Originally Posted by lawabidn
another test is to actually push the EGR valve from undernieth... you can fit your finger undernieth the saucer while the car is running.
if you push it up and the car stalls and or dies... the egr valve works. Then clean the lines with super solvent and go on your way . you might have to just take off the EGR valve and lines anyway to look into the manifold to see if there is blockage (KA powered trucks are notorious for this, the design of the intake makes the EGR ports get caked in soot, its normally rock hard and takes some time to clean properly)
Yeah man, Looks like the tubing was bad/clogged? Was able to check the tubes, spray cleaner in there and when I pulled on one between the valves it just disintigrated in my hand, at least the end did, and in the middle was this lump, really hard, and I'm like is this a chunk of soot or what?
NO! It was a little metal (brass?) piece that is round around the diameter and about as wide as the tube with this pinhole (yeah a pinhole in the middle)
Now is this a dislodged valve part (EGR valve broken?) or is it supposed to be in the tube obstructing the flow? Great design!!! This pinhole won't flow nothin so I chucked it. If it works great, if not it's valve time, I think my new silicone hose and the lack of the little metal pinhole cork device may make a slight improvement in the EGR flow.
I will check to see if it's functioning with the push the valve test tomorrow.
I've only driven once since so I'll give the ECU time to see multiple trips before I can say "fixed".
I would sure love to pass emissions and this is a BS code anyway.
TO pass emisions I can also just clear codes and reset all sensors but one or two of the "emissions readiness monitors" and they have to pass it because the light "works" and the CEL is "off" and a 96-98 can have up to two monitors not ready. This goes for 02 cat egr etc... but only two.
You will wanna check the monitors prior to pulling in to assure only 1 or 2 are not set more than two =fail. In this way you can pass "between codes" or before the ECU triggers the code but has set most monitors. HEHEHEEHEHE.