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Old 02-18-2011, 08:31 PM   #1 (permalink)
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Question on FITV on Civic

Anybody know if a Civic D15Z1 has a Fast Idle Thermo Valve. My manual doesn't show one but I've read that it does.

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Old 02-19-2011, 12:16 AM   #2 (permalink)
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Is this the valve that bypasses the throttle body to speed up the idle? if so, no it does not have one, at least not that I've ever seen on the parts list, nor when I took my throttle body off a few years back to replace it.
what issue are you having?
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Old 02-19-2011, 12:24 PM   #3 (permalink)
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I can agree and confirm, the D15Z1 does not have a FITV (Fast Idle Thermal Valve) it only has the IACV (Intake Air Control Valve).
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Old 02-19-2011, 03:11 PM   #4 (permalink)
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I'm just doing alot of reading so I can eventually rebuild my VX. It has 412K miles I put on it and still is in pretty good shape. I bought a Fit and figure I can lay it (VX) up for awhile to rebuild it. This site has been invaluable for giving info. I've learned I have been putting the wrong plugs in on the tune ups. I have the wrong tires P175's. This car has been the best I've ever had and saved me a ton of money on fuel. Last I checked I was getting 40 to 45 mpg. I'm not a mechanic but I enjoy working on it. Hope to get it back to 50 mpg or more. When I first purchased it I thought I was getting close to 60. I have not modified anything and changed oil regularly. I did replace the distributor, gas tank, and the normal wear and tear stuff like brake shoes.

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