Cascade Crew

Twilightoptics · Posted: Thu May 26, 2011 11:49 am Post subject: Brake pedal pop sound/feel

Only going forward, slower speeds it's audible, otherwise I can feel it in the brake pedal. About halfway through the travel of a moderate braking event, there's a "pop" in the front end and the pedal jerks briefly. Semi intermittant as far as day to day life, but once it's doing it, it does it the whole drive.

I removed the front calipers and re-lubed the slides. It seemed to go away for about a week and now it's back. I assume it makes the noise when moving because of the rotational play allowing the caliper to move or rotate a bit, then the brake pressure has to overcome the friction to get it to slide. Am on off base here? Or does this make sense?

Had it in the air and got no play out of the susp components and the strut cap has some play, but seems firm enough in the rubber that its not hitting anything.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

When you have wheel off will it only slide back and forth or will it tilt just a bit towards rotor

Dewey316 · Posted: Thu May 26, 2011 2:22 pm Post subject:

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

It will slide with the piston pushed in.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

Let me rephrase. Move. That is why I asked about tilt

Dewey316 · Posted: Thu May 26, 2011 2:55 pm Post subject:

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

That's a good point. Also if you want to ponder about make brake problem in the thread before this one, I would appreciate it

Twilightoptics · Posted: Thu May 26, 2011 6:51 pm Post subject:

Outside audible pop when it happens, just feel on the inside. Pedal is in good shape.

There's a little bit of play on the pins so you can actually rock the caliper around the rotor (in/out) in reference to the car itself.

aaron_sK · Posted: Thu May 26, 2011 8:38 pm Post subject:

I'd throw a new set of caliper pins at it, Paul.

Had an old Suburban I was working on. One of the caliper pins was snapped clean off. Caused a single loud pop, and then hard pull under braking.

Twilightoptics · Posted: Fri May 27, 2011 10:14 am Post subject:

Here's the catch. One pin is built into the caliper carrier. The other is the removable bolt that keeps the caliper in there.

RK82 · Posted: Fri May 27, 2011 2:44 pm Post subject:

Twilightoptics · Posted: Fri May 27, 2011 3:49 pm Post subject:

IROCDave · Posted: Fri May 27, 2011 4:29 pm Post subject:

Excessive play between the caliper piston / caliper will do the same thing. The pads should show this though.

91RSVert · Posted: Fri May 27, 2011 4:47 pm Post subject:

Ive had funky noises come when the wheel bearing was bad and when you pressed on the brakes it would tilt the rotor into a different angle. Confused

Twilightoptics · Posted: Fri May 27, 2011 5:04 pm Post subject:

Wheel bearings are relatively new and have no play.

jchaussee · Member Joined: 14 Nov 2010 Posts: 1318 Location: renton

You ever get problem sorted out? That was simular prob I had with my truck, so I put a new caliper on thinking it was the problem. It wasn't, so I now am thinking it is part of steerin componants