302w 83 Posted June 24, 2015 Has anyone ever heard of a car/truck pulling to one direction while at highway speeds only? It seemed like my trusty F150 was nosediving a bit and pulling right while lightly braking on 80. Limped it home, and I was flooring the brake doing 40 to test it and nothing seemed amiss then. Very strange. The truck had new pads/rotors and drums/shoes put in maybe 20k ago. The calipers have the old style pins that you drive out with a punch. The truck turns 22 this week, so I'm not grumpy about it. I will go over my brakes this weekend, but I find it odd it stopped fine off highway.. Quote Share this post Link to post Share on other sites
Tack Tickle 0 Posted June 24, 2015 It sounds like it might be a wheel alignment issue. It usually is most noticeable while braking. Quote Share this post Link to post Share on other sites
ECsandstar 28 Posted June 24, 2015 sounds like maybe a caliper grabbing. Quote Share this post Link to post Share on other sites
Kevin125 4,772 Posted June 24, 2015 Check the pads and the rotors. If they all look ok, check the alignment and your ball joints. And I'd check the wheel bearings for slop and noise. Look at both sides. Most likely brakes or alignment issue. Quote Share this post Link to post Share on other sites
Malsua 1,422 Posted June 24, 2015 I'm guessing that one caliper pin, opposite side of the direction of pull, is frozen. On light braking, only half the pad on the bad caliper will solidly engage and the vehicle will pull towards the wheel with full braking. On a hard brake, both pads on both calipers will engage and it will stop evenly. Quote Share this post Link to post Share on other sites
Mr.Stu 1,927 Posted June 24, 2015 On an Jeep I used to have this would happen sometimes and it was a stuck piston in one front caliper causing the brake to jam on. Until it got hot it would brake in a straight line but after the heat had built up from driving at speed that side suffered huge brake fade so the Jeep pulled to the opposite side under breaking. Quote Share this post Link to post Share on other sites
1LtCAP 4,264 Posted June 24, 2015 Has anyone ever heard of a car/truck pulling to one direction while at highway speeds only? It seemed like my trusty F150 was nosediving a bit and pulling right while lightly braking on 80. Limped it home, and I was flooring the brake doing 40 to test it and nothing seemed amiss then. Very strange. The truck had new pads/rotors and drums/shoes put in maybe 20k ago. The calipers have the old style pins that you drive out with a punch. The truck turns 22 this week, so I'm not grumpy about it. I will go over my brakes this weekend, but I find it odd it stopped fine off highway.. couple possibilities. nose diving usually tells that something's wrong in the front. you could have either a seized caliper on the opposite side of the pull(causing the other one to do most of the work), or a blocked brake hose. but i got a question for ya. when it pulls, what does the steering wheel do? does it move in direction of pull? or does it stay the same? or does it move opposite the pull? Quote Share this post Link to post Share on other sites
302w 83 Posted June 24, 2015 I'm not quite sure to be honest. I limped it home and avoided braking on the highway, and it didn't pull off highway. Quote Share this post Link to post Share on other sites
NickySantoro 211 Posted June 24, 2015 Check your brake fluid level. You may have a leaking caliper. Fluid on the pads will cause a grab. Quote Share this post Link to post Share on other sites
SuRrEaLNJ 294 Posted June 25, 2015 What year F150? If it's a TTB year alignment issues could cause the diving. I'm going to suspect sticking pins or piston on the caliper from the pull but the dive makes me think there may be more to the issue. Quote Share this post Link to post Share on other sites