have had a stock ls in my ej for 3-4 months now, never a CEL until the past few days its code 43 Fuel supply system, and in all honesty i dont know where to start looking for this problem, you think you guys could help me out . . . .I was thinking maybe a fuel pump or maybe injectors - thanks Jason

 

How is the car runnning? If there are no driveability problems it is most likely your O2 sensor.

 

yea theres not problems at all, idled funny the first 2 months due to a fuel problem and now its fine, should i just swap out the o2 sensor with mine?

 

Ever fix your problem? I'm having the same issues

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KiD Fr0m Da 516 &raquo;</TD></TR><TR><TD CLASS="quote">yea theres not problems at all, idled funny the first 2 months due to a fuel problem and now its fine</TD></TR></TABLE>

What fuel issue made it idle funny? Because my swap is doing the same thing!

 

im having the same code 43 problem swapped O2 sensor and its still there... anyone know what to look at next?

 

up for not wanting to fork out mad cash on o2 sensor to have same problem

 

same happend with my B18B in my EG......think it might be I wired the new O2 wrong or there is a vac leak somewhere.....read in a manual it has to do with fuel pressure/fuel regulator and poss vac leaks....when i change my TB gasket Ill check everything out and let yall know if it went away