i have a87 bmw 325 i recently purchased and was told the barometric pressure sensor is bad how would i know if it is and if it is how to replace and any other things it might effect that might need replaced thanks for the help
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87 bmw 325 barometric pressure sensor
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Your car doesn't have a barometric pressure sensor, or MAP sensor. You have an airflow meter (AFM). If it's bad, unplug the AFM, unclip the top half of the airbox and loosen the big hose clamp holding the intake boot to the AFM. Remove the four nuts inside the top half of the airbox and the AFM will come out. Installation is, as always, reverse of removal.
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Actually, some e30s do have a barometric pressure sensor. It is a small module mounted to the side of the airbox on some of the earlier cars. I've tried unplugging it and everything else to try to figure out what it does, but nothing changed. I wouldn't worry about it at all. That is, assuming that you are talking about the same thing I'm thinking of, heh.
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