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P0037, p0031, p0032,p0131,p0134

566 Views 20 Replies 6 Participants Last post by  shipo
I don't understand what's going on. I replaced the upstream 2x already. Took old one in saying the had a manufacturer defect got 2 new ones. Got a new maf. I cleaned battery post, grounds redid my wiring. Clean air filter, fixed exhaust leaks. New spark plugs gapped to .52... I don't understand what's going on.

My car says it is federal emissions but the car is rigged for California. And I only have 2 sensors not three. 2006 Mazda 3 2.3 manual.. has anyone has this issue before?
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I talked to the shop and told them what's going on so they are gonna be checking wiring all the way to pcm. Etc.they say it's gonna take them 1.5hrs totally diagnosis it. I don't get it in till the 30th. I'll update what they say then.
Yes, this is a god move. I hope they do a good job and are competent. I really do think you have something that is hacked up. This analysis is needed to get a baseline of what you have.
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