Z32 Fuel pump/controler going bad?
Posted: Tue Dec 24, 2013 11:47 pm
Some days ago my car have start to make +12 AFR on WOT
it was running fine at 11.5 AFR in WOT and i log the nistune and the target AFR is around 11.3, also log some runs and all the other sensors( MAF etc) are fine.
Injectors, fuel filter, fuel regulator is new.
The fuel pump/controler and damper are stock whit around 93k miles
On cruise it runs fine around 15 AFR,
On part part throttle also runs fine around 13s
The TT fuel pump controler are 3 speed flow, is it possible the controler is bad only when it need max flow? or is the fuel pump that is dying?
in my older logs when the AFR was around 11.5 the injector time (green line) always keep up whit rpm/maf
And now when it needs more fuel it can´t keep up and the injection time falls
it was running fine at 11.5 AFR in WOT and i log the nistune and the target AFR is around 11.3, also log some runs and all the other sensors( MAF etc) are fine.
Injectors, fuel filter, fuel regulator is new.
The fuel pump/controler and damper are stock whit around 93k miles
On cruise it runs fine around 15 AFR,
On part part throttle also runs fine around 13s
The TT fuel pump controler are 3 speed flow, is it possible the controler is bad only when it need max flow? or is the fuel pump that is dying?
in my older logs when the AFR was around 11.5 the injector time (green line) always keep up whit rpm/maf
And now when it needs more fuel it can´t keep up and the injection time falls