[svxistentialist]

Originally Posted by Sean486

Damn code 34 came back again. It doesn't seem to effect drivability but there must be something out of whack.

That's not too surprising Sean.

The 34 code shows there is something wrong with the EGR solenoid circuit. A few things could be wrong, but as the code is displaying because of an electrical anomaly, there are two primary things to check; the actual solenoid could be conked out or the other possibility would be the EGR valve itself is stuck, and the solenoid is unable to move it.

The first thing I would try is the clean gunge from the actual EGR valve. As longass says you have to carefully take off the manifold to get near the thing. It might be a very good start to use a can of Sea Foam or other engine cleaner through the intake. This might dissolve out sticky deposits from the valve.

If doing that did not keep your code away you might need to lift the manifold, possibly dismount and clean the valve [and vacuum lines], possibly replace the solenoid. Clean the thing as much as possible in situ first though before you go to that trouble. At least I would.

Joe