Rep Power: 0

I cant get the idle to drop, i have tried to adjust it but it still idles the same. Idk what it is. I just bought the car thinking I could fix it. but it has become a headache. THe guy before me swapped the engine for the B16a SIR2. So if you could kindly tell me how to fix that, that would be awesome.

 
Rep Power: 518

HUGE vacuum leak? Manifold mismatch? Throttle can't fully close?

 
Rep Power: 0

throttle is closing and I dont know too much about vacuum lines. I hope its not a Manifold mismatch.

 
Rep Power: 518

A mismatch could leave large gaps. That would be a vacuum leak.

I'm just guessing at reasons why the idle is too high.

 
Rep Power: 0

The guy i bought it from was an idiot so im not suprised

 
Rep Power: 0

Ive noticed that when I get it up to temperature it slowly drops RPM but once i but it in gear, it goes back up to 4k when I pop it in neutral again

 
Rep Power: 518

I can see 2000-2500 for a cold fast idle. MAYBE 3k if really cold. (I did NOT look up any specs, that's a SWAG.)
Idle RPM should drop as the engine coolant comes up toward operating temperature.

After warmup, If the throttle plate was truly closed (and the TPS reads appropriately) and the idle speed is STILL too high-- the engine should be surging 1200-2000 repeatedly, not running at a steady 4k. This makes me think the throttle may not be shut (as indicated by the TPS voltage to the computer).

Is it able to reach full operating temperature?
Is the throttle truly shut all the way? (Does the TPS voltage read damn close to 0.49v when backprobed at the engine harness?)
Is the IAC (and FICV if equipped) sufficiently hot with engine coolant?
Can you tell if one is stuck open?
(Check this post: https://www.civicforums.com/forums/2...ml#post4626806 )

Do you know various methods for checking for vacuum leaks?
(Check this post, the video is great LOL... https://www.civicforums.com/forums/p...19-post15.html )




Has this engine EVER run correctly since installed in this car?
How does it drive?
MAP and TPS wire plugs not swapped?

 
Rep Power: 0

Im going to take a look at it tomorrow , Ill check again and make sure the throttle is closing all the way. It was never reaching running temp till about a week after I bought it. When it doesn't reach Idle temp. The whole time before it does it just sits at 4k

 
Rep Power: 0

I put my fingers over one hole inside the throttle body and it dropped to 1k so Its gotta be one of those sensors

 
Rep Power: 518

You're gaining.
See where that passage leads to, and see what sort of valve there is at the end of it. (There are a few variations, I have no idea what your engine has on it.)
Does that valve get HOT with coolant? (assuming there are coolant hoses attached to it.)

 
Rep Power: 0

It either leads to the TPS or the ICV

 
Rep Power: 0

I can hear the ICV humming after i turn the car off and i think its getting hot from what I can tell and yeah it has coolant running through it