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i have p0131 code: running lean
i cannot determine if it is vacuum leak or lack of fuel.
how can i determine this based off driving symptoms and a obdii scanner readings?
how should the truck drive / how should the computer read at lets say:
idle, 750rpm, nuetral
vs
3000rpm at 4th gear, 45mph?
my computer reads:
engine rpm
fuel trim%
maf (g/s?)
load% (what is this?)
i cant find a vacuum leak,
the car runs fine, i havent noticed any unusual behavior
ive swapped maf sensor, iac valves and upstream o2 sensor,
cel stays on
xxx
do i need to manually clear the code? ive only been disconnecting the battery to check if it will stay off
