* Left-side steering linkage: This is the most likely culprit. Problems could include:
* Damaged or worn tie rod end: This connects the steering rack to the spindle. A worn or broken tie rod end on the left will restrict left turns.
* Bent or damaged steering knuckle: This part connects the wheel to the steering linkage. Damage here would severely impact turning.
* Steering rack issues: Although less likely to cause a one-sided problem, a sticking or damaged steering rack can restrict movement, particularly if the damage is localized to one side.
* Loose or broken cotter pin: Cotter pins secure the tie rod ends. A missing or broken pin could allow the tie rod to separate.
* Power steering system: While less probable to cause *only* a right-turn bias, a problem here could contribute:
* Low power steering fluid: Check the fluid level and condition. Low fluid makes steering harder in general but could worsen existing mechanical issues.
* Failing power steering pump: A failing pump may struggle to assist steering in one direction more than the other.
* Leaking power steering hose or rack seal: Leaks will reduce the effectiveness of power steering.
* Wheel bearing (less likely): A severely damaged or seized wheel bearing on the left could contribute to restricted turning, but it's less likely to be the *sole* cause of this specific problem. You'd likely experience other symptoms like noise or vibration.
* Brakes (extremely unlikely): A seized brake caliper on the left would make turning left very difficult, but this would usually be accompanied by other significant problems like overheating brakes and difficulty stopping.
What to do:
1. Safety First: Do not drive the truck until the problem is diagnosed and fixed. Driving with severely restricted steering is dangerous.
2. Visual Inspection: Carefully examine the left-side steering linkage components for any visible damage, looseness, or leaks. Look for bent tie rods, damaged boots (protective covers on the tie rod ends), or anything out of place.
3. Professional Diagnosis: It's highly recommended to take the truck to a qualified mechanic for a proper diagnosis. They have the tools and expertise to identify the exact cause and perform the necessary repairs safely. Attempting to fix this yourself without experience could be dangerous.
The problem is likely a mechanical issue with the left-side steering linkage. A professional inspection is the best way to ensure your safety and get your truck back on the road reliably.
