have abs you might have air in the module but since you said they work fine with the stock parts I highly doubt that to be the case. If you installed a new master cylinder than you must bench bleed it before installing or it won't ever be right.
#12
Hi,
On my gs300 the brake pedal keeps going to the floor.
1st - I changed the brake pads in the rear, (they were a little low) the front pads are good and no fluid is leaking.
2nd - I blead the back brakes and got a good stream of fluid on both sides
I tried to bleed the front and only get a trickle. Still have no breaks.
anyone have a clue where I go next? Brakelines, Master cylinder, splitter valve, Bladder?
On my gs300 the brake pedal keeps going to the floor.
1st - I changed the brake pads in the rear, (they were a little low) the front pads are good and no fluid is leaking.
2nd - I blead the back brakes and got a good stream of fluid on both sides
I tried to bleed the front and only get a trickle. Still have no breaks.
anyone have a clue where I go next? Brakelines, Master cylinder, splitter valve, Bladder?
#13
Driver School Candidate
Join Date: Feb 2012
Location: Texas
Posts: 49
Likes: 0
Received 0 Likes
on
0 Posts
Ghost Rider
One thing you want to do is first flush your brake fluid, then there is a certain order you have to follow when bleeding a lexus you have to look up that pattern. I think it goes...
REAR RIGHT WHEEL, REAR LEFT WHEEL, FRONT RIGHT WHEEL, FRONT LEFT WHEEL. TH FAR WHEEL IS ALWAYS FIRST AND THEN AS FOLLOWS.
REAR RIGHT WHEEL, REAR LEFT WHEEL, FRONT RIGHT WHEEL, FRONT LEFT WHEEL. TH FAR WHEEL IS ALWAYS FIRST AND THEN AS FOLLOWS.
Thread
Thread Starter
Forum
Replies
Last Post