ABS Light won't leave

Well My ABS light will not go away. When the car was getting supercharged the teck said my rear left tiar was reading that the car was going 4mph at any speed. He checked it out and figured out that the sencer was cracked/broke. I replaced that last night and the light still didn't go away. I got frustrated so I went out driving around. The car stalled out on me after putting it in neutral pulling up to a stop sign... As it so often does. So I started the car and the light was gone. When I pulled up to a stoplight the ABS breaking system went off light I was sliding (from about 5mph to 0). I was some what happy, but I also don't want that happening. I took off from the light and the god damn light came on again.

Any help would be greatly apreciated.

Suspetion mods are:
18x9.5 rims, with a 1.5 drop if that could mess anything up?

Thats for all responces ahead of time.

My ABS light is on.
New update. Got the car out of storage after work today, the light was on and before I even made it to the street it went off. Now my abs goes off every time I stop. It's like the car thinks its sliding ever time I stop... Any clue what it is?

I did the work myself.
I replaced the peace that goes from the wheel all the way up under the seat. Only thing that looked broke on the original peace was the part that connects to the wheel.
Nothing else appeared to be bent, out of shap, cracked, or unconnected.
I guess when it was getting checked it was only the one wheel giving of the bad readings. It was saying the rear left wheel was moving at 4mph at all times.

Any ideas or did I take you the wrong way?