There is no way to tell exactly how many miles to the gallon will you loose with a bad EGR. It depends on the car.
yes it will mine was dirty so i cleaned it. ex: i have full size silverado got 215 about on a tank. cost me about 55 to fill up. about 11.2 miles to the gallon now i get 360 about so about 16 miles to the gallon
yes
it will lose power
EGR valve is on the back of the engine by the firewall. take off the air cleaner completely and then look down the back of the engine and you will see a round object with an elogated egg shaped base with 2 nuts holding it on. I replaced mine and my gas mileage went up to 26-27 miles to the gallon
yes it will not only lose power it will run rough in some cases not run at all
I heard it is located on the back of the Engine. How many miles do you have? If it is for sure the EGR valve the dealership should have it under warranty for up to 50,000 miles since it is a emissions part. It is on the back on the driver side, kind of hides behind the intake manifold.
using a 1inch adjustable wrench break lose the bolt that connect the pipe and egr vale. once broke lose un screw it with your hand and then using a long neck 10mm sockit and a socket wrench un screw the 2 screws that are holding egr vale in place on the intake
P0401 "egr insufficient flow" can indicate many things, including: 1-vacuum line plugged or leaking 2-pipe from exhaust to egr valve plugged 3-pipe to vacuum modulator valve from egr valve plugged 4-passages at egr are plugged 5-bad egr valve 6-bad EGR VACUUM MODULATOR VALVE I tried cleaning egr modulator valve, (beside/above egr)removed and tested egr vacuum & movement, inspected and cleaned all vacuum lines openings and pipes. All above did not work. I replaced the egr vacuum modulator valve. Light went out without a reset in about 30 miles of driving. Not sure if this valve can be cleaned. Retails for $69.US
you should check egr valve and check for a vacuum leak
Try removing negative battery cable for 10 minutes. If that does not work you will need an OBD2 scan tool to reset the light. I just cleaned my egr valve and the check engine light went off and I drove it a little and it came back on how long do I have to drive my car after work with the egr valve how many miles
If you have less than 80,000 on it read below. Occasional problems on this vehicle are failures of the Exhaust Gas Recirculation (EGR) Valve Passages and the EGR valve (3.0L V6 engine only). Honda has extended the warranty on problems related to the EGR System to 8 years or 80,000 miles.
If you have an egr valve failure why are you replacing th oxygen sensor? Most likely the EGR valve assembly is blocked or partially blocked. Often they build up exhaust deposits on the EGR valve and ports.