ok a little while back i posted about a weird tick/rattle.

the other day i described it to my teacher and he thinks its spark knock

because i keeping throwing p0401 which is EGR flow insufficient.

so has anyone ever encountered this with there car?

im trying to narrow down any possibillities before i dive in and fix the egr system

 

easiest fix for you get a Lancer evolution 8 ecu swap it in , disable the imobilizer , and disable all emission systems and do away with all those little vacume hoses and egr system all together...

 

I had a p0401 code being thrown about a year back. My EGR valve was pretty clogged with carbon buildup. Replaced it with a new one and code went away. Give that a shot.

 

Can you just clean it out or would it need to be replaced?

 

i'm having that problem now and i cleaned it twice and then replaced all those little hoses and still there ....i have an 06 lancer and my next step is to replace my egr solenoid..i don't know if your car has it, but would like to know.

 

They can be baught for a few dollars
Not worth the hassle of cleaning one.

Or am I mistaken with the pcv vavle?

 

Dealership or autoparts store I'm guessing?

 

yea your mistaken, but it all good.... RockAuto sells EGR valve for 02 lancer for $152 and another 1 for $233

 

how much do the 8 ecu's go for brand new ? is there a diy for this upgrade ?