M mig360mBJ : Protege BH with BJ engine Jan 13, 2020 #1 long term fuel trim negative at idle -14.8. is the bad or good?
S Steezy03GT : 2002 mazda protege5 Jan 15, 2020 #2 Long term fuel trims being negative means that the car is cutting back fuel, because the o2 is reading that you're running rich.
Long term fuel trims being negative means that the car is cutting back fuel, because the o2 is reading that you're running rich.
M mig360mBJ : Protege BH with BJ engine Jan 24, 2020 #3 Steezy03GT said: Long term fuel trims being negative means that the car is cutting back fuel, because the o2 is reading that you're running rich. Click to expand... thanks
Steezy03GT said: Long term fuel trims being negative means that the car is cutting back fuel, because the o2 is reading that you're running rich. Click to expand... thanks
