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Old 05-30-2009, 11:11 AM   #1
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lurchy brakes

The brakes on my van was replaced roughly two months ago. New pads were installed while the front rotors were machined.

Recently, the van does a lurching motion when I press the brakes.
It does not feel as if the rotors are warped as there is no pulsation in the brake pedal. The entire van does a forward and back lurching motion. As if the brakes are grabbing and and letting go. I dont think the ABS is engaging as this happens when I'm going from 40ish-0 slowly.

My van is a 98 Mercury Villager.
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Old 05-31-2009, 11:34 PM   #2
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you won't always feel a pulsation/vibration in the brake pedal when the front rotors are warped. the rear drums could be warped too, but it's a bit harder to notice unless they're pretty bad! but my guess is that the rotors could be warped again.
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Old 06-05-2009, 05:57 PM   #3
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really...
Im leaning on more of a caliper problem as I feel that the brakes grab and let go....
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Old 06-05-2009, 11:34 PM   #4
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Sounds like blown front struts.
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Old 06-06-2009, 07:58 AM   #5
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really...
Im leaning on more of a caliper problem as I feel that the brakes grab and let go....
I thought you were a apprentice of auto-mechanics and you worked @ Canadian tire or something? If that is true, the questions you are asking are trivial and interesting.
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Old 06-06-2009, 09:10 AM   #6
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my aunts 93 camry does the same thing. dont know what the reason is tho, she took it in to get it checked and the mechanic said it was fine. O.o
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Old 06-06-2009, 09:37 AM   #7
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hmmm
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Old 06-07-2009, 01:02 AM   #8
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I thought you were a apprentice of auto-mechanics and you worked @ Canadian tire or something? If that is true, the questions you are asking are trivial and interesting.
no longer the case.
career changed.
I enjoyed fixing/modifying cars as a hobby. but my stint at CT showed me that the auto industry is not for me as a career.
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Old 06-10-2009, 08:23 PM   #9
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^ what do you do now? fun time at ct lol

you can always join the aircraft industy like me!
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Old 06-11-2009, 05:07 PM   #10
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telecommunications now

big change, but i like it


any one have any ideas on the problem.
it is getting more noticeable....
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Old 06-13-2009, 09:43 PM   #11
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I don't think anyone will be able to diagnose your problem. Use what you know, take off the wheel and maybe calipers and inspect for yourself. Could be *possibly* sticky caliper, sticky slider pins, sticky slider bolts. Could be anything, really.
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4 years ago, I pulled up to burger king, and asked to get a teen burger. I realized after the 3rd time i said it, I was in the wrong fucking place.

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Old 06-14-2009, 12:19 AM   #12
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the caliper wouldn't grab, then let go, then grab, then let go if you're applying steady pressure to the brake pedal. it sounds like the rotors are really bad, maybe they were machined too thin and they're warped again
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Old 06-14-2009, 12:40 AM   #13
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^True enough, and it often occurs with a "clunk" or a sudden "thunk" in the pedal.

However, wtf does "lurchy" really mean anyways..?
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Invisible sky daddies commanding people to do shit is just so beyond retarded, I feel like punching myself in the balls until I shit my computer chair.
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4 years ago, I pulled up to burger king, and asked to get a teen burger. I realized after the 3rd time i said it, I was in the wrong fucking place.

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Old 06-15-2009, 06:47 PM   #14
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^ I was also scratching my head about "lurchy" My definition of lurch, was "to lurch forward"
But if this is badly warped rotors, lift up the front end (assuming it's front WD) take off the wheels and put in drive and watch if the calipers and/or rotors move side to side. If it's really bad you will easily see movement. Or a lurchy motion
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Old 06-16-2009, 09:52 AM   #15
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spent sometime yesterday and took apart brakes...
nothing was really noticeable until i brought the rotors to get machined..

turns out the fucker who my parents trusted for the brake jobs fucked up royally.
the rotors were way too thin.

ended up get new rotors and brake pads and the pads were worn unevenly...



When I said "lurchy," I meant the car would brake normally, then the car would "lurch" forward; as I let go of the pedal.
The resulting sensation is as if I press the brake pedal, then let go, then press again, then let go.....
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Old 06-16-2009, 06:19 PM   #16
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i knew it! good thing its fixed, warped rotors are annoying, especially when going down hill
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