just curious. i know runs by vacuum. when i put a trickflow intake and kirban AFPR last year i had to dent the egr valve pretty good in order for it to fit. i've heard of many people doing this. car has ran great until the other day. ran the codes and code 33 (i think) came up "canister or egr valve not operating properly".
how exactly does the egr valve work? is there some type of plunger or something that has to move up and down that i may have messed up by doing this? like i said, the car has ran great up until this point, so why would the egr be the problem. maybe i just need to take it off and clean it good again. i had to do that a couple years back.
how exactly does the egr valve work? is there some type of plunger or something that has to move up and down that i may have messed up by doing this? like i said, the car has ran great up until this point, so why would the egr be the problem. maybe i just need to take it off and clean it good again. i had to do that a couple years back.
It doesn't necessarilly mean the egr valve is the problem. The easiest way to check the valve w/o removing it is to apply direct vacume to it at idle and see if the engine idles rough or shuts off. If it does than the valve is ok and the egr soleniod is not functioning properly or you lost the vacume source to the valve. If you have no action at the valve than it's either the valve itself or the egr ports are clogged. Never seen the ports clog though. 
