XJ XJ8 / XJR ( X308 ) 1997 - 2003

If My Fuel Pump Has Failed Wont I Get a Code or something?

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Old 10-06-2013, 03:55 PM
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Default If My Fuel Pump Has Failed Wont I Get a Code or something?

If my fuel pump has failed wont I get a check engine light or something indicating low fuel pressure?

Thanks

Eric
 
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Old 10-06-2013, 05:36 PM
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No! If you had a failing fuel pump, you MIGHT get a lean run engine code, but there is no fuel pressure sensor to tell the ecu that pressure has failed. There is, however, a good test port on the X-308 to measure the pressure with a test gauge.
 
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Old 10-06-2013, 09:07 PM
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I can confirm that, shocking as it is, no code is thrown when a fuel pump fails.

I was cruising along at 60 MPH on a country road when, suddenly - pfffffft - I applied the accelerator and had no power and coasted to a stop. I carry an OBD-II code reader with me and there were none.

It was only after ruling out a wide number of other possible causes for "sudden engine stop" syndrome that it was determined to be fuel starvation secondary to a dead fuel pump.
 
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Old 10-06-2013, 10:08 PM
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Thanks guys

A new pump and filter are in and my cat is purring again.

Eric
 
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