4kq braking

[Mholme3 at aol.com]

I'm having a problem with the brakes on my 87 4kq.  The problem starts after 
The brake pedal is released.  The car brakes straight and the pedal feel is 
firm, but as soon as I take my foot off the brake pedal, the car dives left.  
At first, I thought it was the road conditions (grooves, construction, 
whatever), but it happens no matter what the road surface is.  I was thinking 
maybe a seized caliper, but that would probably make the car dive during 
braking and not after.  I also thought it may be the hydraulic system needs 
to be bled, but the pedal is very firm.  All suspension parts are new in the 
front so I ruled out bushings and strut bearings and the car was recently 
aligned by the dealer to spec.  Any help tracing this problem would be 
appreciated.

Marques 
87 4kq