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    Code 24... fixed it and now all of a sudden code 31?

    I did not try to clean it. I got my replacement off a salvage 93 Sc. I will try to find a turbo Supra one. If anyone else has had a problems with an early 90s Lexus afm any help would be appreciated. Also any aftermarket AFMs people have experimented with.
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    Code 24... fixed it and now all of a sudden code 31?

    My worry is that the new used part immediately got shot.. really making me want to go map. Wouldn't make sense for it to be a wiring problem if it just started working all of a sudden. edit: I reset the ecu again and now I'm getting 51. Is this an ecu problem?
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    Code 24... fixed it and now all of a sudden code 31?

    So I had what I thought was a bad AFM, ordered a lexus afm which I just put in today. After resetting the ecu, no codes and the car ran like good. I took it for about a 5 minute test drive and everything seemed normal. I was in my driveway with the car idling scrolling through my s-afc readings...