1. Identifying the Problem:
Before adjusting anything, determine *why* your shifting is poor. Is it:
* Loose/sloppy shifting: Feels vague and imprecise, with significant play in the lever.
* Hard shifting: Requires excessive force to move the lever into gear.
* Missing gears: Certain gears won't engage.
* Specific gear issues: Only one or two gears are problematic.
2. Common Wear Points and Adjustments:
* Shift Linkage Bushings: These bushings wear out over time, leading to slop in the linkage. Replacement is usually necessary. These are located at various points in the linkage, connecting the shifter to the transmission. You'll need to identify which bushings are worn (they'll likely be cracked or significantly loose). Replacing them often requires removing the console or parts of it to access the linkages.
* Shift Linkage Rods: The rods themselves can bend or become worn, causing inaccurate shifting. If bent, they'll need to be straightened (if possible) or replaced. Inspect for any obvious bends or damage.
* Transmission Shift Mechanism: Issues *inside* the transmission, such as worn shift forks or detent springs, are much more complex to address and often require transmission overhaul or replacement. This is the least likely area to cause imprecise shifting but should be considered if other adjustments fail.
* Shift Lever: The shift lever itself can wear at the mounting point, creating play. Check for excessive movement where it connects to the linkage. This is usually addressed by replacing the bushing at that point.
* Cable Adjustment (if applicable): Some Fiero 5-speeds use cables, not rods. If yours does, check the cable's adjustment mechanism (usually a turnbuckle or similar). Refer to a workshop manual for the specifics.
3. The Adjustment Process (General):
There isn't a simple, universal adjustment. The process involves:
1. Inspection: Thoroughly inspect all components of the shifter linkage for wear, damage, or looseness. This is crucial.
2. Replacement (Most Likely): Most likely, you will need to replace worn bushings. This will significantly improve shifting.
3. Tightening (if applicable): There might be some adjustment bolts or nuts along the linkage, but these should only be tightened *after* replacing worn parts. Over-tightening can damage the linkage.
4. Reassembly: Carefully reassemble the linkage, ensuring everything is properly seated and aligned.
5. Testing: Test the shifting after making any adjustments. It may require multiple iterations of adjustments until it is satisfactory.
4. Resources:
* Shop Manual: A Haynes or Chilton repair manual for your 1985 Pontiac Fiero is your best resource. These manuals provide detailed diagrams, step-by-step instructions, and torque specifications.
* Online Forums: Fiero-specific online forums (like fieroforum.com) are valuable resources. Experienced Fiero owners often share their insights and troubleshooting tips.
Important Note: Working on the shifter linkage requires patience and careful attention to detail. Take your time, take pictures as you disassemble, and refer to a repair manual to avoid damaging any components. If you're uncomfortable working on your car's transmission, it's best to take it to a qualified mechanic.
