Wethy
Member
Good day folks.
Been dealing with an intermittent p0303 code. 2014 wrangler. Background. Been getting this code lately. ive been trying to sort it out. Ive checked plugs and coil packs as well. I did replace all plugs as it was nearing time to do that anyways.
But i was also getting a bank 1 post cat fuel rich code as well. Checked the injecters on bank 1 and they seemed okay. Replaced the cyl3 injector to be safe(may replace the other 2 as well)
It is driving fine but rough at idle. And since replacing the plugs it has gotten better. But still idles a bit rough.
Ill be doing a compression test in the next few days and maybe a leak down test also but im really curious if a bad/failing o2 sensor could cause a misfire(maybe due to the fuel too rich code)
Any other input would be appreciated as what to check. I cant check the timing chain without pulling the valve cover, and it may still come to that.
Ive also attached a image of the codes that come up.
Been dealing with an intermittent p0303 code. 2014 wrangler. Background. Been getting this code lately. ive been trying to sort it out. Ive checked plugs and coil packs as well. I did replace all plugs as it was nearing time to do that anyways.
But i was also getting a bank 1 post cat fuel rich code as well. Checked the injecters on bank 1 and they seemed okay. Replaced the cyl3 injector to be safe(may replace the other 2 as well)
It is driving fine but rough at idle. And since replacing the plugs it has gotten better. But still idles a bit rough.
Ill be doing a compression test in the next few days and maybe a leak down test also but im really curious if a bad/failing o2 sensor could cause a misfire(maybe due to the fuel too rich code)
Any other input would be appreciated as what to check. I cant check the timing chain without pulling the valve cover, and it may still come to that.
Ive also attached a image of the codes that come up.
