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Matt, Mechanical Engineer
Category: Car
Satisfied Customers: 22736
Experience:  BEng hons Mech engineering, in auto industry 22 years
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Jaguar 2002 3 litre petrol wont start. Plenty battery power turns over no spark. Fus

Customer Question

Jaguar 2002 3 litre petrol won't start. Plenty battery power turns over no spark. Fuses checked & fuel pump etc.
Been in garage workshop 5 months and they can't start it?
Submitted: 3 years ago.
Category: Car
Expert:  Matt replied 3 years ago.

If there's no spark then check that there's power to the coil pack using a meter. If there’s 12V at the pack but no spark then check the ECU power supply (fuse and relay) and also the connections to the crankshaft speed sensor.

if the ECU power checks out then I'd replace the crank speed sensor as the next step