Having idling problem with my B18C1 Engine
 

What's up everyone!

I have a 2000 Honda civic SI and I just recently upgraded my B16 to a B18, but since then I have had very bad idling problems ranging from 1000 to 3000 rpm's. Can anyone help me out on this?

Re: Having idling problem with my B18C1 Engine
 

Is the CEL ON?

Have you checked for vacuum/intake air leak or cleaned the IACV? Is the throttle cable adjusted too tightly?

Re: Having idling problem with my B18C1 Engine
 

X2

Re: Having idling problem with my B18C1 Engine
 

Sorry for sounding like a newb, but what's the CEL? The Iacv is clean, however I think it may have something to do with my cable because my pedal sticks a little bit when I drive.

Re: Having idling problem with my B18C1 Engine
 

check for vacuum leaks as Ron stated. Make sure there are no open ports on the manifold, I had a bad dile problem and there was a open line on the back side of my IM. As soon as it was plugged, BAM idle was perfect. And yea your throttle cable should seem awefully loose. Too tight can cause a leak.

Re: Having idling problem with my B18C1 Engine
 

CEL = check engine light
Click here for more details.

The throttle cable should have 3/8" to 1/2" of free play.

Re: Having idling problem with my B18C1 Engine
 

Sometimes my engine light comes on, but then I when I take it to the shop my friends shop he sprays brake cleaner to check for leaks and the idling stops, but only for a couple of hours.

Re: Having idling problem with my B18C1 Engine
 

Sounds like a vacuum or intake air leak. Pull the CEL code(s) from the ECU.

Re: Having idling problem with my B18C1 Engine
 

if your pedal is sticking and your cable is at the right tension, then check the stopper on your throttle body, it may be screwed up too high...

Re: Having idling problem with my B18C1 Engine
 

***update*** 6/19

Just got another check engine light and the system is giving me the following errors:

P0171B Bank 1 system too lean
P0170 Fuel trim bank 1

This sounds like a vaccum leak. what do you guys think?