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原帖由: fantasygirl201 ,

标题:

Why do I keep getting a p0171 and p0303

文本:

I have a 2004 Toyota matrix xrs with the 2zz ge

I recently replaced my rear exhaust header gasket to to a prior lean code due to it having a  Secondary Air Injection Pump Check Valve since I did I now have the p0171 and a p0303 3r cylinder misfire.i have done a compression test and a vacuum test both fine, have done coil packs, spark plugs and injectors and tested it all. Also have done every gasket on manafold and throttle have replaced the maf and tps put still getting these codes. The car starts up with rpms about normal but rough, have aslo replaced upstream o2 witch was bad have not done second. It only has 186k new clutch and master and fork ecta I have sprayed brake cleaner everywhere and cannot find a leak.im stressed out .I just wanna drive my car. Please help

设备:

Toyota Matrix

状态:

open