hello all,
I have been following this thread for a while now. I have a 2003 V8 that has been guzzling fuel like bad, the best I have seen on it is 11.4mpg. Other than that the vehicle seem stuck in L4 any attempt to put it in H4 is met with whinning and annoying endless beeps, I have followed all the advice and instructions and my case seems to be the reverse of what others have experienced (being in H4 and having difficulty engaging L4).
Lastly, I normally drive maximum of 35 mph and strange enough this will be pushing the rpm towards 1800; and I have read that people get 60mph at about 1700rpm. The vehicle runs great, I scanned it, no code in the module, I did decarbonization and cleaned the nozzles at the service center, changed the air filter. I dont know where the O2 sensors are, so I have not touched that.
Please I need help urgently before I go bankrupt because of cost of fuel.
Much thanks