Rep Power: 0

Okay guys, i know there are 100s of threads out there about idling problems, but I havent seemed to find a diagnosis for my situation.

My 2000 Civic Si was having some pretty bad idling issues when i got it. Long story short, I bought a brand new IACV, brand new TPS (calibrated correctly), and cleaned out the throttle body. Check engine light went away for about a month and i had no issues.

Today, I had to make a quick stop by my house, i left my car running while i went inside, came back out and could hear that it was idling high. I got in the car and the check engine light is back on, and its idling steadily at about 2 grand.

It is throwing a P0505 Idle Air Control System Malfunction.

I dont even know where to start? Any ideas?

 
Rep Power: 215

Check for vac leaks. and yes, this is a searchable item.

 
Rep Power: 0

This video seems like it would definetly help you

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