Engine Performance problem
1999 Chevy Silverado V8 Four Wheel Drive Automatic 89900 miles
I have ben getting code po404. I have erased it many times. I thought it was because I have a bad fuel sending unit. I am now getting code po405 egr valve position sensor A- low circuit. I have put in a new egr valve 1000 miles ago. I pulled out the egr and tried to clean it when I was getting code po404. Any thoughts?
have the same problem?
Thursday, March 25th, 2010 AT 5:22 PM