For some reason I got the P1404 code the other day. I was sitting for a while in line at Taco Bell and I dont know if that had a thing to do with it.
I bought a new egr valve but havnt installed it and really dont want to since its such a waste.
I cleared the code and it hasnt come back yet but if it does whats the best way to clean it so I can take the new one back?
I also read that there were issues with cel light coming back on even when the egr was new.
is there a proper way to clean and then install it back on where it doesnt throw the code again?
I read something about removing the harness off the egr when re-installing and clearing the code and immediately turning off the key so that the computer doesnt set itself wrong.
all that I want to do is clean it and put the old one back on and save the money of the new one.
this is on my 98 Regal GS
