* Leaking Fuel Lines/Fuel System Issues: Age and deterioration of rubber fuel lines, particularly those near the engine's heat, could lead to leaks. A fuel leak near a hot component could easily ignite. This was a more general problem impacting many cars, not specific to the Fiero.
* Electrical System Problems: Short circuits in the wiring harness, especially if poorly repaired or modified, could generate sparks and ignite flammable materials under the hood. Again, this wasn't unique to the Fiero but a possibility in any car.
* Exhaust System Leaks: A hole in the exhaust manifold or pipe could allow hot exhaust gases to come into contact with flammable materials.
* Engine Bay Contamination: Oil leaks, grease, or spilled fluids in the engine compartment could increase the risk of a fire if a spark or hot component is present.
* Aftermarket Modifications: Improperly installed aftermarket parts, especially performance modifications involving fuel systems or exhaust, could significantly increase the risk of fire.
It's crucial to remember that while these were *potential* causes of fire in a 1987 Pontiac Fiero 4-cylinder, widespread fire problems weren't a defining characteristic of the model. Proper maintenance, regular inspections, and addressing any fuel leaks or electrical issues promptly would greatly reduce the risk. The car's reputation was more tarnished by its reliability issues (engine, transmission, etc.) than by widespread fires.
