EGR now is operating fine. Removed it, looked slightly dirty, cleaned it good. Checked its operation on the bench with the vacuum pump. Moves freely. The clog was between the TB and EGR in the manifold, as well as the TB. Before the clog, checked the EGR with a vacuum pump and it was opening/closing fine.
On the dyno, at cruise, the LTFT is about 5.7-6.4 depending on vehicle speed and TPS level. In park, at idle, bank 2 LTFT is at 8.1 and bank 1 is at 3.9, but at throttle, both LTFT readings 0 out really fast, then rise up to about 6 at cruise
Vacuum reads about 18-22 at idle and it holds steady for 30 minutes (have not checked it for a longer period) with car running and it off. Need to test injectors on bank 1 for leakage, but don't suspect that. Car starts easy when it is hot and cold.
Would a MAF cleaning alter the LTFT readings? I suspect there is a clog somewhere in bank 1, since the LTFT is lower on that side. I also know that there always has been issues with the Contour getting the P0420 code on the V6 model Contours.
Thursday, September 11th, 2014 AT 7:02 PM