Engine Performance problem
2002 Chevy Blazer 6 cyl Four Wheel Drive Automatic 60000 miles
new vehicle to me. I put new cat @ muffler, plugs-wires-cap @ roter, fuel filter, cleaned throttle body, and I was told it had a new fuel pump, it looks fairly new, the filter was really pluged, and vehicle performed the same. Fuel pressure on rail is 52 psi with eng running-55psi with vac applied by hitting throttle, I put gague on filter with eng off, cycled key and rt was 58psi at best. Is fuel pressure ok? I got 3 02 codes-po131-po137-po151-the 02's look like the switching is good until you hard acell, then all 3 02's go to real low readings and stay there, fuel pump? I do not know what it should be. HELP. Thank's.
have the same problem?
Sunday, August 1st, 2010 AT 7:14 PM