ok i bought a aftermarket intake manifold for my d16z6 when i went to put it on i realized it was the wrong one, so i put my stock one back on and now my car idles around 2500 and every 3 or 4 sec it drops back down to about 1500. does anywhone know what that might be and what i would have to do to fix it.
thank you

 

did you put a new gasket on the t/b and intake manifold if not it will definatly do that

 

you need one from t/b to i/m and i/m to head

 

i put a new one on from the intake manifold to the head, but the one from the throddle body wasnt broken so i left it on. should i change the one on the throddle body

 

ok i changed the gasket on the throddle body and it dident work if any whone else might know what it might be i would great
thank you

 

make sure all the water and vacuum lines are right

 

yes and check pvc valve,map sensor and any other vacume lines

 

Sounds like the TPS sensor or the idel air control valve... maybe?

 

Also make sure the TB gasket isn't upside down, I put mine on upside down once and it did the same thing. Also when applying the gasket put a lite coat of oil on it to prevent it from sticking to the TB or the head incase you have to remove it again.

Kris