1998 Ford F150 Brakes grab at low speed

1998 FORD F-150
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CHRISVP
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Brakes grab and lock up wheels when at very low speed 5 to 10 miles per hour
Aug 6, 2010 at 9:31 AM
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MERLIN2021
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Have you removed the wheels to inspect the condition of the pads and shoes? Checked the calipers for frozen condition? Flex hoses cracked? Also checked the wheel bearings for looseness(play)?
Mar 10, 2021 at 11:58 AM
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RASMATAZ
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Inspect the disc pads for contamination-such as brake fluid/grease/oil if okay could be the brake rotors badly scored and needs resurfacing
Mar 10, 2021 at 11:58 AM
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CHRISVP
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Thanks to all who submitted. We had just completed a brake job, so it was bewildering. We finally found it to be the brake booster, the only component left to check. The internal "apply" valve was failing and allowing full vacuum at idle. Problem solved.
Until next time.
Mar 10, 2021 at 11:58 AM
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RASMATAZ
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Thanks for letting us know
Mar 10, 2021 at 11:58 AM
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