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P0440 Diagnostic Trouble Code Discussion for February 2010

General EVAP System Failure

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Trouble Ticket Help Requests for DTC P0440
Help Request Posted
1996 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G3HN52K8T
P0440: EVAP System Malfunction. ... about 2 monthes. car first came in with check engine light on. found p0440. after smoking system and working purge and vent valves numerous times found vent valve sticking and cracked hoses going to canister. replaced vent valve and hoses and shipped car. ...
February 01, 2010
2001 Chevrolet Cavalier 2.4L Poor Idle Quality, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G1JF52T31
P0440: EVAP System Malfunction. Customer complains of surging when coming to a stop and poor fuel economy. I verified the surge/misfire at idle in P/N or D/R in service bay and during test drive. Also power is good and car has no driveability issues off idle. I checked the fuel injectors wit...
February 03, 2010