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Al Giazirra
Guest
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 Posted: Thu Nov 08, 2007 10:03 pm Post subject: Pulsing Brakes |
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Hope this is the correct forum to ask a question, if not please direct
me to where I can go for a bit of help.
2004 Ford E150, 65,000 mi. former professional wrench twister, now
only for necessity ;-) .
Been experiencing a pulse in braking, not so much if any feeling in
the pedal but certainly the shudder. Getting real annoying and I
attributed it to the front rotors being out of round. So off to work
I went and had the rotors cut, changed all bearings and races along
with the pads (NAPA ceramic with all the lubes) and rotated the tires.
No joy! Right from the first test down the street, I could feel it
doing the same thing. Increases in intensity with speed but not to
the same extent as before the brake job. Any thoughts or suggestions?
I'm thinking of checking the rear brakes for warping and maybe the
tires for a separation. As I said, no feeling in the pedal, but
certainly in the ride.
Thanks much
Al |
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AZ Nomad
Guest
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| Posted: Thu Nov 08, 2007 11:47 pm Post subject: Re: Pulsing Brakes |
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On Thu, 08 Nov 2007 16:47:34 -0600, jim <"sjedgingN0sp"@m> wrote:
| Quote: | Al Giazirra wrote:
Hope this is the correct forum to ask a question, if not please direct
me to where I can go for a bit of help.
2004 Ford E150, 65,000 mi. former professional wrench twister, now
only for necessity ;-) .
Been experiencing a pulse in braking, not so much if any feeling in
the pedal but certainly the shudder. Getting real annoying and I
attributed it to the front rotors being out of round. So off to work
I went and had the rotors cut, changed all bearings and races along
with the pads (NAPA ceramic with all the lubes) and rotated the tires.
No joy! Right from the first test down the street, I could feel it
doing the same thing. Increases in intensity with speed but not to
the same extent as before the brake job. Any thoughts or suggestions?
I'm thinking of checking the rear brakes for warping and maybe the
tires for a separation. As I said, no feeling in the pedal, but
certainly in the ride.
If you feel it it in the steering and not the brake pedal, I would guess
tie rod end(s) as the most likely suspect. The possibility of sticking
calipers should also be looked at.
At highway speeds does it show up with light braking or only when you try
to stop fast?
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Couldn't a defective tire cause a twist on the steering as braking force
is applied? As the bad spot rotates into contact with the street, the
lateral force will be applied and then vanish when the bad spot rotates
out of the way. |
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Steve W.
Guest
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| Posted: Thu Nov 08, 2007 11:47 pm Post subject: Re: Pulsing Brakes |
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jim wrote:
| Quote: |
Al Giazirra wrote:
Hope this is the correct forum to ask a question, if not please direct
me to where I can go for a bit of help.
2004 Ford E150, 65,000 mi. former professional wrench twister, now
only for necessity ;-) .
Been experiencing a pulse in braking, not so much if any feeling in
the pedal but certainly the shudder. Getting real annoying and I
attributed it to the front rotors being out of round. So off to work
I went and had the rotors cut, changed all bearings and races along
with the pads (NAPA ceramic with all the lubes) and rotated the tires.
No joy! Right from the first test down the street, I could feel it
doing the same thing. Increases in intensity with speed but not to
the same extent as before the brake job. Any thoughts or suggestions?
I'm thinking of checking the rear brakes for warping and maybe the
tires for a separation. As I said, no feeling in the pedal, but
certainly in the ride.
If you feel it it in the steering and not the brake pedal, I would guess
tie rod end(s) as the most likely suspect. The possibility of sticking
calipers should also be looked at.
At highway speeds does it show up with light braking or only when you try
to stop fast?
-jim
-jim
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Rusty or rough rear brakes. Could also be a leaking seal or wheel cylinder.
Generally if you can feel it in the ride and in the seat it is rear
brakes or tires.
If you feel it in the wheel as well then look at the fronts. Some
vehicles are REALLY bad for this. The 2500 Dodge my FIL has will develop
a shudder if it is parked outside overnight and not driven the next day.
The slight rust in the drums gets grabby.
--
Steve W.
Near Cooperstown, New York |
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