How to tell if maf is bad?

Discuss topics related to the CA18DE and CA18DET series engines.
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Sideways s12
Posts: 639
Joined: Sat Mar 03, 2007 4:58 pm
Car: 84 turbo s12
Location: Las Vegas

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I need to know how I can tell if my maf is bad I had it unplug and the car idled smoother than usual as soon as i plugged it back in the horrible idle came back is this normal Im currently trying to work out some other issues so ruling this one out will be great thanks!

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boost_boy
Posts: 7051
Joined: Thu Nov 14, 2002 7:28 am
Car: B12 sentra w/built CA18DET, B12 sentra w/fully-built CA18DET, S13 coupe w/ CA18DET, S13 hatch w/CA18DET, 2002 maxima SE
Location: Miami, FL.
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Sideways s12 wrote:I need to know how I can tell if my maf is bad I had it unplug and the car idled smoother than usual as soon as i plugged it back in the horrible idle came back is this normal Im currently trying to work out some other issues so ruling this one out will be great thanks!
Connect a voltmeter to the output of the AFM plug, measure the voltage of the AFM with engine not running (let us know what you find), then blow through the afm (with the engine not running) and let us know what you find. Do this and I can better advise you. Or better yet, you know how to catch me when ready. ;)
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