Just like the title says. Has anyone aver had a bad afm, and didnt get an engine code? While the car is running, i tried unplugging the afm and didnt not get a drastic change in how it ran&idle, but im not getting any afm codes.
If I were you, Id try to borrow one from a friend or something, check it out. Also, check all the wiring to and from the AFM. My car was running like shit even after I replaced the dead AFM, turns out I wasnt gettin the AFM signal to the ECU. HTH.
I had three AFMs go out over the course of a few months and only twice did I get any codes. Once was code 24 and once was 31. I found that the code went off only about half the time. But the car had horrible idle problems as well as driving issues even though I had no codes. Replaced AFM problem gone.