Hello all,

I've been chasing this code for 3 weeks now and I'm just running in circles .

I got my Long term fuel trim consult running at -25% at all time .
I changed fuel injectors , fuel pressure regulator (the one next to injectors ) , new MAF sensor, air filter , new PCV valve, new O2 sensor and still have long term fuel trim at -25. % I just don't know what else could be causing it to run rich .

Can some one please help .

Thank you .

 

I also have the same issue, idles rough when cold or deceleration, running rich with LTFT -25. I also changed everything you mentioned plus spark plugs with wires, fuel filter, fuel pump, idle air control even as fair as PCM. No luck. You won't happen to know the range of MAF g/s at idle ?? OBDll scanner suggests MAF fix maybe I got a bad sensor. You learn anything new???