00 Civic stumbling on acceleration
Senior Member
Joined: Oct 2006
Posts: 1,335
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I unplugged the IAC and nothing happened to the idle speed. According to the manual I have, it should dropand the engine should almost stall.
I tried to get at the PCV valve, but I couldn't get it from on top and I don't feel like getting everything out to jack up the car. I might try it later.
I tried to get at the PCV valve, but I couldn't get it from on top and I don't feel like getting everything out to jack up the car. I might try it later.
Senior Member
Joined: Oct 2006
Posts: 1,335
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Thread Starter
Junior Member
Joined: Feb 2006
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Thanks for the link, I wish I had that a few days ago. I already took off the IACV and cleaned it. The screen was completely black with deposits, so I cleaned it really well with carb cleaner but it didn't help. Right now, the idle speed is set way up and it's sucking in a ton of air but it only idles at about 600 rpm. When I turn of the car it continues to suck in air loudly for a few seconds. If I turn the idle adjustment back to where it should be the car dies.
I also noticed that when I have the AC on the rpms don't go up to compensate and the idle gets really low.
I also noticed that when I have the AC on the rpms don't go up to compensate and the idle gets really low.
Senior Member
Joined: Oct 2006
Posts: 1,335
Likes: 1
Ya I think we have a bad IAC. To set idle unplug the iac and mess with the air bleed screw till you hit about 600-700 rpm. Plug back in the IAC and it should jump up to 800-900. Also clear the code.
You may also have a vac leak spray break clean all over the intake and vac hoses. Lets say you spray a vac hose and the rpm jumps up that hose is leaking (it sucks in the brake clean and burns it bumping up the idle).
You may also have a vac leak spray break clean all over the intake and vac hoses. Lets say you spray a vac hose and the rpm jumps up that hose is leaking (it sucks in the brake clean and burns it bumping up the idle).