Recent content by t.mcginley.jr

The fuel filter and spark plugs were replaced just because it's at 185k miles. The upstream O2 was replaced because it wasn't reading correctly. The fuel pump and injectors were replaced because I thought they might be the problem, apparently not though. I'm just running out of...

Hi everyone, I just finished rebuilding my 01 Corolla's 1zz-fe engine and I'm having some problems. It started with misfire error codes: P0300, P0302, P0304. Replaced the upstream O2 sensor with an OEM Denso one and it took care of it. However, the fuel trims were always high. Only maybe...