Jaguar Repair Questions? Ask a Mechanic for Answers ASAP
Thank you for using JA. I am one of the experts.
I guess you mean the EGR valve. What were the fault codes stored on the vehicle?
Has the garage tested the glow plugs?
If you can get the fault codes, I can assist you further otherwise I will be speculating instead of actually helping. If the EML is on, there must be faults present and therefore, fault codes stored.
Any decent scan tool can read fault codes, I've used chinese brands in the past and have had no problems apart from the the scan tool altering the fault code slightly.
If you can get the fault codes, I will be available to assist you further.
If I am not online, just post the fault codes on this comment thread and I'll have a look and respond ASAP