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Unusual Braking Issue(s)???

  • Thread starter Thread starter 91StangGT5.0
  • Start date Start date Jan 30, 2010

91StangGT5.0

Member
Oct 21, 2009
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Jan 30, 2010
#1
  • Jan 30, 2010
  • #1
Ok this has been going on since I spent $1596 on getting my braking system redone back in October So I've been trying to figure out why there is a problem since then......My brakes pretty much lock pretty easily. I can roll pretty darn slow and slam my brakes my car rolls about 5-8ft before stopping...usually a car stops and would jerk you forward. Well not my car. If I'm driving normally and have to get on my brakes pretty good (not nearly as much as it would take to lock up the brakes in any other car) my car's brakes will most of the time sort of lock up. This makes it a pain to drive in San Antonio in the rain during rush hour! I've taken it back to the brake shop immediately after finding it out just from leaving the place! All they told me is that it may be my Master Cylinder or more than likely my cam is eating up too much vaccuum! I have a Trick Flow Stage 1 cam! It shouldn't be eating enough to screw with my brakes. I'm at a loss to figure out why my brakes aren't functioning normally.

This is all I got done at the shop....

New Rotors and Performance Brake Pads
New Front Brake Hardware
New Wheel Bearing all around
Brand New Rear Drum Brakes (Everything got replaced!)
New Shocks/Struts all around

I didn't get new calipers though.
 

Tanus

New Member
Dec 11, 2009
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Jan 31, 2010
#2
  • Jan 31, 2010
  • #2
Im confused, are you saying they work too good, causing them to lock and slide or not good enough?
 

91StangGT5.0

Member
Oct 21, 2009
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Jan 31, 2010
#3
  • Jan 31, 2010
  • #3
Tanus said:
Im confused, are you saying they work too good, causing them to lock and slide or not good enough?
Click to expand...

It confuses me too. It's hard to explain. It's better to try it yourself rather than try to explain the problem. But yea, the brakes are not good enough by far. They lock up way too easy (if i'm going 10 mph the front will lock if pushed hard) and the stopping distance sucks.
 

Tanus

New Member
Dec 11, 2009
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#4
  • Jan 31, 2010
  • #4
you just confused me again haha, do the rears lock or fronts or both?
 

91StangGT5.0

Member
Oct 21, 2009
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Jan 31, 2010
#5
  • Jan 31, 2010
  • #5
just the front
 

91StangGT5.0

Member
Oct 21, 2009
162
0
17
Jan 31, 2010
#6
  • Jan 31, 2010
  • #6
Oh and I have a 5 lug conversion if that effects anything.
 

giddyup306

Founding Member
Oct 22, 2002
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Jan 31, 2010
#7
  • Jan 31, 2010
  • #7
If it didn't do it before you took it to the shop it is probably something they did or didn't do right. I'd make them fix it for FREE. If they don't get in contact with the BBB. If you were going with different calipers or master cylinder/brake booster I might say differently but this isn't the case. Also why did you wait 3 months?
 
D

DonMaximo

Member
Sep 25, 2003
217
5
19
Lewisville, Texas
Jan 31, 2010
#8
  • Jan 31, 2010
  • #8
Unless you changed the cam AFTER the brake work, then the mechanic cannot use brake vacuum as an explanation.

Presuming that the only thing changed was the brakes...and the BEFORE and AFTER behavior are not consistent, we must reasonably assume that the actual brake job itself it the source of the problem.

I have no idea what the problem is....but consider the following items cosiderations for review:

- Is brake fluid leaking at the caliper or where the brake line meets the caliper ?

- Is there grease on the pads or rotors from the installation ?

- Were the lines and calipers properly bled ?
Trapped water can convert into a gas if/when brake fluid heats up
Trapped air will typically cause a soft pedal/weak braking
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,218
17,902
224
Massachusetts
Jan 31, 2010
#9
  • Jan 31, 2010
  • #9
Is this a stock brake setup? In other words did you change any components out to non-stock parts?

And if it is stock, then holy damn $1500 on stock brakes?


As for the front brakes locking easily, do both lock, or just the driver's side front left wheel?
 

Tanus

New Member
Dec 11, 2009
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#10
  • Jan 31, 2010
  • #10
probably a proportioning problem, when you hit the brakes the rears initiate first then the front brakes, if the front come on first they lock easy cause there wasnt time for the weight to transfer to the front
 

Mustang5L5

That is…until I whipped out my Bissell
Mod Dude
Feb 18, 2001
43,218
17,902
224
Massachusetts
Jan 31, 2010
#11
  • Jan 31, 2010
  • #11
That's what i am thinking too which is why i asked if any component in the system is non-stock and was changed at some point.
 

91StangGT5.0

Member
Oct 21, 2009
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Jan 31, 2010
#12
  • Jan 31, 2010
  • #12
Everything I listed are not stock, but also the $1596 was with labor too. The cam was already installed when I took the car in. Its not a total hazard for me right now. I can stop pretty easily it's just that I have to be careful and not surprise the brakes too fast.
 
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