Hi i am a new user

i recently bought ls 460 2008 model

from past few days i am getting code p0172 p0175 which mean banks are rich on fuel

yesterday i got p0104

i found a crack near the intake pipe changed it today but still concerned

Can anyone tell me what are the normal maf and fuel readings

i have attached the place where the crack was

8 readings on ls460

 

Thegamemhb - I read about these codes on some other threads. It seems to follow a theme that when more air that goes into the engine than to which it is originally calibrated, the response is to richen the mixture to try to balance the AFRs.

I think your repair of the air leak should resolve this issue. I wouldn't worry too much about it. Clear the codes, drive a few days and see what happens.

 

thank you for the reply even i am hoping that the code wont return but i noticed something last night

During driving the car if i release my pedal and the speed starts to drop around 20miles the rpm starts fluctuating when it reaches around 1 -0.700 rpm

tommorow i am going to try cleaning the maf sensors and throttle body

 

That's just the transmission shifting down and the rpm adjusting accordingly. With Exhaust Vents, the exhaust can be heard simultaneous to those rpm fluctuations … and it sounds N I C E.

So nothing to worry about.

 

feeling happy after reading your message thank you