NA Motor Discussions regarding N/A KA24E, KA24DE, and SR20DE

idle troubles/rpm crash

Old 01-10-2008, 10:45 PM
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idle troubles/rpm crash

when i leave my car to idle it jumps around all over the map rpm wise. it goes anywhere from 1300rpm down all the way to 400rpm. also when i put in the clutch from anywhere above 3000rpm and let it go down to idle, it often stalls on me.

is this my fuel injectors? spark plugs? vacuum leak?

thanks a lot guys!
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Old 01-11-2008, 12:10 PM
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iacv would be my first guess.
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Old 01-11-2008, 09:48 PM
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Check all vacuum lines also, besides the IACV.
Your stalling issue could just be that you need a tune up, my engine use to stall when I would push down on the brake, and had a bad IACV.

Last edited by BigVinnie; 01-11-2008 at 11:06 PM.
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Old 01-12-2008, 03:21 PM
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it is very possible that the problem is a vacuum leak, although something i've noticed over the years with different cars is that vacuum leaks have caused higher idling that 1300rpms. the vacuum leaks i've encountered have caused an idle of about 2k rpms.

just something i've noticed.

i second the tune up or at least check the dist cap and o ring for damage.
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