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 a mile on the rebuild, I've now replaced the fuel injectors, pump, filter (strainer and actual filter), new OEM irridium plugs, etc. and the long-term fuel trim is still at 23% and goes up to 30% sometimes.
Check for vacuum leaks and didn't find any or hear anything, and hooked up a vacuum gauge and it pulls about 22 lbs of vacuum. Hooked up the scanner and the MAF sensor reads 0.3 lb/min which is normal (cleaned it anyway).
Here's a video of the engine running, mostly recorded for the audio:
https://www.dropbox.com/s/ioax0hsg3zi098c/VID_20140613_074144_397.mp4
Any ideas on what else to check??
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 a mile on the rebuild, I've now replaced the fuel injectors, pump, filter (strainer and actual filter), new OEM irridium plugs, etc. and the long-term fuel trim is still at 23% and goes up to 30% sometimes.
Check for vacuum leaks and didn't find any or hear anything, and hooked up a vacuum gauge and it pulls about 22 lbs of vacuum. Hooked up the scanner and the MAF sensor reads 0.3 lb/min which is normal (cleaned it anyway).
Here's a video of the engine running, mostly recorded for the audio:
https://www.dropbox.com/s/ioax0hsg3zi098c/VID_20140613_074144_397.mp4
Any ideas on what else to check??