Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

no fast idle

Old 02-Aug-2005, 09:14 AM
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no fast idle

in the mornings or after hours of not driving (when motor is cold) my car doesn't go into fast idle mode..... i hafta keep my foot on the gas for a good 5min to warm up the car or else the car will just die on me..... when motor is warm though it idles normal.. i've changed both iac and eac valves and still have the same problem..... gotta a 92 civic si hb w/ b18b motor.... never had this problem before..

hope someone can help

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Old 02-Aug-2005, 09:59 AM
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You need to replace your FAST IDLE VALVE. It provides the extra air needed based on coolant temp. So when the car is cold, it opens up.
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Old 02-Aug-2005, 01:01 PM
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check under your throttle body that is where my fast idle vavle was (B16A1)...
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Old 02-Aug-2005, 01:43 PM
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If it's a B18b motor, it will be electronically controlled by the IACV (Idle Air Control Valve).

If the sensor was unplugged you would get no fast idle - but you would also get a Check Engine Light on the dash (Asuming it's correctly hooked up).
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Old 02-Aug-2005, 06:36 PM
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i didn't get a engine light... and i already replaced the fast idle valve and still didn't work
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