I have a 93 civic, that has a B16 engine swap. When ever I start the car to warm it up, it idles up to 4,000 rpms, after a minute it calms down. Then it starts ideling up and down really bad. Once the car is warmed up. It idels between 1,000 and 2,5000 rpms, but it only does this when i come to a stop. Another issue that im having is when im driving it, and i let off the gas or push on the gas just a little bit, the car is really jerky, it does it worse in my lower gears. Im sorry its kinda hard for me to explain, hopefully maybe someone will understand what im tryin to say. Ive tried a new idle air control valve, tps sensor, and map sensor, and no success. Im getting very frustrated. I dont have alot of money right now to dish out. So I was hopeing this was a problem that I could fix myself! Thanks for any help or advise that anyone might have!

 

have you try the fitv( fast idle thermo valve)?...

https://honda-tech.com/zerothread?id=1003988

 

I have not tried that yet... Im about too, so I guess ill see what happens

 

Anyone else have any suggestions!