brakes are pulsating whats wrong?

Panzer · 11-09-2009, 12:05 AM

I bought the truck with new brake lines, shoes and rear cylinders and its been vibrating like crazy the day after I bought it. Today I put 15's on the back with a bigger tire and the front has 14's and stopping down a hill the ABS light flickered. It didnt come on completly. Its getting worse so I need someone to point me in the right direction

Nitemare · 11-09-2009, 01:42 AM

have you looked at the brakes at all? is the pulsation coming from the front or rear?

fatphatboy88 · 11-09-2009, 11:35 AM

warped rotor?

***What?*** · 11-09-2009, 01:55 PM

Sounds like warped rotor, time for a fresh one with new pads as well.

nukem1st · 11-09-2009, 01:59 PM

Yep, I would say a severely warped rotor(s) One way to find out,is to have them turned, you'll find out real quick if they are warped or not

***What?*** · 11-09-2009, 02:02 PM

Good time to get new bearing and seals while you are it.

CatDaddy52 · 11-09-2009, 02:02 PM

Not sure if it has 4 wheel ABS.....could be sensing the different tire sizes (front to rear).

Panzer · 11-09-2009, 04:09 PM

its the front doin it because if i let go of the wheel when i hit the brakes it moves the steering wheel alot. Ill check the rotors when I get better. I got the flu. Not the swine flu thankfully.

notfastenuff · 11-18-2009, 11:22 PM

The abs light flickering is most likely because you have different size tires front to rear. Your abs counts wheel revolutions, and if you have 2 different size tires, the count is off.

The vibration is either a wheel bearing or warped rotor. Most likely a warped rotor. Get 'em turned, throw on a new set of pads, and you should be good to go. Good luck.

-Havok- · 11-19-2009, 06:09 PM

Quote: Originally Posted by Panzer

its the front doin it because if i let go of the wheel when i hit the brakes it moves the steering wheel alot. Ill check the rotors when I get better. I got the flu. Not the swine flu thankfully.

I know this is a pointless post, but me and my gf just got over swine flu a couple weeks ago. Sucks being sick for 3-4 weeks. She was in and out of the hospital, but I toughed it out. Neither of us got the shot and I work at Wal Mart, so I'm assuming that's how we got it. Haha

And as for the brakes, I'm pretty sure it's warped rotors too cuz my friend's car was doing the same thing and that's what it ended up being.

11-09-2009, 12:05 AM	#1
Panzer 92 Iron Duke Join Date: Feb 2009 Posts: 44 Location: Mishawaka,IN User is: OffLine	brakes are pulsating whats wrong? I bought the truck with new brake lines, shoes and rear cylinders and its been vibrating like crazy the day after I bought it. Today I put 15's on the back with a bigger tire and the front has 14's and stopping down a hill the ABS light flickered. It didnt come on completly. Its getting worse so I need someone to point me in the right direction
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11-09-2009, 01:42 AM	#2
Nitemare keepin it freshhh Join Date: Sep 2008 Posts: 3,579 Location: Pawtucket, RI User is: OffLine	Re: brakes are pulsating whats wrong? have you looked at the brakes at all? is the pulsation coming from the front or rear?
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11-09-2009, 11:35 AM	#3
fatphatboy88 Registered User Age: 21 Join Date: Jun 2009 Posts: 115 Location: Raleigh/Farmville, NC User is: OffLine	Re: brakes are pulsating whats wrong? warped rotor?
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11-09-2009, 01:55 PM	#4
*What?* Moderator Join Date: Jan 2004 Posts: 17,988 Location: AZ User is: OffLine	Re: brakes are pulsating whats wrong? Sounds like warped rotor, time for a fresh one with new pads as well.
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11-09-2009, 01:59 PM	#5
nukem1st Registered User Join Date: Dec 2005 Posts: 423 Location: N W MO User is: OffLine	Re: brakes are pulsating whats wrong? Yep, I would say a severely warped rotor(s) One way to find out,is to have them turned, you'll find out real quick if they are warped or not
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11-09-2009, 02:02 PM	#6
*What?* Moderator Join Date: Jan 2004 Posts: 17,988 Location: AZ User is: OffLine	Re: brakes are pulsating whats wrong? Good time to get new bearing and seals while you are it.
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11-09-2009, 02:02 PM	#7
CatDaddy52 Registered User Join Date: Nov 2008 Posts: 1,086 Location: Rochester Hizzle, MI User is: OffLine	Re: brakes are pulsating whats wrong? Not sure if it has 4 wheel ABS.....could be sensing the different tire sizes (front to rear).
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11-09-2009, 04:09 PM	#8
Panzer 92 Iron Duke Join Date: Feb 2009 Posts: 44 Location: Mishawaka,IN User is: OffLine	Re: brakes are pulsating whats wrong? its the front doin it because if i let go of the wheel when i hit the brakes it moves the steering wheel alot. Ill check the rotors when I get better. I got the flu. Not the swine flu thankfully.
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11-18-2009, 11:22 PM	#9
notfastenuff Registered User Join Date: Feb 2009 Posts: 75 Location: Knoxville, TN User is: OffLine	Re: brakes are pulsating whats wrong? The abs light flickering is most likely because you have different size tires front to rear. Your abs counts wheel revolutions, and if you have 2 different size tires, the count is off. The vibration is either a wheel bearing or warped rotor. Most likely a warped rotor. Get 'em turned, throw on a new set of pads, and you should be good to go. Good luck.
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11-19-2009, 06:09 PM	#10
-Havok- And the new project is... Age: 21 Join Date: Mar 2007 Posts: 243 Location: Phoenix, AZ User is: OffLine	Re: brakes are pulsating whats wrong? Quote: Originally Posted by Panzer its the front doin it because if i let go of the wheel when i hit the brakes it moves the steering wheel alot. Ill check the rotors when I get better. I got the flu. Not the swine flu thankfully. I know this is a pointless post, but me and my gf just got over swine flu a couple weeks ago. Sucks being sick for 3-4 weeks. She was in and out of the hospital, but I toughed it out. Neither of us got the shot and I work at Wal Mart, so I'm assuming that's how we got it. Haha And as for the brakes, I'm pretty sure it's warped rotors too cuz my friend's car was doing the same thing and that's what it ended up being.
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