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Matt, Engineer
Category: Jaguar
Satisfied Customers: 21852
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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I have a 2008 Jaguar XKR with under 50,000 miles. It runs

Customer Question

I have a 2008 Jaguar XKR with under 50,000 miles. It runs strong but recently (every other day or so) I get a rough idle at start and an engine light (code P050B) coming up, which translates to "Cold Start Ignition Timing"- what does this mean? Where should I start troubleshooting?
Submitted: 1 year ago.
Category: Jaguar
Expert:  Matt replied 1 year ago.


if the ignition timing is out of spec then yes you will have a rough idle

I'd check the cam position sensor connection and wiring and do the same for the crank position senor

Expert:  Matt replied 1 year ago.


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