1995 Ford Probe Q&A

1995 Ford Probe Question: would the master cylinder cause the brakes to lock up?

I changed the calipers and the brakes and the hoses and the brakes still continue to lock up can only drive maybe 2 blocks. also changed the paportion valve but was from salvage yard -
Answer 1
Yes, if it stays in the depressed position it would lock up the brakes by keeping the fluid under pressure. Similiar to driving with your foot on the brake and hitting the gas. -
Answer 2
Is it one wheel or all 4 that are 'locking up'? master cyl/ booster inspected? Drum or disc in rear? -