Go Back   Ford Mustang Forums > Mustang > 4.6 Mustang > 4.6L Tech

Welcome to our Mustang forums where Mustangers come together to hang out, discuss and enjoy their favorite Mustang hobby with fellow Mustang enthusiasts. We invite everyone to read, post, and enjoy our Mustang forum as well as the many other sections of our site.

You are currently viewing our forums as a guest. By joining our community you gain access to post topics, communicate with members, upload your photos and access many other special features. Registration is fast, simple and free so why wait, join our Mustang community today! If you have any problems with registration or your account login, please contact support.


Reply   Post New Thread
Unread 03-13-2011   #1 (permalink)
Mi03cobra216 is offline Apprentice


Joined: Jan 2011
Posts: 184 Threads: 24
 Mi03cobra216's Country Flag  View Mi03cobra216's 11 photos
Greenville   Michigan
Mi03cobra216 is on a distinguished road
Default 1999 Mustang GT Front brake caliper issues

So heres the deal. I drove the car home after buying it, and everything was fine. Over the winter I put new pads and drilled and slotted rotors on the car. I backed the car out of the garage today to clean and it moved out fine. I used the brakes to stop and put in park in the driveway. I get back in it to go wash the car and I thought I left the parking brake on, but I didnt. It seems to be the front. The rotors appear to have gotten hot unlike the rear which does not look like that. I am just wanting to know if this is something that can be fixed or do I more than likely need to front calipers? The pads I took off it were quite worn down. Am I able to lube the cylinder or something?
Mi03cobra216 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Unread 03-13-2011   #2 (permalink)
GTRaptor is offline SHELBY GT 350 Member

4.6L Member


Joined: Apr 2002
Posts: 5,177 Threads: 161
 GTRaptor's Country Flag  View GTRaptor's 614 photos  View GTRaptor's HomePage
Mexico
GTRaptor is on a distinguished road
Default

Sorry but your post is a bit confusing... you think the rotors got too hot, and one of the symptoms was early wear on the pads....thats correct?

You said you changed rotors and pads...did this yourself? if so did you use the right tools to compress the pistons? if not compressed properly theres a chance you can deform or crack them. This will surely could make a piston get stuck in the bore, but most surely will also create a leak.

Now...slotted rotors do wear pads faster, and they do tend to CRACK at the slots. Also, when a rotor gets too hot, it could warp.

Advice:
Remove the pads and rotors, have the rotors checked for warping and cracked spots, and if needed, do a resurface.
Don't use pure metallic pads, use more friendly semi-metallic ones, will brake better for everyday use.
Change the brake fluid, your 99 stang probably still has the old fluid in there, and a good chance it has a good amount of water.
Have the shop..or yourself, inspect the pistons and rings. Replacing the rings is a simple process, just make sure the piston gets straight into the bore.

I do love the look and added braking of slotted rotors, but using a high quality brand is a MUST. There are cheap ones that basically are stock rotors that have been drilled...those are CRAP.

Even the quality ones DO CRACK, i had brembos and willwoods and eventually both cracked at the slots, but they lasted a lot and got serious track time.
__________________
Rob Hernandez, AFM co-Founder.
GTRaptor is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-13-2011   #3 (permalink)
Mi03cobra216 is offline Apprentice


Joined: Jan 2011
Posts: 184 Threads: 24
 Mi03cobra216's Country Flag  View Mi03cobra216's 11 photos
Greenville   Michigan
Mi03cobra216 is on a distinguished road
Default

Yeah I tend to ramble on, sorry! The brakes in question are brand new. I backed out of the garage for the 1st time and it moved fine until I applied the brakes in the driveway. I think they just stuck in that position cause they seemed to drag as I drove up to the car wash.
Mi03cobra216 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-13-2011   #4 (permalink)
SoCal2V is offline SHELBY GT 350 Member

Classic Member
4.6L Member


Joined: Sep 2010
Posts: 6,133 Threads: 16
 SoCal2V's Country Flag
Hell
SoCal2V is on a distinguished road
Default

Might just need a new brake line. The inside of them can become swollen and not allow the fluid to flow back to the m/c so essentially there's always a little bit of pressure there to cause your brake to drag.
__________________

2001 GT Convertible

All the usual bolt-ons
1967 Coupe
200 I6, C4
SoCal2V is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-14-2011   #5 (permalink)
2oo5GT is offline SHELBY GT 350 Member


Joined: Nov 2007
Posts: 5,151 Threads: 12
 2oo5GT's Country Flag  View 2oo5GT's 49 photos
Pope AFB   Tennessee
2oo5GT is on a distinguished road
Default

I would take them back off and see if you can compress the piston back in again with a c clamp. The stock lines are crap and braided are better. I would also change the fluid if it hasn't been in awhile. Shouldn't look black.
__________________
-2003 Mustang Cobra
1 of 451 Oxford White #1415
-Violent Work Of Art-
-2003 Ford Lightning
1 of 723 Sonic Blue #113
--13' GT500 TVS powered--
-2005 Expedition XLT--DD
-2013 Ford Escape 1.6T
2oo5GT is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-14-2011   #6 (permalink)
Mi03cobra216 is offline Apprentice


Joined: Jan 2011
Posts: 184 Threads: 24
 Mi03cobra216's Country Flag  View Mi03cobra216's 11 photos
Greenville   Michigan
Mi03cobra216 is on a distinguished road
Default

Thanks all, for the tips! I will try it out and see what happens tonight.
Mi03cobra216 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-14-2011   #7 (permalink)
Subpath is offline Made Member

4.6L Member


Joined: Apr 2010
Posts: 631 Threads: 32
 Subpath's Country Flag
York   Pennsylvania
Subpath is on a distinguished road
Default

welcome to the mustang caliper problem. They do not like to sit, they tend to oxidize and the caliper wont retract fully. Its best to pump your brakes a few times when you start the car every cpl weeks during the off months, unless your parked in climate controlled garage.
Subpath is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-28-2011   #8 (permalink)
hypertensor25 is offline Rookie


Joined: Mar 2011
Posts: 11 Threads: 1
 hypertensor25's Country Flag
Ottawa   Ontario
hypertensor25 is on a distinguished road
Default

I have a 99 GT with the same problem. I park it over the winter months under a tarp (winter here being 6 months long with below freezing weather), without touching it until spring. Unfortunately, now my front calipers are seizing and causing the brakes to drag, making for alot of heat, noise and vibration...not to mention rediculous gas mileage.

Anyways, I am going to try replacing the front calipers this spring, as well as the pads and rotors. What do you guys think?

Also, is there a certain way to compress the pistons on the front calipers?...Last time I just used a 2x4 and two C-clamps, and they were TOUGH to move. Took my friend and I an hour each side.

Thanks!
hypertensor25 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 03-30-2011   #9 (permalink)
SoCal2V is offline SHELBY GT 350 Member

Classic Member
4.6L Member


Joined: Sep 2010
Posts: 6,133 Threads: 16
 SoCal2V's Country Flag
Hell
SoCal2V is on a distinguished road
Default

Quote:
Originally Posted by hypertensor25 View Post
I have a 99 GT with the same problem. I park it over the winter months under a tarp (winter here being 6 months long with below freezing weather), without touching it until spring. Unfortunately, now my front calipers are seizing and causing the brakes to drag, making for alot of heat, noise and vibration...not to mention rediculous gas mileage.

Anyways, I am going to try replacing the front calipers this spring, as well as the pads and rotors. What do you guys think?

Also, is there a certain way to compress the pistons on the front calipers?...Last time I just used a 2x4 and two C-clamps, and they were TOUGH to move. Took my friend and I an hour each side.

Thanks!

That's all I do as well, minus the wood. I compress them one at a time. As far as them being tough to compress, make sure the cap from the brake fluid reservoir is off. If that doesn't help, then undo the bleeder screw on the caliper. You shouldn't have to do the latter; if you find it necessary to do so then you likely have other problems such as a bad flex line or need a caliper rebuild.
__________________

2001 GT Convertible

All the usual bolt-ons
1967 Coupe
200 I6, C4
SoCal2V is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 04-02-2011   #10 (permalink)
nyuk98gt is offline PONY Member

4.6L Member
S197 Member


Joined: Sep 2008
Posts: 286 Threads: 1
 nyuk98gt's Country Flag  View nyuk98gt's 1 photo
Chesterfield   Missouri
nyuk98gt is on a distinguished road
Default

99redbeauty:

The sliders are often prone to corrosion and then they stick and don't let the caliper slide back properly. They are pretty easy to replace and they don't cost much (although it is annoying to have to replace them). Don't forget to put a little 'brake grease' on the slider pins to keep them from corroding (faster).

HTH,

Chris
__________________
2012 GT RTR 6MT; performance white / charcoal
* 3.73's, ProCal tune, MGW Gen3, FR GT500 Touring axlebacks, BMR LCAs, Steeda Panhard & brace, JLT PCV catchcan
nyuk98gt is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Unread 04-10-2011   #11 (permalink)
hypertensor25 is offline Rookie


Joined: Mar 2011
Posts: 11 Threads: 1
 hypertensor25's Country Flag
Ottawa   Ontario
hypertensor25 is on a distinguished road
Default

Thanks for the advice, SoCal2V. I figured it's time to replace those calipers....hopefully the brake lines are okay.


Peace!
hypertensor25 is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiTweet this Post!
Reply With Quote
Sponsored Links
Advertisement
 
Reply   Post New Thread



Thread Tools



Mustang Photos
Mustang Links    Top Sites    RSS    Link To Us    Add to Favorites    Archive    Terms of Use    Site Rules    Privacy    Contact    Sponsors    Advertise   
AllFordMustangs is not affiliated with or endorsed by Ford Motor Company. ©Copyright 2002-2011 All Auto Enthusiasts Network

Search Engine Friendly URLs by vBSEO 3.5.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172