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P0400 (EGR flow malfunction), P1333 Make sure about this code its a chevy code so you will need to recheck,If anything the EGR is stuck open.Or you are dealing with a vacuum leak causing rough idle
DTC P0440 code indicates that a part of the EVAP
control system is no longer fuctioning correctly. The EVAP system consists
of many parts, including (but not limited to) the gas cap, fuel lines, carbon
canister, purge valve, and other hoses. The (EVAP) emission
control system prevents the escape of fuel vapors from a vehicle's fuel system.
Fuel vapors are routed
by hoses
to a charcoal canister for storage. Later, when the engine is running a purge
control valve opens allowing intake vacuum to siphon the fuel vapors into
the
engine. A code P0440 could mean one or more of the following has happened:
The gas cap is not installed or working properly
The purge solenoid has failed
The canister is plugged and not working properly
Additional details could find in this links Fault Codes
on Cars & Trucks or other diagrams in Cars &
Trucks Vacuum Diagram.
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Hi. Thanks for your question. For any assistance on Nissan cylinder you can visit https://www.reliable-store.com and download the entire workshop manual which includes all the information along with the diagrams for better understanding. Good day!
there is an EGR vacuum solenoid somwhere that controls on/off vacuum to actuate the valve. i am not to sure of the location, but follow the vacuum line back from the egr until you find a device that looks like an electrical check valve for vacuum. that is a possibilty. but then again i am a ford,chrysler guy and am just giving you an answer based on my understanding of the functuality of a vacuum egr system
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