egr valve is usually on the back side of the engine,2.4l sohc is behind and below the intake manifold . It has a vaccuum line attached and these do crack and break.Also check the egr because they have a rubber diaphragm inside that can crack allowing the vaccuum to leak causing a problem.The other thing is the newer fuels are running the engines so lean that carbon builds up both inside the egr and what the egr port mounts to. Make sure they are both CLEAN!
change the egr valve
EGR Flow malfunction
well on my 2000 Chevy tracker it is an egr flow malfunction. Girl at autozone said it could be a egr blockage.... Mike
P0403 = EGR Flow circuit malfunction.
Just because a code that is titled to a particular system is noted does not mean that component is bad. Check the passageway.
My 2002 galant has a reverse flow system. The thermostat housing is in the radiator bottom hose. I had to take off the battery base to get to it.
Dealer needs to prove that the flow-master was the cause of the malfunction...
Somewhere between air filter and throttle body.
Yes, it would. While the Throttle plate is closed when not pressing on the gas pedal. The IAC is a bypass passage that allows air to continuous flow to the engine. I just had the same problem with my 2000 Mitsubishi Galant. I unplugged the IAC and the engine no longer wants to stall out, it just runs at a higher RPM to compensate for the nipple on the IAC not moving back to create the bypass passage.
2000 honda foreman 450s charging wiring diagram and charging system flow chart
Trouble code P0400 means:Exhaust gas recirculation flow malfunction
Trouble code P0100 means:Mass or volume air flow circuit malfunction