F-250 Brake Issue

[SETenn]

I have a 2011 F-250 four wheel drive. A while back I noticed that once in a while there was some resistance after putting it in drive, sort of like a caliper that didn’t want to release. A little push on the gas pedal releases the tension and everything seems fine. Sometimes it does this, other times it does not. I suspected a sticking caliper and had both on the front replaced since it for sure seemed like the issue was coming from the front. I also had both brake lines replaced on the front. Everything was good for about a day and then it did it again. There is not hot brake smell of any kind and it stops straight. My mechanic is stumped as well. The only other thing to do is to replace both back calipers. Anyone else ever experience this issue? It is a 6.2 gasser.

[315RLTSinPA]

Could be hill start assist. Does it do it on level ground or only on hills? Shouldn't do it on level ground.

[danrclem]

Lynnmor wrote:
The back side of the brake pads rust like crazy, especially if you drove on salted roads, just one thing to check.

That would be my first guess. If it's been raining there like it has been in my area there is plenty of moisture to do that.

[Lynnmor]

The back side of the brake pads rust like crazy, especially if you drove on salted roads, just one thing to check.

[SETenn]

Yes it is a 4x4

[bid_time]

Is it a 4 x 4?

[amxpress]

Instead of replacing the calipers, why not inspect the slide pins for corrosion? You can clean & lubricate them to correct a sticky caliper condition. They should easily slide in and out of their bore.

[SETenn]

Thanks for the replies. There is definitely something holding it back from time to time, hit the gas pedal a little and whatever it is will release. I'm just concerned that if it is a caliper that it will eventually not release.

[SETenn]

I honestly don’t know about the hill assist. How could I tell if I have it? I have only had the truck about 3 months.

[ScottG]

A year or two after launching a buddy's boat in salt water, I had the same issue. In my case it was the back calipers hanging up.
I also had a rebuilt caliper (front this time) start sticking after less than a year.

[bguy]

Does it have hill assist?

[SETenn]

62k miles.

[donn0128]

Miles? Flush the brakes completely. It is possible youe ebrake cable is sticking.