Honda Prelude Forum
 
Go Back   Honda Prelude Forum > Tech-Talk > 5th Gen Honda Prelude

Thread Title
Help needed....... brake pedal softer then soft

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 03-13-2012, 11:27 AM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Help needed....... brake pedal softer then soft

So here's the deal, just bought the car this weekend for cheap (or what I thought would be cheap) and driving it home from work yesterday the brake light came on. No big deal I thought so I put some fluid into both the master cylinder and the res. The fluid in the master is clean and new looking however the res looks dirty and old. Now all of a sudden my brake pedal goes pretty much to the floor and it pulls to the left... so I'm left with the question where do I start? Flush the system? Change brake pads or is it the master cylinder (clean vs dirty fluid in res) or am I missing something else..... any help would be great
Reply With Quote
  #2 (permalink)  
Old 03-13-2012, 12:42 PM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Re: Help needed....... brake pedal softer then soft

Also I forgot to add that when it is stopping it pulls to the left but with no grinding or other noises, other then the air noise I get when depressing the pedal
Reply With Quote
  #3 (permalink)  
Old 03-13-2012, 04:24 PM
M_Stack's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Brampton, Ontario
Posts: 272
iTrader: (0)
M_Stack is on a distinguished road
Re: Help needed....... brake pedal softer then soft

you likely have a leak in the system. or there is air in your lines. and air can be compressed unlike brake fluid. if its pulling to the left then your right brakes probly aren't even working that much. have you checked your fluid level to see if its lowered since you added that fluid? you might start with servicing the brakes and bleeding the lines to make sure there is no air in the lines. make sure your reservoir stays topped up though cause if you get air in through the master cylinder, bleeding all those lines could be a real B***. have you noticed any brake fluid or fluid leaks under where you park? a good way to test if there is air in the system is to pump up your pedal to where it feels about normal and then let go, then wait 15 or 20 seconds or so and if it goes down to the floor then its for sure air. i dunno.. try some of that stuff and see if it helps.
Reply With Quote
  #4 (permalink)  
Old 03-13-2012, 04:25 PM
M_Stack's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Brampton, Ontario
Posts: 272
iTrader: (0)
M_Stack is on a distinguished road
Re: Help needed....... brake pedal softer then soft

sorry i should clarify that. after waiting 15 or 20 seconds or so, press the pedal again and if it is really soft again then its for sure air.
Reply With Quote
  #5 (permalink)  
Old 03-14-2012, 02:29 AM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Re: Help needed....... brake pedal softer then soft

Yeah that was one of the first things I tried and no matter how long I pump them for while the car is running I can't get the peddle to firm up.... when I bought the car the level was full however after about 20 min into the drive home (2.5 hour drive) the brake light came on and I figured it was low but it was late and I didn't want to stop to I topped it off in the morning and the level hasn't gone down at all. Yeah bleeding the lines was going to be my first task just haven't had the time since.... so much for thinking my 2000 dollar ebay buy was a steal if this turns out to be more of an issue.... plus the wobbly crank that I already have on order... no check engine light however...... ill post when I give the bleeding a try
Reply With Quote
  #6 (permalink)  
Old 03-14-2012, 10:16 AM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Re: Help needed....... brake pedal softer then soft

So got into it today and found my leak..... left rear caliper had a leak at the fitting where the line went it. Looks like they cross threaded the bolt at some point because only two threads were holding it in and the ones on the caliper it self were toast.... new caliper later (pricey) and I'm going to be good as new.... next up crank pully..... thanks for the help
Reply With Quote
  #7 (permalink)  
Old 03-14-2012, 04:16 PM
M_Stack's Avatar
Silver Member
 
Join Date: Jan 2011
Location: Brampton, Ontario
Posts: 272
iTrader: (0)
M_Stack is on a distinguished road
Re: Help needed....... brake pedal softer then soft

glad you found the problem. you should replace the flex line and banjo fitting as well if the threads were crossed. just to be sure that it won't leak again. look around though for a caliper cause i just did my rear brakes completely and the calipers were less than 100 bucks each. good luck with everything.
Reply With Quote
  #8 (permalink)  
Old 03-14-2012, 05:25 PM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Re: Help needed....... brake pedal softer then soft

Yeah I did call around and the only one in the area without waiting for days was 125 new same with the banjo fitting there was none in the area... so I took a die set to the fitting since only the last few threads on that were chewed up and everything there is right and true..... my crank pully however is a different story.... removed my pullyand that its self seems fine, rolls true on my work bench the end of the crank is a little worn.... is this normal? ... I don't have the cash for a new crank and I'm kind of stuck as to what I should do? Do I throw the new pully and keyway in and hope for the best or I don't know... this has turned into too much for the day.....
Reply With Quote
  #9 (permalink)  
Old 03-15-2012, 10:13 AM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Help needed....... brake pedal softer then soft

Wobbly crank pulley's are most usually due to worn keys/keyways. If the key itself is all chewed up, but the keyways on both the crank and pulley are good, than you should consider yourself lucky.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
  #10 (permalink)  
Old 03-15-2012, 10:21 AM
I'm New
 
Join Date: Mar 2012
Posts: 15
iTrader: (0)
capace is on a distinguished road
Re: Help needed....... brake pedal softer then soft

Notch on the crank is still good and the pully is very so slightly worn..... replacing both the keyway and pully after work..... fingers crossed and if it doesn't work guess its just gonna have to work till it goes out and I'll just start on a new engine build up..... any good places to pick up a used engine or block? Lol
Reply With Quote
  #11 (permalink)  
Old 03-15-2012, 10:27 AM
twokexlv6coupe's Avatar
little green ghouls, buddy!!
Photobucket
 
Join Date: Apr 2006
Location: kitten mittens
Posts: 17,844
iTrader: (9)
twokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond reputetwokexlv6coupe has a reputation beyond repute
Send a message via AIM to twokexlv6coupe
Re: Help needed....... brake pedal softer then soft

An entire longblock?
Specializing in JDM-USDM Engines & Parts...hmotorsonline.com


A bare/shortblock that you wanna build?
craigslist.
__________________

1995 Honda Prelude SE Turbo; 250whp, 275wtq @ 10psi Soldddd!!!

2000 Acura TL; DD
2005 Stage2.5+ Subaru WRB STi : RzKar!
Ivey Tuned - Advan - Cobb - Rallispec - CP - Perrin - ACT - KillerB - Carillo - TurboXS - Defi - Innovate - Walbro - DeatschWerks - Feal - H&R - Alpine - Infiniti - Curt

2001 Kawasaki STX1100 D.I. - Sold!
2007 Sea-Doo RXT 215; ET 127 +3 S/C impeller, DIY 3" intake, DIY resonator delete/free flow exhaust, DIY oil catch can, Rule 500gph bilge pump


Quote:
Originally Posted by Brash View Post
But you need that scoop on the hood. Is it true that they're big enough to fit your lunch box and all your camera gear in it?
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
SUS: universal - How to Diagnose Brake Pedal Pulsation front or rear rotors. TheJDMAsian DIY Suspension & Brakes 2 02-01-2012 01:34 PM
Erratic idle and losing brake pedal when running. JonnyB 4th Gen Honda Prelude 9 08-18-2009 08:41 PM
Admin Assitance Required + Brake help needed 408Honda General Tech Talk 6 05-02-2009 12:54 PM
soft brake pedal after legend conversion-- dunno what else to do--- help! starbai Stance 6 12-11-2008 06:03 AM
brake pedal going soft? Poidem 2nd Gen Honda Prelude 4 11-27-2007 11:53 PM


All times are GMT -4. The time now is 06:29 AM.



Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors


Copyright © 2006-2009 PreludeZone.com All Rights Reserved.