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Dash board light "restricted performance" comes on and the…

Customer Question
Dash board light...

Dash board light "restricted performance" comes on and the car runs rough. if excelerated it misses some times.

Mechanic's Assistant: Have you checked the fuses? The dashboard bulbs?

Yes

Mechanic's Assistant: What is the make/model/year of your car?

Jaguar XK8 2004

Mechanic's Assistant: Are you fixing your XK8 yourself? What have you tried so far?

All the plugs are changed. All the fuel injectors have been changed out

Submitted: 7 months ago.Category: Jaguar
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Answered in 26 minutes by:
12/22/2017
Jaguar Mechanic: Richard, Jaguar Technician replied 7 months ago
Richard
Richard, Jaguar Technician
Category: Jaguar
Satisfied Customers: 15,799
Experience: 12 years at a Ford/Lincoln Mercury and Jaguar dealer as technician and shop foreman.
Verified
We may have a problem with one of the ignition coils as it is not stated they were replaced just the plugs and injectors. It also could be a harness issue. We need to see what the current fault codes are that the ECM has stored so we can try and pinpoint the root cause. Most generic OBD II scan tools shou I'd be able to read the fault code. Most major parts stores should have one to loan out.Let me know.
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Customer reply replied 7 months ago
I am not a mechanic but use a friend that worked on my 41 Plym woody and 32 902 Packard and my modern cars and is computer savvy I will see him Monday of Tuesday. Thanks for the coil issue as we had one before and he switch coils and the problem followed to the other side. Tell me if I am wrong but he may have only changed the bad one. Could be he needs to replace this side. Should I just have both changed?I love the car and my wife looks too cute in it so I want to keep it in my collection. Thanks we will keep in contact. Thanks
Jaguar Mechanic: Richard, Jaguar Technician replied 6 months ago
Just checking in to see if you have any updates.The question is still open on my end.
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Richard, Jaguar Technician
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Satisfied Customers: 15,799
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