97 front brake chatter when cold
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7th Gear
Joined: Jan 2013
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97 front brake chatter when cold
Hey everyone ~
I could use some advice on my 97 F150 4.6 4x2. I have a semi-rough front end "chatter" when the brakes are first applied after vehicle has been sitting overnight. It feels like it comes from the front disk brakes, I assumed it was a warped rotor or loose wheel bearing so I replaced the front rotors (old were to thin to turn), new wheel bearings and pads. Still had the issue, so I then assumed it was a bad caliper... replaced both those, and all related hardware. Still have the issue!
I can not reproduce the event until the vehicle is in the cold state and it will only do it once or twice, so I am finding it difficult to diagnose. Any suggestions?
Tired of blindly attacking this issue by changing what I thought was obvious.
F150, 130K miles, 4.6l, automatic, 4x2, rear drums, front disk
I could use some advice on my 97 F150 4.6 4x2. I have a semi-rough front end "chatter" when the brakes are first applied after vehicle has been sitting overnight. It feels like it comes from the front disk brakes, I assumed it was a warped rotor or loose wheel bearing so I replaced the front rotors (old were to thin to turn), new wheel bearings and pads. Still had the issue, so I then assumed it was a bad caliper... replaced both those, and all related hardware. Still have the issue!
I can not reproduce the event until the vehicle is in the cold state and it will only do it once or twice, so I am finding it difficult to diagnose. Any suggestions?
Tired of blindly attacking this issue by changing what I thought was obvious. F150, 130K miles, 4.6l, automatic, 4x2, rear drums, front disk
Lead Driver
Joined: Sep 2006
Posts: 7,907
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Give some idea of how tight you make the lug nuts on the front discs.
Could you be over tightening them and distorting the discs?
Front wheel balance, loose steering box, linkage or ball joints?
Tires take a cold set until they begin to heat?
Could you be over tightening them and distorting the discs?
Front wheel balance, loose steering box, linkage or ball joints?
Tires take a cold set until they begin to heat?
Thread Starter
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7th Gear
Joined: Jan 2013
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Bluegrass 7 ~
thanks for the tips... I did use a torque wrench for the lugs @ 125ftlb. I will rotate the tires and see if I have any difference. I wil also inspect the other steering linkages as well. Hope to find something and put this behind me. thanks again.
thanks for the tips... I did use a torque wrench for the lugs @ 125ftlb. I will rotate the tires and see if I have any difference. I wil also inspect the other steering linkages as well. Hope to find something and put this behind me. thanks again.
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