stalling-evap codes
#1
stalling-evap codes
new here and looking for help. 2000 bonneville se will stall when coming to stop sign or letting off for a sharp corner. recently had it sitting in yard and rev it slightly and let off engine would rev up and down several times then stall. the part that baffles me is that it does this more often the fuller the fuel tank is. with tank close to empty it does not stall at all -full it will stall 10 times in 15 miles. codes came up po141-po300-po440-po452 i think the po300 is from the stalling as it runs fine otherwise. the 440 & 452 are evap but have no clue where to find them[ used to be a canister but have nothing that looks like old school] have tapped on the maf sensor when running but no change in the running. help will be appreciated more than you know
#5
Senior Member
True Car Nut
#7
Senior Member
True Car Nut
#9
stalling & evap codes
worked at chasing down vacumn leak sprying carb cleaner on lines and componets of anything with vacumn but no change in rpm or running. cleared codes and drove to town ran good came home and checked codes a 452 had reset itself evap emission control pressure sensor low input is this from a bad purge solenoid? couldthe stalling come from a bad map or maf sensor without setting a code? baffles me that stalling occurs more often the fuller the fuel tank. a map sensor makes some sense as it senses the manifold pressure when dropping to idle. any other suggestions will help