Brake question
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Tuned
Joined: Jan 2011
Posts: 365
Likes: 1
From: Massanutten,VA
Brake question
I just installed new rotors, pads and calipers on my 03, 6.8, X limited. After about 2 weeks of driving I still have a slight pull to the left, it's not at first when the brake are applied, but rather right before the X stops, 5 mph and below. When I was bleeding the system I noticed that the passanger side front caliper had to have the bleeder tightened down to the point you thought it would snap off or else it would have fluid slowly rise up through the bleeder hole. I took the caliper off, put a piece of wood in the caliper to hold the piston down, used very large channel locks, and had my son push down on the brake pedal. The pistons come out but they don't seem like they have a lot of pressure behind them, going back to look around more, but I know that I have never had to tighten down a bleeder that hard to stop the brake fluid. I was ready for it to snap or strip. Anyone had an issue like this? Thanks
Freshman User
Joined: Nov 2008
Posts: 27
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From: Dekalb, IL
Did you ever solve your problem? This is the exact issue I am having. The brakes work fine when initially pressed, but once the Ex gets down to less than 5mph the petal goes soft, starts to sink, and the truck starts to pull to the right.
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Tuned
Joined: Jan 2011
Posts: 365
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From: Massanutten,VA
No the problem seemed to correct it self somewhat, it will on occasion pull slightly to the left right before you come to a complete stop. I know that my X orginially belonged to a contractor, before I bought it, and when the housing market fell out in 2008 I believe that the X was garaged for a couple of years. When I first messed with the brakes I drained all the brake fluid and it was really dark green brown. I am wondering if it sitting like that could have gunked up a brake line or two
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Tuned
Joined: Jan 2011
Posts: 365
Likes: 1
From: Massanutten,VA
In what way is the track bar related to the brake pull did he tell the reason
Laughing Gas
Joined: Jul 2010
Posts: 1,174
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From: Flat Rock, MI
He said said and I never asked. Perhaps it's related to the compliance in the system. Had I thought at the time I'd own one of these, I would have asked. I'll check and see how mine reacts later today.
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Freshman User
Joined: Nov 2008
Posts: 27
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From: Dekalb, IL
After years of dealing with the intermittent problem of the truck pulling to the right on slow speed stops (<5mph), I have finally figured it out I think. I found the left front ABS sensor was reading, but its housing was cracked. It always felt like the ABS was kicking on on one wheel, but I couldn't figure it out before and it wasn't throwing any codes. I've had several mechanics check this out without luck and then today while just looking things over during some brake work I found it.
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Posting Guru
Joined: May 2012
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From: Colorado
Interesting.
I am guessing you already serviced the slide pins ?
I had some minor pulling to one side. One of the slide pins was barely moving. Cleaned/lubed it and pull is gone.
Serviced the other wheels yesterday but they were all freely moving.
I am guessing you already serviced the slide pins ?
I had some minor pulling to one side. One of the slide pins was barely moving. Cleaned/lubed it and pull is gone.
Serviced the other wheels yesterday but they were all freely moving.
Mountain Pass
Joined: Apr 2014
Posts: 174
Likes: 0
From: Tampa Bay Area
Permatex 24125 is a high temp assembly lube that prevents slide pins seizing. There are some other products that are similar. You can read the reviews on Amazon. Of course I didn't know about it until after I rebuilt the calipers on my X. I used a high temp synthetic grease. Hopefully my slide pins won't seize again. I did get to use it on the slide pins of my Taurus calipers though 
.
Nelson
.Nelson
Post Fiend
Joined: Mar 2009
Posts: 11,798
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From: Mt. Shasta California
I did all 8 of mine with some high temp grease and now my slight pull went from slight to very slight, I don't think it will ever go away, it probably has something to do with the alignment, caliper difference, pressure difference, rotors, etc. It doesn't matter what I do with the tires, it's always "just there".
Freshman User
Joined: Nov 2008
Posts: 27
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From: Dekalb, IL
Yes, the caliper slider pins is one of the many things I had changed/cleaned/lubed over the last two years that had no affect.
After the problem started but before I figured it out these are the things that I changed or had to change:
I flushed the whole system with new fluid.
I had to change out the master cylinder due to slight weapage found while bleading the brakes.
Put new front pads and rotors on due to caliper sticking along with one caliper.
I had debris kick up on the highway and cut the brake line going to the rear so I had to replace some of the line and bleed the system again.
Had to put new rear pads and rotors on not long after the brake line break due to a caliper freezing up and trashing the one side.
All along this time I was unable to pull a code for anything brake or ABS related.
Finally this weekend I found that cracked sensor! Now I feel like I should just finish the whole system off and replace the rest of the rubber hoses and old Northern winter blasted steal lines.
After the problem started but before I figured it out these are the things that I changed or had to change:
I flushed the whole system with new fluid.
I had to change out the master cylinder due to slight weapage found while bleading the brakes.
Put new front pads and rotors on due to caliper sticking along with one caliper.
I had debris kick up on the highway and cut the brake line going to the rear so I had to replace some of the line and bleed the system again.
Had to put new rear pads and rotors on not long after the brake line break due to a caliper freezing up and trashing the one side.
All along this time I was unable to pull a code for anything brake or ABS related.
Finally this weekend I found that cracked sensor! Now I feel like I should just finish the whole system off and replace the rest of the rubber hoses and old Northern winter blasted steal lines.
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