advise needed ! with cleaning product, clean inside or not ?? Options

[Culpable04]

I had the check engine light on so when I got the code it was 71 that's a EGR valve problem so I replace the EGR sistem ( hoses, valve ) the car is driving wayy better now but after like one hour driving the check engine light came back on. and it's the same code ( 71 )

what can be wrong with this ?


what should I be looking for ?

Do I need to replace something else ?

any help would be great.

thanks.

update

I got this valvoline and I cleaned the intake manifold, but the instructions on the product says to spray it inside the throttle body, but I'm not sure if that would damaged the engine or not. would it be ok if I open the little intake valve and spray this product in here ? see picture below



This post has been edited by Culpable04: Jul 8, 2006 - 4:30 PM

[morbiddelusions]

hey when you replaced the valve did you clean the hole in the intake if it is like mine was it was full
of carbon as in completely blocked and if it is blocked it will do the same as before.
also you may want to clean the tube that hooks to the valve itself.
good luck.