i have a check engine light and a 404 code on my 2006 300 Limited 3.5L. i have a replacement and a gasket for the upper intake, along with the service manual. Is there anything in particular that I should look for or do while changing the EGR? Any tips or tricks?

Thanks in advance!

 

I did the job today, so far so good. I decided to change the spark plugs too, just in case. The car has 61K miles so it wasn't due, but I thought that with having the CEL on for a while, if there was any chance that there had been any issues, I'd rather change them while I had the upper intake removed.

I reviewed the manual and took my time, probably spent about 3-1/2 hours from disconnecting the battery to test-driving. It wasn't too bad if you have a decent array of tools. There were no really problematic steps, just some tight quarters. I couldn't see changing it from underneath the car with the upper intake in place, it would seem to be way too tight, but people have said they did it that way.