I have a 2000 with the v10 4x4 with 130,000 miles problem started one day when putting on brakes the peddle felt like it pulsated a little like the abs had activated, then a couple of minutes later the light came on. Did not do again and the light went off, started doing it on and off every so often same thing. Took to private machenic he checked all the brakes and found the pins froze up on one in the back and one in the front. Took home did it again, took back he ran codes and found the vss coded changed it did it again before I got home.
Took back drove mechenic around with scanner hooked up did it again and showed code for vss. Got on here did search and could not find anything that really matched what I have happening. Seen several threads about the cops causing this but when it happens to me I dont lose my speedo or gauges only the abs light comes on and then after a while goes off. Now the light is coming on sometimes with out hitting the brakes. The only other thing the mechenic said when we drove around was that the front wheel sensors one was reading a couple of mph faster than the other one untill you hit 20mph than they both read the same. going back to shop Wednesday but we dont have a clue where to go next, any suggestions would be greatly appriecated.

 

I have heard of this happening due to oversized tires on cars. Did you by any chance recently install oversized tires?

 

no stock tires and rims.

 

Do a search on USER I.D. Monsta and ask him, he pretty well knows these things and is very happy to help someone.

 

Thanks will try to do that tomorrow.

 

The little ABS sensor wire came unplugged on my truck once, ya know, down by the brake lines and stuff.

 

we rechecked the plug it was fine, thanks for the suggustion.

 

Would Monsta or some of you other guys thats had this problem please give me some more things to look at or check this is not a big problem yet but I would like to find a answer before my wife kills me this being her ride she is tired of it being in the shop. Thanks

 

Here is what shop said they scanned and the code for the vss came up again they cleared hooked scanner to it and drove and same code came back, they put another vss on it and it did the same thing. The only thing they can see on the scanner is the left front sensor goes up and down about 3 mph faster than the other 2 they are thinking that maybe whats causing the problem. They checked the wheel bearings and everything seems good and tight. Do I take the chance and change the bearing assembly or is there some other test I can run to rule the left front sensor out? Help please.

 

New mechanic found problem with ABS light a shorted wire in the harness behind the power steering pump resevior. the one running in the drivers side fender to the ABS unit. Hope this helps others.

 

Thanks for the update, may help someone in the future. At least one thing to rule out if they have that type of problem

 

Yes thank you for the update.
I too have an intermittent ABS light though not quite as you've described.
I get it over a long series of bumps like a bad dirt road or one big bump which leads me to believe i have a bearing issue but I can never get a code telling me which wheel to look at.
However I will check that wire now as well. I had work donw in that area a few yrs ago and it seems the light came on after that period.

 

It is a known problem and there is a recall on it regarding the wiring harness at the end of the brake fluid resovoire under the hood. Check that wiring first, as it is usually the cause of most abs issues.