3800 Brake/ABS question

[Fish]

A couple weeks ago we were out at Staceys and I noticed that my ABS light came on. I figured it was a wheel speed sensor and would take care of it later. Only really NEED ABS in the winter.

However, it doesnt come on all the time. And when it doesnt, the ABS will pulse as I brake while in a turn. (usually always a right turn) Sometimes the ABS light comes on then, and some times it doesnt.

Ive worn brakes out before and didnt notice any ABS light on. Could it still be a wheel speed sensor only, or you think I need some new pads as well??

TIA

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[SaturdaysGS]

Sounds JUST like my car.. FIRST check the wiring, it could be shorting out, hence why it is intermittent, and or happens in a turn. Otherwise its more then likely a HUB. Mine is definately the drivers front HUB, sometimes I apply the brakes and the ABS does its thing (under normal braking) sometimes the ABS light comes on right after startup, and other times the car will be fine throughout the duration of the trip.

Oh yeah, the grinding / growling noise was a dead give away that my DF HUB was starting to go bad. BUT Ive had a HUB that made no noise, just died.

 

[xierxior]

I had a similer problem where I'd only get an abs light intermitted but it my case it turned out to be just a bad hub assembly that had a skewy sensor or something.

 

[imported_PaceCarBoozer]

Originally posted by SaturdaysGS@Sep 21 2006, 09:30 PM
Sounds JUST like my car.. FIRST check the wiring, it could be shorting out, hence why it is intermittent, and or happens in a turn. Otherwise its more then likely a HUB. Mine is definately the drivers front HUB, sometimes I apply the brakes and the ABS does its thing (under normal braking) sometimes the ABS light comes on right after startup, and other times the car will be fine throughout the duration of the trip.

Oh yeah, the grinding / growling noise was a dead give away that my DF HUB was starting to go bad. BUT Ive had a HUB that made no noise, just died.

[snapback]140257[/snapback]​

I'm having that problem right now, the ABS pulsing under a good brake, but nowhere near the amount of pressure that would be necessary for the ABS to engage. I get no lights though, and my hubs arent making any noise. Brakes are brand new all around with freshly rebuilt calipers all around (new boots, sliders, comptetely cleaned, new lube). I didn't bleed the brakes out, could air in the line cause this. Oh, it did all this before the brake job as well. Sorry for the novel.
CJ

 

[SaturdaysGS]

Originally posted by PaceCarBoozer+Sep 22 2006, 03:22 PM-->

<!--QuoteBegin-SaturdaysGS

@Sep 21 2006, 09:30 PM
Sounds JUST like my car.. FIRST check the wiring, it could be shorting out, hence why it is intermittent, and or happens in a turn. Otherwise its more then likely a HUB. Mine is definately the drivers front HUB, sometimes I apply the brakes and the ABS does its thing (under normal braking) sometimes the ABS light comes on right after startup, and other times the car will be fine throughout the duration of the trip.

Oh yeah, the grinding / growling noise was a dead give away that my DF HUB was starting to go bad. BUT Ive had a HUB that made no noise, just died.

[snapback]140257[/snapback]​

I'm having that problem right now, the ABS pulsing under a good brake, but nowhere near the amount of pressure that would be necessary for the ABS to engage. I get no lights though, and my hubs arent making any noise. Brakes are brand new all around with freshly rebuilt calipers all around (new boots, sliders, comptetely cleaned, new lube). I didn't bleed the brakes out, could air in the line cause this. Oh, it did all this before the brake job as well. Sorry for the novel.
CJ

[snapback]140361[/snapback]​

[/b]

You probably should bleed the brakes / replace the fluid (or atleast as much as possible).. I just drove 300 or so miles this weekend (150 each way about) and got ZERO ABS problems, but on Thursday I got the pulsate when braking and the car lunged forward and went a wee bit further then I would have liked when I was stopping, well attempting to stop for a stop sign. About 5 minutes later the ABS light came on. For me I'm sure its the HUB, but for you, it MIGHT be air in the lines, or a HUB who's ABS sensor is starting to go screwy. Like I said, I had one HUB grind and grind and grind and set no light, I had another make no noise, but start to slowly act (randomly working, sometimes random pulsation), and then this one the whirs, and randomly acts up.

 

[Fish]

Well, I narrowed it down to where it basically just does it in a turn. When the wheels are going at different speeds. So Im going to have to check the wheel speed sensor wiring. If thats fine, looks like Ill need a new sensor/hub.