anybody have the same problem? my car pushes to the left when i gas it hard at highway speeds.

 

mis-aligned?

 

Tire Pressure!!!!!!!

 

i had the same issue, my car drifted to the left....
i threw it up on the hunter rack at work n low n behold, i had little too much
cross caster goin left....so i just re-aligned it n problem solved
ahhhh the perks of bein a technician

 

Common question. The cause is USUALLY uneven tire pressures. If the tires and their pressures are correct, then it's almost got to be alignment.

Check the tire pressure first. Air is free, but alignment cost, so try the free stuff first.

 

Another possibility is having the wrong wheels in the wrong place (i.e) two rears on one side and 2 fronts on the other. Make sure the big wheels have the big tires on them and the small wheels have the small tires on them and that they are in the proper places and are rotating in the right direction.

 

One other thing that has only happened to one I know of (my dad's)...

If you get two rears from different mold lots (ie different color dots on them), then they might have a slight size variance. His only pulled under acceleration, but coasted straight.

But most likely, pressure or alignment

 

could it be my diff? it's definitely not the wheels or tires. the alignment should be ok too.

 

I doubt it. But you want to be sure that your tire pressures and allignment are correct both front and rear. When you accelerate hard, you actually transfer weight from the front to the rear of your car -- the front gets lighter and the rear gets heavier. While the most likely cause would be pressure/allignment problems on the rear, the fact that the front gets lighter on acceleration could cause it to behave differently too.

As for more exotic causes, I would guess that a dragging brake pad somewhere would be a more likely cause than a diff problem.

 

You may have a nail in one of your tires.