Can a lay man do it and how will I know if it needs to be replaced?
I have the same car, but haven't had this problem (yet), I've had others (I believe it to be the infamous intake gasket fold), but this was on the list of things to check.
Yes, you can do this yourself. The EGR is on the driver side, mounted on the intake underneath the air intake line. You might just need to clean it up a little though with some carburetor cleaner, a toothbrush, and by using a torxx wrench to gently move the pintle up and down while turning it left to right. If it gets stuck when you move it (doesn't pop back down), then you definetly have been having trouble with it...just tap it on the side with a wrench and it'll pop out. Repeat until it moves easily.
To remove the EGR:
1. remove the air intake line by loosening the hose clamps on intake manifold and the air filter box. Also remove the other hose running from the valve cover to the air intake.
2. disconnect the electrical cable from the top by pulling the tab out and pulling the cable up
3. Use a 10 mm socket and and extension bar (at least 4") to loosen the two bolts holding the valve on.
It takes about 10 minutes, 20 max to do, and is far cheaper then spending $180 for a new valve!
We had the same problem. we bought carberator cleaner and took out the egr cleaned it really well. and it passed the retest..
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I just had the same problem. Napa told me it cost about $80, and would take about 1/2 to fix.
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