Slow&Delirious
isn't fast or furious
I recently did a tune up on my D15B, everything is Factory except for a short ram intake. I changed plugs, wires, and the fuel pressure regulator all with OEM parts from the local AutoZone. I also just installed a 4-2-1 header when i did all this. Now i am getting a Code 43 after a few min of driving. I have done my research and code 43 is a Fuel supply system fault. Meaning im too rich or too lean or perhaps a fault in the H02 sensor. Google was not much help with a code 43.
The only thing i can think of is when i first installed the header i put the H02 sensor in the hole in #1 cylinder header pipe because the wiring wouldnt reach to the second hole down where all the pipes collect before it reaches the Cat. It makes more sense for the 02 sensor to read all the cylinders rather than just #1 so after getting the code a few days in a row i extended the wires and put the sensor futher down stream right before the cat but it had no effect on the CEL comming back the next day
any input would be helpful. i dont know if i need a new O2 sensor or perhaps the autozone FPR was bad. But the plugs are gapped correctly and it idles and runs fine with plenty of power
The only thing i can think of is when i first installed the header i put the H02 sensor in the hole in #1 cylinder header pipe because the wiring wouldnt reach to the second hole down where all the pipes collect before it reaches the Cat. It makes more sense for the 02 sensor to read all the cylinders rather than just #1 so after getting the code a few days in a row i extended the wires and put the sensor futher down stream right before the cat but it had no effect on the CEL comming back the next day
any input would be helpful. i dont know if i need a new O2 sensor or perhaps the autozone FPR was bad. But the plugs are gapped correctly and it idles and runs fine with plenty of power