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vapor canister

  1. 2002 Tundra (4.7L) P0440 Engine Code

    Began getting P0440 date code about a year ago on my 2002 Tundra (4.7L). I have replaced all of the vacuum lines in the engine compartment, vapor canister, VSV for evap, VSV for pressure switching valve, and fuel cap. When I replaced the vapor canister, the CEL stayed off for a month, but then...
  2. Diagnosis by elimination (po442)

    Question here: 1 month ago, check engine light came on. Not surprised, actually, because the truck had started to run VERY roughly. Service department recommended a full fuel system treatment including changing fuel filter, additives, etc. Tab came to about $300...a little steep, but the...