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99 F550 7.3

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Old 12-18-2012, 07:02 AM
Engalwood Engalwood is offline
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99 F550 7.3

I have a ? on the abs light. Im in the process of changing out that Ball Joints . I figured while I was at it I would fix the ABS light that been on for some time. How do I figure out which sensor is bad? I know I dont want to replace them all bc they are between $170(Motorcraft)-$70(Cheap one).

I am just wondering if there is a way I can track this down and figure it out
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Old 12-18-2012, 08:06 AM
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not to be the bearer off bad news, but mine did this and it was my hubs going bad.
i have seen where you can jack up the tire and spine it will having a meter plugged in to the abs sensor/
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Old 12-18-2012, 08:17 AM
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But the good news is,you can get Timken brand hubs from Autozone for about $160...and I believe they come with new ABS sensors..
Edit..not sure if the f550s are the same though..
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Old 12-18-2012, 08:44 AM
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Here are some ohm and voltage tests you can run.

Front ABS Sensor Ohm reading across the Sensor End connection

4x2 F250/350: 2,000-4,000 ohms

4x2 F450/550: 650-800 ohms

4x4 F250/550: 650-800 ohms

Rear ABS Sensor (VSS) Ohm Readings

All: 800-3,500 ohms

A volt meter, set to the low scale AC volts, should show a fluctuating reading while the differential, or front hub, sensor ring is turned at a quick rate.
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