Pennock's Fiero Forum
  Technical Discussion & Questions
  Brake Issues

Post New Topic  Post A Reply
Email This Page to Someone! | Printable Version


next newest topic | next oldest topic
Brake Issues by bobojounson
Started on: 08-09-2013 06:51 PM
Replies: 4 (141 views)
Last post by: 85 SE VIN 9 on 08-10-2013 10:17 PM
bobojounson
Member
Posts: 13
From:
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-09-2013 06:51 PM Click Here to See the Profile for bobojounsonSend a Private Message to bobojounsonEdit/Delete MessageReply w/QuoteDirect Link to This Post
I drive an 87 gt (automatic) on a daily basis. And the other day on my way home the brakes just gave out. My pedal went all the way to the floor and it barely slowed down. Once I got home I checked the Master Cylinder Reservoir and both sections are full. I checked under the car and I don't see any leaking fluid and no fluid was around the MC or the brake booster or the vacuum hose up front. So I don't think its a fluid leak. I'm wondering if I have an air leak somewhere or what. But if I had an air leak I feel like the car would idle different. But when I start the car it idles fine. Just the pedal goes all the way to the floor. Does anyone have any tips or Suggestions?
IP: Logged
PFF
System Bot
BlackEmrald
Member
Posts: 2808
From: Spring, Texas
Registered: Sep 2010


Feedback score: (3)
Leave feedback

Rate this member

Report this Post08-09-2013 07:53 PM Click Here to See the Profile for BlackEmraldClick Here to Email BlackEmraldSend a Private Message to BlackEmraldEdit/Delete MessageReply w/QuoteDirect Link to This Post
Okay, go out to your car and try this: with the car off, pump the pedal. Does the pedal get hard to the point that it is very difficult to press?
IP: Logged
bobojounson
Member
Posts: 13
From:
Registered: Mar 2011


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-09-2013 08:16 PM Click Here to See the Profile for bobojounsonSend a Private Message to bobojounsonEdit/Delete MessageReply w/QuoteDirect Link to This Post
Ya when the car is off the pedal is hard, once the car is on the pedal goes sofft
IP: Logged
theogre
Member
Posts: 30082
From: USA
Registered: Mar 99


Feedback score: N/A
Leave feedback





Total ratings: 558
Rate this member

Report this Post08-10-2013 10:57 AM Click Here to See the Profile for theogreClick Here to visit theogre's HomePageSend a Private Message to theogreEdit/Delete MessageReply w/QuoteDirect Link to This Post
Sudden Soft pedal AND no external leak = MC is bad or maybe you've boil the fluid.

MC then replace MC

If you Boiled fluid in street cars then fix what caliper is dragging and flush old fluid.
Get a cheap IR meter to quickly find a dragging caliper.

See my Cave, IR thermometer and Brake Fluid

------------------
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
(Jurassic Park)


The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)

IP: Logged
85 SE VIN 9
Member
Posts: 690
From: Harwood Heights, IL, USA
Registered: Apr 2010


Feedback score: N/A
Leave feedback

Rate this member

Report this Post08-10-2013 10:17 PM Click Here to See the Profile for 85 SE VIN 9Click Here to Email 85 SE VIN 9Send a Private Message to 85 SE VIN 9Edit/Delete MessageReply w/QuoteDirect Link to This Post
You might have a leak. Try pressing on the pedal with the engine running, but don't press it to the floor. When this happened to me I could hear it spraying. Anyway if it's leaking you will find fluid, but probably not find it missing. The hard lines rust out eventually. That's what happened to me and that would be my guess.
IP: Logged

next newest topic | next oldest topic

All times are ET (US)

Post New Topic  Post A Reply
Hop to:

Contact Us | Back To Main Page

Advertizing on PFF | Fiero Parts Vendors
PFF Merchandise | Fiero Gallery | Ogre's Cave
Real-Time Chat | Fiero Related Auctions on eBay



Copyright (c) 1999, C. Pennock