ok so i did this today and when i first started my car it had a really hard time starting about 3 seconds to finally start up. then it idled around 2k then gradually went up to 3k?? is t his normal and now wen i put it to neutral to stand by my car rattles and drops kinda close to like around 5 close to the 0 rpm so when i put it to first it kinda rattles again. idk i think i just messed it all up.

 

A slight air bubble in your cooling system could drastically affect your idle. I'd try bleeding (or rebleeding) your system.

 

GL man

 

Did you clean your iacv you mean?
Did you tighten the bolts back all the way along with the gaskets that may of fallen off of it?
Try starting your car when cold with the radiator cap off and squeeze out any air bubbles

 

if its irratic idel most likely the tps sensor/

 

ok so this morning i plugged one of the hoses that i took off, i seriously thought i put it back on but now its all good. i think i didnt see the an o ring so ill try and check again tomorrow to see if its not there ill buy one from honda