200+hp240sx

just bought this supercharged delsol and its a blast to drive and I was going to make this my daily but I have to sell. Car is great mechanically except for one flaw and that is when the car is first turned on it revs from 1k to 2k back and forth for a while, when you drive it for a lil bit it gets less and less and then it stops and the car then idles perfectly fine. idle air control valve? not sure what the exact problem is and I am not sure if the supercharger is the culprit or what. I really want to fix what I can on this car for the next owner. I always get good advice here from members so thanks in advance

Henryx33

Thats normal when you first turn on the car and its cold. Its just warming itself up. When it gets to a certain degree it begins to drop in RPM. Almost all hondas do it.

200+hp240sx

I should of specified, its when the car hasnt been running period it does it, does it every start up. I have owned a lot of hondas and a few of them had a hard start up initially and would crank up to 1500 rpm or so but would work its way down right away. My del sol is reving back and forth constantly from 1k to 2k until I drive the car for about 10 minutes

VB2NER

tighten the fitv...

200+hp240sx

intake throttle valve? not sure what the fitv is

VB2NER

take your intake off and you will see a small hole in the manifold. Put your finger on the hole, if it starts idling correctly, then chances are that is the problem. if i had a camera i would take pics, but pm me if you want some help. I had the same problem recently and slowls helped me fix it.

200+hp240sx

thanks, I will try this when I get home, and yes, John knows his stuff.