Yo B,
If the condition is engine-speed sensitive, the condition is not related to tires.
Anyway, Inspect:
●
Retain all normal loads in the vehicle. Inflate all tires to the pressure specified on the Safety Compliance Certification Label (usually located on the inside driver's door pillar).
Check both front tires and make sure they are the same size, ply rating, and load range.
Inflate all tires to specified pressure (cold). Check both front tires for the same size, ply rating and load range.
Check for excessive front wheel bearing end play. Refer to
Wheel Bearings, Front, in the Adjustments portion of this section. Adjust and/or replace the front wheel bearings. Refer to
Section 04-01A or
Section 04-01B.
Check for worn or damaged ball joints. Replace the ball joints or spindle pins (kingpins). Refer to
Section 04-01A (4x2) and
Section 05-03A or
Section 05-03B.Check for bent steering linkage or excessively worn joints. Refer to
Section 11-03.
Check the steering gear mounting bolts and tighten to the specified torque. Refer to
Section 11-02B or
Section 11-02D.
Inspect the radius arm if bent or damaged. Inspect the bushings at the radius arm-to-frame attachment for wear and looseness. Repair or replace parts as required. Refer to
Section 04-01A or
Section 04-01B.
- Check other suspension components for damage.
- Check for aftermarket changes to steering, suspension, wheel and tire components (i.e., competition, heavy-duty, etc.). Specifications in this manual do not apply to vehicles with aftermarket changes.