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Discussion Starter · #1 ·
On the way home from work yesterday and pulled into Walmart parking lot, when I applied the I heard what sounded like a slapping noise. When I let off the brake it stopped. Parked went in a got what I needed.

I had a short ride to my apartment from there and when I left the ABS light was on, but brakes still worked.

I shut off the when I stopped to pick up my mail. When I got back on the ABS light was off but still hearing the slapping noise when I apply the rear firmly. I also feel a slight pulsing through the rear brake pedal even when applied slightly.

The ABS still seemed to work when I applied the brake quickly and hard.

Pads were replaced about 6 months ago and brakes bled at the same time, flushed the brake system about a year ago.

Pulled the rear caliper off and made sure all 4 cylinders were working, they are. I bled all 3 brake cylinders and didn't appear to be much air, if any. The ABS function still seems to function when I slam on the brakes (both rear and front).

However, the master cylinder was low on brake fluid (couldn't see any indication of a leak)..but I don't think enough to cause air into the system, but can't be sure. Let's say some air got into the ABS module, would that cause the pulsating I'm feeling when I press the rear brake pedal? It happens even when I just softly apply the brake. It doesn't do it when the ABS fuse is pulled.

When I pull the ABS fuse, brakes work as normal without ABS no pulsating.

The front brake doesn't do it, only the rear. Are the front and rear ABS system totally separate?

Thanks,

Robert
 
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