speedytypes

So basically ive had this happen to me for about a year now. Whenever i slam on the brakes really fast the car feels like it turns to the right about 5 degrees and dips and then it straightens out again. The feeling is quite scary and makes me feel not so confident when driving spiritedly. Here is what ive done so far to try and diagnose the problem. Ive had my mechanic align the car, check all the bushings and joints for play, and he bleed my brakes. Also ive recently installed Eibach lowering springs and brand new OEM shock absorbers. Also Ive replaced all my rotors and pads with OEM parts. My next step is to change the flex lines for the brakes. My theory is that its cheap and incase there is a clog or excesive ballooning it will take care of that. If anyone has any thoughts or experience with this i would really appreciate any input. Also do the Brembo calipers require any special service?

Turbonut

iTrader: (1)

If it only pulles when the brakes are applied hard, it's fairly obvious the problem lies within the hydraulic brake system and couldn't possibly be any other component. Chances are one of the lines is expanding when brakes are applied hard and one caliper is low on pressure compared to the other side. Haven't heard of many Brembo problems, but with a 4 piston caliper many will find that the lower pistons tend to bind, especially if fluid maintenance isn't performed, as condensation settles at the bottom of the caliper.

Easiest and least expensive solution is to first change the hoses and see if it is corrected, but if not, looks like the calipers are next. The calipers are easy to rebuild, but time consuming, and the kit for both are @ $20aftermarket and maybe $45 from Acura.

speedytypes

thanks for the reply. Its basically what i thought, ill do that and hopefully this issue will be resolved

paperboy42190

iTrader: (7)

Was it fixed?

BOMDIGY

My 2010 TL SH just started doing this yesterday at 55k miles. Did you by chance get yours fixed?

I hate cars

With it dipping down and pulling to one side I was going to say a bad shock but it looks like that's been done already. If it hasn't been fixed yet I would start shooting brake temps to see if one is running a lot hotter than the others so you know where to look.

YeuEmMaiMai

Also check for calipers that are not sliding freely

SirAwesometron

Lots of roads are slanted to help reduce puddles. Especially country roads

paperboy42190

iTrader: (7)

mine still does this. its definitely not the curvature of the road. none of my caliper pistons are stuck because I had my calipers off my car and replaced the dust boots, they were all sliding freely.
and i have brembos so its a fixed caliper, no sliding guide pins. I bled my brakes properly(it did this before the bleeding too). I suspect it may be my alignment, but we'll see soon

YeuEmMaiMai

time to bleed your brakes one at a time until new fluid comes out of each caliper

BOMDIGY

I'm gonna flush the brake lines and put some new fluid to see if that helps. I will let you know if that works

YeuEmMaiMai

If you are by yourself do this, even if you are not still use the stuff mentioned.

Get a rubber hose and an empty 20 oz soda (aka pop for those of you that call soda pop ) )bottle. and 2 BIG bottles of brake fluid

1. put hose in bottle so that there is a flat loop on the bottom
2. add enough brake fluid to complete cover loop plus about 2 or 3 mm
3. open bake reservoir and top off fluid
4. attach hose to caliper bleed valve and open it
5. get in car and pump brakes a few times, check reservoir fluid every few pumps and add as needed. repeat until fluid comes out of caliper clear. Close bleeder valve and remove hose. Empty bottle as needed into a brake fluid proof container.
DO NOT LET FLUID GET BELOW THE PASTIC TANK!.
6. go to opposite corner wheel and repeat steps 4 and 5 (example front left to right rear)
7. Come back to the opposite front side and repeat steps 4-6.

Total time if you are slow like me 1 hour.

I hate cars

If you don't have one, get an IR temp gun. They can be bought as cheap as $20. Shoot your front rotor temps after a drive. They should be almost identical. This will rule out or prove a brake issue.

NorCoTL

If you are diving to the right under hard braking, the problem will usually be with the brakes on the left side. As in less braking happening on the left side than the right side.

paperboy42190

iTrader: (7)

i had tried to check my temps after driving to see if there was a braking issue. it was a very general test cuz all I did was feel the rim spoke after driving. its probably very inaccurate but it should at least give me a ball park. both sides felt the same to me.

anyways, I got an alignment couple days ago...so far no more pulling during braking

Hotwired05

I had the exact same problem on my Type-S. When I slam on the brakes the car dipped and almost felt like it wanted to rotate to the right. Took it to my mechanic. He said my outer tie rod end needed to be replaced, my alignment was bad, the specifically the toe angle. He said that because of bad alignment and my failing outer tie rods, what was happening is during hard braking my right wheel would excessively toe out, which would cause the pulling. Also my right caliper needed to be replaced. (I felt skeptical since I thought if it pulls right, must be something with the left side) but apparently it was not moving freely and needed to be rebuilt/replaced. In any event, when I got my car back, all was well.