So I just completed the mk4 aluminum rear caliper upgrade, did my e-brake cables while I was down there. They work and everything, my parking brake is nice and firm now. Turns out the right rear was the only one seized, but anyway:
Now when I hit the brakes hard, the ABS light and red brake light come on, then go off. I tried braking pretty hard and the ABS is indeed not working under hard braking, I skidded pretty well until I let off the brake, got a pretty solid chirp from the tires.
This problem is new to me after putting on these new calipers. I seriously doubt it could be the calipers themselves, but what are my likely culprits? I'm guessing air in the rear lines or perhaps I've gotten the sensors dirty in the rear. Or even broken them. I had to pound off the right rear caliper with a BFH pretty hard.
Anyone got any ideas, or similar experience that they've conquered? I don't have the $$$ to delete the ABS unit at this point, and I'm starting a new job on the 22nd that I'll need the car for six days a week, so I won't have much time to mess around with brake stuff soon.