Question about 1991 Honda Civic
Well that noise you hear is normal. on your stock intake it muffles the sound and on your after market one it dont the sound you are hearing is from the (IAC) idle air control. if you look an your throttle boddy you will see a big set screw should be next to the line that runs next to your e-vap if you tighten that screw the sound will quit down if you loosen it will get louder but if you change that screw it will change your idle
Posted on Nov 15, 2008
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Posted on Jan 02, 2017
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