If the codes you have are the ones you say then you may have a wiring problem. The wiring harness that runs along the back side of the intake on those years would rub through the harness and cause numoruos problems even stalling. There was a campaign on it ( "EN" ). hope that helps.
Hey Max, i have codes P0455 and P0401 coming up. To clean the EGR valve do i need to remove the intake manifoild as well. Also the P0455, i changed the gas cap first and the codes came back. where should i look next. Where would i find the canister ? Is there a way to check the sensors first.
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