Drive-ability Issue

[SubaSteve]

I recently had an alignment done which was supposed to fix some of the issues I was having but now I have more problems....

When I get on the throttle the car wants to pull to the left, I mean changing lanes pull to the left. The car feels like its also dragging abit and I have to use a tad more throttle to keep it at a constant rate of speed.

Recent list of things done to the car.
-SS Brake lines
-Anti dive kit
-front roll center correction kit
-camber bolts
-rear control arm camber correction kit

I had issues with the anti dive kit which I replaced a part that was causing it to shift the lca forward. But for the most part I can't pinpoint the issue.

[gramicci101]

Do you have the results of your alignment?

[wparsons]

^^ This, without knowing the outcome of the alignment it's just wild guesses in the dark.

[SubaSteve]

[stugray]

Your description sounds almost as if the VSC is trying to compensate for something with the "electronic LS diff" type of behavior.

No chance the VSC lights are blinking as it does this?
Other people have had issues after suspension or brake work because the traction control sensors (wheel speed sensors) were upset or damaged.

[SubaSteve]

This was the alignment I got before I fixed the problem with the anti dive kit. The front drivers side is where the issue was.

[SubaSteve]

Originally Posted by stugray

Your description sounds almost as if the VSC is trying to compensate for something with the "electronic LS diff" type of behavior.

No chance the VSC lights are blinking as it does this?
Other people have had issues after suspension or brake work because the traction control sensors (wheel speed sensors) were upset or damaged.

I'm going to go swap the two front tires and see if it still pulls to the left.

[wparsons]

It's not the TC/VSC unless you're getting wheelspin or the slip indicator light is coming on. If any of the wheel speed sensors aren't working right for any reason the TC/VSC gets disabled since the ECU can't trust the sensors to work right.

When you did the brake lines did you also pull the calipers and pads? Are the pads binding in place and not releasing fully? Is the caliper sticking on the slider pins? I'm assuming you properly bled the system after replacing the lines (right rear, then left rear, then right front, then left front - for a LHD car)? Is the fluid level good?

[SubaSteve]

Originally Posted by wparsons

It's not the TC/VSC unless you're getting wheelspin or the slip indicator light is coming on. If any of the wheel speed sensors aren't working right for any reason the TC/VSC gets disabled since the ECU can't trust the sensors to work right.

When you did the brake lines did you also pull the calipers and pads? Are the pads binding in place and not releasing fully? Is the caliper sticking on the slider pins? I'm assuming you properly bled the system after replacing the lines (right rear, then left rear, then right front, then left front - for a LHD car)? Is the fluid level good?

We did bleed the lines but I have a feeling that we did it wrong, and yes the fluid level is good. Just to factor the brakes out what would you suggest I do if I did it wrong.

[wparsons]

If you didn't pull the pads off the car in the process, chances are they aren't snagging in their mounts unless they were before as well.

If there is too much air in the lines it might cause the pads to drag a bit, but I would think you would feel a VERY soft pedal before that would happen.

[SubaSteve]

Just finished swapping the two front wheels and it still pulls to the left under acceleration. The thing that's driving me nuts is the fact that it goes in a straight line with 0 throttle.

[SubaSteve]

Could one of the rear brakes be causing this?

[ZDan]

Swap rear tires left/right. Direction of pull changes => bad tire.

You have checked the pressures, right?

[SubaSteve]

Checked the front and swapped those going to try the rears now.