Chevrolet Sonic Repair Manual: Toe Description
Toe is a measurement of how much the front and/or rear wheels are turned in or out from a straight-ahead position. When the wheels are turned in, toe is positive (+). When the wheels are turned out, toe is negative (−). The actual amount of toe is normally only a fraction of a degree. The purpose of toe is to ensure that the wheels roll parallel.
Toe also offsets the small deflections of the wheel support system that occur when the vehicle is rolling forward. In other words, with the vehicle standing still and the wheels set with toe-in, the wheels tend to roll parallel on the road when the vehicle is moving.
Improper toe adjustment will cause premature tire wear and cause steering instability.
Tires and Wheels Description and Operation (Tire Identification)
Identification
Accessory and warranty replacement must use TPC spec tires.
An outboard orientation stripe is added to the tread surface, with an
offset toward the outboard tire fa ...
Torque Steer Description
A vehicle pulls or leads in one direction during hard acceleration. A vehicle
pulls or leads in the other direction during deceleration.
The following factors may cause torque steer to be more ...
Other materials:
If No Steam Is Coming from the Engine Compartment
If an engine overheat warning is displayed but no steam can be seen or heard,
the problem may not be too serious. Sometimes the engine can get a little too hot
when the vehicle:
Climbs a long hill on a hot day.
Stops after high-speed driving.
Idles for long periods in traffic.
If the ...
Brake Rotor Thickness Measurement
Warning: Refer to Brake Dust Warning.
If the inboard friction surface of the brake rotor is not accessible, reposition
and support the caliper with the brake pads. Refer to Front Disc Brake Pads
Replacement.
Clean the friction surfaces of the brake rotor with denatured al ...
Intake Manifold Cleaning and Inspection
Clean the intake manifold mating surfaces.
Inspect the intake manifold (2) for damage.
Inspect the intake manifold for cracks near metallic inserts.
Inspect the crankcase ventilation passages in the intake manifold face for
blockage.
Warning: Wear safety glasses in or ...
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