Having problems with your 2003 Jaguar S-Type ?
2003 Jaguar S Type R 4.2L SC. Check engine light on with rough idle and computer statement stating that performance is restricted, engine will not exceed 2500 rpm? Any Hints?
Rent a scanner, read out any code(s), and pursue to repairs. It may be as simple as bad spark plugs and wiring, or worse, fuel problems from the injectors back to the fuel tank. A worn O2 sensor can cause improper fuel/air problems.
Repair Help & Product Troubleshooting for 2003 Jaguar S-Type
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