The fuel delivery system in the 1988 Jeep Grand Wagoneer utilized a throttle body injection (TBI) setup. This system employed injectors mounted within the throttle body to spray fuel into the intake manifold. Over time, these injectors can become clogged or fail, leading to poor engine performance, reduced fuel economy, and difficulty starting. Repair often involves replacing the malfunctioning components to restore optimal engine operation.
Replacing the fuel delivery components in a vehicle of this era offers several benefits. Restoring proper fuel atomization and delivery can improve engine efficiency, leading to increased power and better gas mileage. Furthermore, addressing issues with the fuel system can prevent further engine damage and ensure the vehicle meets emissions standards. The historical context shows that this technology was a transitional step between carburetors and more advanced multi-port fuel injection systems.