I have just had the upper intake manifold replaced, now I have a P0410 EGR Insufficent flow code. The repair shop said that they didn't touch the EGR Value, and suggested replacement, I did this the 3 tubes looked clear. The codes were reset and after about 40 miles the code was back the same as the first time it came on.
What could have gone wrong with the intake manifold replacement that would have caused this problem? How do I approach the repair shop to get them to own up to them have making an error in repair?
The other repairs that were done where the valve cover gaskets and oil pan gasket where replaced to correct oil leaks.
Sunday, August 5th, 2007 AT 6:59 PM