Hi, I have a rough idle i was told to run seafoam through the car. I need a little help with that..i know i need to put 1/3 of the can in the crank case, 1/3 into the gas tank, and 1/3 into the main vacuum line...i dont know where that is and need help locating it. I also was told to clean my IAC and EGR valve...need help locating them and how to clean them..if there was a diagram that would help...hopefully this will solve my idle issue, thank you.

 

IAC= in throttle body ...
EGR= Rear middle of plenum ...

Vacumn line = attached to intake OR you can get a spray bottle and squirt it in directly

 

alright, i found the throttle body..not sure how im going to get to that..but where is the plenum exactly? i would like to clean/change the EGR valve..but i have no idea where that is..

 

if you put seafoam in your crank case, do so right before you plan to change the oil, as the stuff really thins it out and cleans up the gunk, and you want to drain that stuff.

 

plenum= what the tb is attached to the egr is dead center near the firewall

 

I had that rough idle on my daughters 96 2.5 and it turned out the rubber o-rings on the injectors were dryed out & leaking. also had a slight gas smell and this fixed both problems.