I have a 2000 v70 xc. Pulls to the left under braking. All hub bearings are good
Calipers are in good working order. What could it be. Do you think it could be control arm bushings?

Any help would be appreciated.

 

Warp rotor or tire it self is the culprit.

 

how did you test the calipers? You may have a stuck valve in the ABS pump (ie not pushing pressure to that wheel - had that happen on my S40). regarding suspension parts, if you had a problem with the control arm bushing or a worn tie rod or ball joint, you'd feel it driving and cornering - ie going on a curvy road does the car start one line then pick another? A worn hub/ bearing would making a moaning noise typically starting at 20 MPH.. I'd focus on the braking system - To start, I'd pull the caliper off, inspect the pads, give them a light sanding, clean the rotor/lightly sand (ie 400 emory cloth) to remove any glazing, check the caliper for any leaks/torn boots. For a test drive, what happens when you try a hard stop? Does it just pull or does one of the wheels tend to lock up prematurely? (ie may or may not trigger the ABS)? Then I'd see if there's any odd handling characteristics. Keep in mind these cars have diagonal feeds, so a problem with the front left brake caliper (ie a stuck caliper) would influence the right rear wheel...