Engine Performance problem
2004 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 156000 miles
check engine light blazing had the codes run and came up with a 446 evap system performance code. I replaced the vent valve and reset the computer, the light stayed off several days and came back on again. I have checked for vacum leaks and cannot find oneand its the same code again could the vapor cannister need be replaced, help
have the same problem?
Monday, May 31st, 2010 AT 4:22 PM