OK...so I have searched the forum here as well as google and found many many answers. I hate to re-hash an old topic but I'm going to ask anyways.

I bought a 19 F150 Lariat a month or so ago with 97k on the clock. When I'm driving over roughly 30-40 mph and hit the brakes, I get a shaking, shuddering kina thing in the front. Not horrible but enough to drive you nuts. Sometimes its enough for my 10 yo son to open his mouth and make funny noises as its shaking us down. I instantly thought warped rotor, maybe bad pads etc....so I went ahead and replaced all that...shaking is still there!

When I took the calipers and all apart, everything "looked" ok at that time...nothing looked bad or out of place, but I didn't put a micrometer on it. The previous owner I was told, traveled between his property here in Texas and I think Canada maybe... there is a little corrosion under the truck but not horrible. I'm wondering if the corrosion/salt could be affecting something somewhere that I can't see or aren't aware of? Any ideas??

The back pads all look decent but I wouldn't think the back would have a lot to do with the front shaking, would it? I'm a shade tree, by no means a professional...just know enough to get me in trouble but I know it's not supposed to shake this much. Was hoping to ask here and see what kind of replies I can get for things to check!

Thanks all!

 

Sounds like your rotors may be warped. Have a shop cut them down and see if the shaking persists. Even with new rotors, the surface may still be off a little bit.

 

Did you actually replace the rotors or just "check" them? Yes, rear rotors with pad buildup can cause a lot of shake especially with these trucks and how the brakes are biased. Try bedding the brakes that should clear up most of it. Find a clear road where you can get up to 50 and brake very hard down to about 5, let off the brake, repeat until the shake is minimized. You need to get the brakes very hot so it will take a few passes.

 

I had a bout with the same thing that came on, over time.
Tuned out to be one Caliper with a frozen slid pin.
Since it went long enough, both front discs were replaced along with the Pads.
The Caliper was successfully lubed.
Has been perfect for all of 5k miles.
One caution in not to over Torque the Lug nuts because there is risk of distorting the discs the puts a wave in, that shows up as pulsing when brakes are applied.
Best you have a good brake shop do the work.

 

You might have left an imprint on the rotor. Drive down the road two footing, brake, release, brake release. a few times. Sometimes happens with hot brakes, coming to a stop, and holding the brake kinda hard for the whole stop light.

 

Throwing this out there.... have you checked your ball joints on upper and lower contol arms. Something might be loose or worn down to cause the shake under brake load.

 

Yes I replaced them. I'll try the bedding procedure and see what happens.

 

I was actually thinking something maybe with the pin....I'll have to check that. Everything else, all bolts, nuts & lug nuts were properly torqued to specs so hopefully its not that.

 

Have not but I will, thanks.

 

as violently as the described condition is- i would not think it to be rotor / caliber related, though I could very well be wrong. Sounds more like a front suspension issue