I have a '91 GTA, front disc rear drum brakes, and ever since I got the car back in March, it's had a problem with pulling to the left when the brakes are applied.

I've since replaced the front rotors, brake lines, calipers and pads, but the problem persists.

Any suggestions?

 

It only pulls on braking?

 

Yes.

The car stays pretty straight during normal acceleration or riding along, but tends to pull just ever so slightly to the right. But when the brakes are applied, depending on how hard they're applied, the car will pull hard to the left.

 

I had a very similar problem with my car when I first got it. But mine was the opposite and a little worse. The right front brake would sometimes stick, and pull the car to the right. But, even when it did not stick, whenever I would press the brakes, the car would still pull that way. I just replaced everything, brake lines, calipers, brake fluid, brake pads, brake booster, and master cylinder. One of those fixed the problem. Not sure which though. I guess that didn't help much did it? Sorry.

 

Well, I replaced all of those except the booster and master cylinder, and nothing changed. So if nothing else, we've narrowed it down

 

could a warped rotor be causing the pulling? my car did the same thing, but it turned out to be the brake line.

 

I don't think so, I replaced both front rotors and nothing changed.

 

When you installed the new calipers did you make sure you lubricated the slide bolts? If they are not lubed they could seize and not apply brake pressure evenly and that could cause a pull. Just a thought...