Hello,

I just recently installed a makeshift catch can and bypassed the throttle body coolant and now the car idles at 900 rpm.

I purchased an inline all purpose filter from Lowes. Initially, there was an air leak from the bottom of the catch can bowl so I added silicon to close off the air leak. The idle was reduced,close to stock, and the CEL went away. But the idle still stays around 900 rpm. I performed the throttle body reset procedures and do not see any change. I am certain the direction the filter is installed is correct. What could be the issue? Is this normal with the catch can install? I would like to hear your opinions. Thank you.

 

of course it's not normal.

Pictures and/or diagram of how you installed it might be helpful.

Did you disconnect battery when working on/near the throttle body? Did you touch the throttle plate at any time?

 

Yes I disconnected the battery when I performed this mod and I did touch the throttle plate. I performed the TB relearn procedure. I will post pics later today. Thank you for the reply. I will try the relearn again and check for vacuum leaks.

 

In some cases, the re-learn doesn't work or it works and doesn't keep. If possible, leave battery disconnected 12-24 hours then try the relearn once you reconnect the battery.

 

Yeah, mine learns, but won't remember it, i've seen reference to just disconnecting the TB for 24 hrs to fix this, not tried it yet.