RWD - Check Engine Code P2407 Evap Pump Sensor P2177 too lean off idle, P0455 Evap

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Check Engine Code P2407 Evap Pump Sensor P2177 too lean off idle, P0455 Evap S90-V90

Hello,
I am trying to clear these 3 check engine codes: P2407 Evap SYS Leak Detect Pump sensor circuit intermediate, P2177 system too lean off idle speed, banks 1 and 2, and P0455 Evap sys control system leak large.

I am thinking that the large leakage code is the gas cap.

What does the "too lean off idle speed" point to? Is there a way to richen the off-idle-speed?

Where is the pump sensor circuit? Is that an air pump that feeds the exhaust manifold?

Thanks so much

Jerry

 





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New Check Engine Code P2407 Evap Pump Sensor P2177 too lean off idle, P0455 Evap [S90-V90]
posted by  someone claiming to be Jerry  on Mon Dec 29 11:54 CST 2008 >

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