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Matt
Matt, Mechanical Engineer
Category: Jaguar
Satisfied Customers: 20605
Experience:  BEng hons Mech engineering, in auto industry 22 years
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I have an 2.2 Xtype diesel which will run for 50 miles at 90mph

Customer Question

I have an 2.2 Xtype diesel which will run for 50 miles at 90mph then just stall. If I switch off and leave for a few minutes it will start again and carry on for another 50miles at 90mph. Very difficult when you are on the motorway.
Submitted: 2 years ago.
Category: Jaguar
Expert:  Matt replied 2 years ago.

Hello


This sounds like an electrical actuator or sensor at fault .Usually when you can cycle the ignition key on / off and then restart the engine and the fault is gone temporarily this indicates that this is an electrical component causing this issue.

This could be a wiring issue as things tend to expand when hot and its possible a poor or partial electrical connection is being pushed apart on one of the major sensors so check the connection plug and wiring to the following;

Airflow meter

Crank position sensor

Cam position sensor

O2 sensor

Throttle pedal position sensor

Also worth checking the connections to the fuel pump for the same reason - unplug each in turn and give them a good squirt of switch / contact cleaner - Not WD40

and also unplug and inspect the main power relays and fuses for signs of overheating or corroded terminals - so the ones for the ECU and the fuel pump

And also unplug the wiring loom connections in the engine bay one at time and inspect for corroded or recessed pins.

Customer: replied 2 years ago.

I do not have the expertise to carry out these checks, but will take your advice to my garage and get them to check it out

Expert:  Matt replied 2 years ago.
no problem David


just get back to me on this post if I can help further

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    Matt

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