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Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

Pulsating Idle?

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Old 04-26-2003, 09:27 AM
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Default Pulsating Idle?

When the car is warmed up the idle starts pulsating from 1000rpms to 2000rpms. I took the throttle body off and replaced the gasket (very cracked & old) and the problem is still there. What could be causing this?
Old 04-26-2003, 09:52 AM
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Default Re: Pulsating Idle? (B16Hatchcx)

I believe that TB has a fast idle valve under it, its possible that it is dirty or the spring inside is broken.
Old 04-26-2003, 09:52 AM
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Default Re: Pulsating Idle? (B16Hatchcx)

i had a similar problem and adjusted the idle adjusting screw.. but i was supposed to do it while some things were unplugged but it still worked.. here's a link on how to do it correctly:

https://honda-tech.com/zerothread?id=486317
Old 04-26-2003, 10:11 AM
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Default Re: Pulsating Idle? (prendi)

just had my fast idle valve replaced....may be that or your IAC
Old 04-26-2003, 11:40 AM
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Default Re: Pulsating Idle? (B16Hatchcx)

Sounds just like my buddy's B16...Bad IAC.
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