99 F-150 Lift/ ABS Light??

davey300 · 09-17-2009, 01:21 PM

Hello, I just got a 99 f-150 it has a 6in lift and 35in tires, my question is my abs light is on and the guy i bought it from said a sensor was bad, or do i have to buy a box that reprograms my computer? It has a 4.2 v-6 5 speed 2wd . Thanks Dave

Case 7230 · 09-17-2009, 01:29 PM

Do you have full ABS or just the RearABS?

davey300 · 09-17-2009, 01:51 PM

Full ABS. I seen on skyjackers website something about a little box that i have to wire up to the computer or something to recalibrate the ABS. tHANKS ALOT DAVE

Case 7230 · 09-18-2009, 03:09 AM

Could be a bad wheel sensor. Often these can get messed up if a wheel bearing has been worked on.
A scanner that can read ABS faults should pinpoint the problem.

davey300 · 09-18-2009, 03:30 AM

It did have a wheel bearing very loose on the front! but with the big tire would it mess up the abs anyways? thanks for the help!!! dave

Case 7230 · 09-18-2009, 05:56 AM

There is a tone ring in the hub and then an external sensor which senses if the tone ring is turning or not and sends the info back to the computer through the connecting wires.
You can visually check the sensor and its wiring at the wheel hub. However if the bearing was bad I would think that the tone ring is damaged in the hub.
Just my opinion. Some of the others may have a better idea.

tjzz4 · 09-20-2009, 09:38 AM

the most comon failure is the rear sensor located on top of the differential. Pull codes to start.

09-17-2009, 01:21 PM	#1
davey300 Full Member Join Date: Mar 2009 Posts: 15	99 F-150 Lift/ ABS Light?? Hello, I just got a 99 f-150 it has a 6in lift and 35in tires, my question is my abs light is on and the guy i bought it from said a sensor was bad, or do i have to buy a box that reprograms my computer? It has a 4.2 v-6 5 speed 2wd . Thanks Dave

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09-17-2009, 01:29 PM	#2
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	Do you have full ABS or just the RearABS?

09-17-2009, 01:51 PM	#3
davey300 Full Member Join Date: Mar 2009 Posts: 15	Full ABS. I seen on skyjackers website something about a little box that i have to wire up to the computer or something to recalibrate the ABS. tHANKS ALOT DAVE

09-18-2009, 03:09 AM	#4
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	Could be a bad wheel sensor. Often these can get messed up if a wheel bearing has been worked on. A scanner that can read ABS faults should pinpoint the problem.

09-18-2009, 03:30 AM	#5
davey300 Full Member Join Date: Mar 2009 Posts: 15	It did have a wheel bearing very loose on the front! but with the big tire would it mess up the abs anyways? thanks for the help!!! dave

09-18-2009, 05:56 AM	#6
Case 7230 Senior Member Join Date: Dec 2007 Posts: 547	There is a tone ring in the hub and then an external sensor which senses if the tone ring is turning or not and sends the info back to the computer through the connecting wires. You can visually check the sensor and its wiring at the wheel hub. However if the bearing was bad I would think that the tone ring is damaged in the hub. Just my opinion. Some of the others may have a better idea.

09-20-2009, 09:38 AM	#7
tjzz4 Senior Member Join Date: Oct 2007 Posts: 277	the most comon failure is the rear sensor located on top of the differential. Pull codes to start.