nathanjohnson2009

ok so i pulled a failed h swap out of my car and put my old d116z6 back in the car cause i bought turboed 240...so after i get the motor back in to daily i filled up the gas tank and put just over 10 gallons in it...i ran out of gas at only 114 miles so im getting like 10.5 mpgs...would o2 shutting off cause i hit bumps and it wiggles wires loose(causing code 43) occasionally be the culprit behind this issue. or is it something else

MR.johnson

what ecu. whats the base fuel pressure?

nathanjohnson2009

its bck to stock p28 and i believe my gauge says between 30-35 psi at idle

v8killaz

weird
well the o2 shouldnt cause that i run no o2 and it runs great if not better.

get the o2 fixed or clear the codes and see if it returns, could be somethign mechanical
ur runnign a p28 right

nathanjohnson2009

yes i got the p28 i clear the code. every once in a while it comes unplugged and the code comes on

Former User

Your gas mileage will suffer if the O2 sensor is not working, so first solve the O2 sensor or wiring problem.

ek419423

code 43 is fuel supply system

Former User

Code 43 generally indicates a problem with the O2 sensor when there is no accompanying performance problems.