So you've blocked the charcoal canister breather, one from the head, one to the brake servo and it idles ok, until you blip the throttle?
Check the plastic inlet isn't leaking (it's in two halves). Useful if you know someone who vapes and can assist!
Idle is/can be controlled by a few things, not just the ICV and they sort of work in unison, I've found. If one is faulty, it can be a bit of a pain to try and eliminate. However, you've cleaned the ICV - I wouldn't rule it out, that it is duff.
Disconnect the ICV wiring plug. The ECU should then use TPS and Map to control idle (I think, been a while). It might not be 100% but possibly better. This could rule in/out the ICV itself.
Also reading live data can tell you what is going on. You can see the ICV cycles/map values/throttle angle and find out which one is fluctuating enough to increase idle. Otherwise, I'd just be unplugging each one in turn (ICV, TPS, map) to see what happens. Obviously after you've ruled out any air leaks.
Failing all of that, sell it. They are worth silly money these days.
|