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P0399 Diagnostic Trouble Code Discussion for January 2015

Random Misfires


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Trouble Ticket Help Requests for DTC P0399
Help Request Posted
2003 Jaguar X-Type 2.5L Misfire VIN: SAJEA51D53
P0399: Random Misfires. ... rabbit hole - and be standing over top of it like Elmer Fudd. MAF readings - Assisting fuel trims seem to be working well. Oxygen sensors are functioning. Upper sensor seems a bit lazy at idle. But after I install intake / plenum seals I believe most of t...
January 24, 2015
2003 Jaguar X-Type 2.5L Misfire VIN: SAJEA51D53
P0399: Random Misfires. ... rabbit hole - and be standing over top of it like Elmer Fudd. MAF readings - Assisting fuel trims seem to be working well. Oxygen sensors are functioning. Upper sensor seems a bit lazy at idle. But after I install intake / plenum seals I believe most of t...
January 26, 2015