We have fitted a new engine in my x type it does start but only revs to 2500 the engine sounds good ,I have sent it for diagnostic checks now it won't run at all I have changed the ecu but it is saying that the imobaliser is not talking to the engine please help


Asked by Apr 30, 2016 at 04:11 AM about the 2004 Jaguar X-TYPE 2.5

Question type: Maintenance & Repair

3 Answers


What are the results of the diagnostics? If you do not have the correct PCM computer it will not communicate with the anti theft. did you replace the '04 x type engine with the correct year PCM that's the cars computer it needs to match the cars year and be programed for the Jaguar x type 2004 car. This is all basic electronics and computer programing / flashing same as firmware where on any computer. If you don't know how, find a service center that has the Ford / Jaguar Scan tool IDS-VCM


Your first mistake was buying the 21st Century Jag- your second mistake was thinking you could fix it-

1 out of 1 people think this is helpful.
Bob Beaman

Jamnblues, from my brain to this forum. That's another 10 points for you.

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