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On a 1991 jaguar what is code 89fuel?

Code 89 on a 1991 Jaguar indicates a fuel injection system fault. Specifically, it means the fuel injection system has detected a fault in the oxygen sensor or the fuel mixture.

Possible Causes:

- Faulty Oxygen Sensor

- Faulty fuel injectors

- Vacuum leaks

- Faulty fuel pressure regulator

- Clogged fuel filter