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Matt, Engineer
Category: Jaguar
Satisfied Customers: 387
Experience:  Mechanical Engineer with 20 years experience in the auto industry, 8 yrs in formula 1 engine testing
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A light came on saying performance restricted and check

Customer Question

a light came on saying performance restricted and check engine light
JA: Does the light stay on solid or does it flicker? Any noticeable performance problems lately?
Customer: stays on. no performance issues. it was in a shop for a month getting completely painted
JA: What is the model/year of your Jaguar?
Customer: 99 van den plas
JA: What year is your Van?
Customer: 1999
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: I haven't tried anything it just happened
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Jaguar Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Jaguar
Expert:  Chad Farhat replied 1 year ago.

Hi, I'm Chad ,Welcome To JustAnswer, I'm reviewing your question and I will be be posting a replay ASAP

Expert:  Chad Farhat replied 1 year ago.

1-is there a check engine light on?

2-if you scanned & retrieved any faults codes ? if you did let me have the code numbers if you have them?

The most common cause will be the TB ( throttle body itself) or it is a vacuum leak causing it )

3-does it reset itself each time you cycle the ignition switch ?

4- what is the mileage on it ?

Please let me know

Thank You
Chad Farhat
ASE Certified Technician