A cap rotor (or more accurately, distributor cap and rotor) is part of the ignition system in older vehicles like your 1994 Wrangler (assuming it has the older style ignition system; some later models may have different ignition systems). Its function is crucial:
* Distributor Cap: Distributes high voltage from the ignition coil to the correct spark plug at the precise moment. It's a plastic cover with terminals for each cylinder.
* Rotor: A spinning component inside the distributor cap that directs the high voltage from the coil to each terminal in the cap sequentially.
If your 1994 Wrangler is experiencing starting problems, misfiring, or running rough, the cap and rotor are prime suspects. They can wear down, get cracked, or get dirty, leading to poor ignition performance.
