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I have a 2004 Civic LX wit short ram intake... my problem is when driving, go to aplly the clutch, and if i let the revs drop all the way to zero, the car stalls out. At times, if I let the clutch out in to a lower gear, the car will come back on!!(wtf) It doesn't do this everytime, but consistantly enough where I know there's a problem. I have a CEL so i know there is senor involved. Been told it could be a bad sensor..along with the possibility of a bad IACV... I've taken it to Advance auto to see what code it throws but it keeps passing with no codes!!! Any possible help will be very helpful!!!