Iacv???
 

Hey azht having trouble with my dd, just noticed this but when I cruise rims surge also it sometimes roaming idles in cold start. Bought both iac and fast idle valve but still no results. It's a b20 with all b18 original parts including ECM wondering if you guys could point me to the right direction... Any help would be much appreciated :lame:

There's a bad vacuum inside the throttle body hole on top is the culprit, when I plug it up it goes straight to 600 rpms which that were it should be at idle...

Gotta screw in the fast idle valve.
Under neath the throttle body youll see a golden plate on the backside
Take the plate off and screw in the valve.

Put back together and fire it up and report back.

Screwed in the fast idle valve and it goes to 1500 then it goes into roaming, when I cover the throttle body holes BOTH of them the engine doesn't die then I hear another leak near the brake booster is there a diagram that I can look up?

Swing by ill help u out

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