Hondata

Well I have both common idle problems and have no idea what to do to fix it. When I rev the car and let off the gas the rpms will sometimes hold at 1500 then bleed down to either my idle (850 rpm) or fall down to about 300 rpm. When it climbs back up, the rpm will either go to 850 rpm or go up to like 1200 rpm then fall down to 850 rpm. I have pulled the TB off, removed the IAC sensor and cleaned the valve. I have messed with the IAC slider, I've tried the Honda Idle learn process. Any other ideas?
-joe

with the iac unplugged what is the idle?

Should I do this with the car warmed up or cold?

warm

Ok, after allowing the car to warm up and letting the idle stabilize at 850rpm I unplugged the IAC Valve plug. The RPMs immediately began to pulsate from 1550 rpm to about 1850 rpm. Just a constant up and down, up and down fairly quickly. What now?

Was just about to post up with the same problems. My euro JRSC ctr seems to have idle problems too. When sitting stationary and blip the throttle, the revs climb but fall down to almost stalling, sometimes it cuts out completely. Also happens when i start to slow down and bring the car to a standstill. I ve had the idle fuel duty adjusted by the dealer, but it still seems to happen.

Any ideas to what it could be???

Set the idle per the Helms manual.

Ok will do when I get the time and I will post back! Thanks.

Well I started reading through the Helms manual and I couldn't find anything about setting the idle. The only thing I keep finding is that damn engine idle learning procedure. Where you hold the revs at 3000rpm then let it sit.. blah etc..etc.. Any help on exactly what you're talking about would be awesome. It seems like this happens to only the EP3 guys that are supercharged. Could the problem somewhere lie in a small leak from the PCV valve hose ran to the supercharger inlet?

See http://www.hondata.net/forum/viewtopic.php?t=4044