h23 im swap help

[djscoonf22A6]

i have a f22a6 i swap the im for a h23a1 im after the swap when i start the car
it idle at 2 then goes up to 3 and stay there i check all the hoes some one help any one

['93CB7Ex]

sounds like you might have a vacuum leak.

[thepowderblue]

i have a f22a6 i swap the im for a h23a1 im after the swap when i start the car
it idle at 2 then goes up to 3 and stay there i check all the hoes some one help any one

You need to let it worm up and let the computer get to know the new intake.then if it still does it set the idel. Check your iacv

[djscoonf22A6]

so i should let it sit

[thepowderblue]

Sit and run

[92smokeaccord]

did you refill the coolent after the swap.honda notorious for revs like that with little to no coolent.also check the fast idol valve.tighten the valve inside down

[pedroalcala]

Make sure that you have a good IACV and FITV...could also be the MAP...is the vacuum hose connected to a vacuum nipple? also, did you ever change the gaskets since you swapped manifolds?
the ECU has nothing to do with the upgraded manifold....you only need a reset...disconnect neg- battery and plug back in after 1min then start car...

[thepowderblue]

I had to have a nipple made for my map sensor

[djscoonf22A6]

I had to have a nipple made for my map sensor

how did u do that

[djscoonf22A6]

now the rpm goes up and down then the car cuts off

[thepowderblue]

Ill post pix tomorow. Its was made on a mill out of aluminum. Where the map sensor bolts on the top of the h23 tp you need to get a nipple in it or on it somehow and connect it to the vacucm like going to the black box.

[Losiracer2]

Ill post pix tomorow. Its was made on a mill out of aluminum. Where the map sensor bolts on the top of the h23 tp you need to get a nipple in it or on it somehow and connect it to the vacucm like going to the black box.

thats because you have an OBD2 throttle body and thats from a JDM engine. Stop confusing the newbs! they don't need to weld anything or modify anything on the TB.

If you get all the stuff off an US H23 IM you should be fine.

Make sure you have checked and double checked all the vacuum lines going to the plenum. And also, you definitely need new gaskets for good measure. They can cause vacuum leaks if reused.

[djscoonf22A6]

ok