Not Ranked
Fuel trim is the reading thru the pcm/ecm for the % of air-to-fuel. In diag terms, it can tell you if the O2 sensors are working, and if they are 'lazy', which can cause driveability problems and trigger a mil. Can also help find contaminated MAF, dirty intake, leaking injectors or a ecm fault.
__________________
"I think we have more machinery of government than is necessary, too many parasites living on the labor of the industrious." Thomas Jefferson
|