1978 Jaguar Xj6

The 1978 Jaguar XJ6 has 3 recalls, the most serious being two separate issues that can affect vehicle control: a throttle valve that can ice up and stick open in extreme cold, and an exhaust pipe that can physically press against the steering column and restrict steering movement.

In temperatures at or below -10 degrees Celsius, ice can form on the throttle butterfly valve and hold it in a partially open position while cruising, preventing the driver from reducing engine power by releasing the accelerator. On the steering side, certain exhaust pipes missed a reshaping step during manufacturing and sit too close to the steering column coupling joint, where contact between the pipe and joint can bind up the steering and limit how far the wheel can turn. The third recall is less urgent and involves the engine control unit's wiring harness, which may not be properly grounded. When the ground connection is weak, the engine can run with too much fuel relative to air, causing rough idle and exhaust emissions that exceed federal standards.