can i what engine and which codes remained
Engine: 4cyl 2.4L FI
the guy who checked the codes said "the knock sensor is still showing, and the engine light might turn on again, so drive it some more".
as soon as I drove it off, the engine light came back on.
see if i can give you enough info to do this yourself
well first p1400 isnt egr valve itself its the soleniod and you can basically test it with acar battery to see if its operating,see illustration (all illustrations will be at the end)
also for the knock sensorcheck for frayed wiring and make sure both grounds(F17 and F31 see illustrations)
when you test egr soleniod -powered up you will here and or feel a click
ok do this first and hopefully you will find your issue easily
oh man, does that mean that egr valve may not have needed replacement?
when i initially checked online for what the code P1400, it showed EGRC Solenoid Valve, but when i went to Kragen, the sold me the egr valve and stated it's basically the same thing.
also, i'm curious as to when the guy checked the coding again, it only showed the knock sensor as still being an issue.
should i just take it to a mechanic?
sorry to say its not the same thing
and may require more than i drive cycle to set
and on the knock sensor alot of times you will find its a bad ground or wiring
check the soleniod like i said if its bad you can probably find one in a salvage yard
let me know how it goes