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P0440 Diagnostic Trouble Code Discussion for April 2008

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
1999 Oldsmobile Aurora 4.0L Poor Idle Quality, Hesitation, Misfire VIN: 163GR62C0X
P0440: EVAP System Malfunction. This vechicle came in for MIL and poor idle (miss at idle) I pulled codes, found the laundry list, and constant misfires on #5. Since this vehicle is a regular in my shop, I peformed a inj. flow test and resistance test since I just istalled plugs and wires ab...
April 09, 2008
1997 GMC Jimmy SL 4.3L MIL Lamp on VIN: 1GKDT13W7V
P0440: EVAP System No Flow During Purge. Need help locating vent valve assembly
April 30, 2008