I have a jdm b18c with just bolts on mods, no internal or anything else. I didn't have any problem when i had my gsr tranny with this motor.

I upgraded to usdm itr trans (s80 with lsd) a couple months ago. The car idle at 1500rpm, i turned the idle adjustment on the TB all the way down and it still idles at 1300rpm, I did clean the IACV and it like new now. Couple weeks ago when the weather getting chilly at night, the car wouldn't start in the morning, after 3-4 times the car started and the needle fluctuating up and down then stalled, then i started it again and press the thottle pedal to help it a little then it's getting better, but stayed about 900rpm when cold then raised up to 1300rpm when the engine is warm. What could be the problem?

On those chilly morning like in the 40s, i had to try to start it like 7-10 times to get it start. Winter is coming, i afraid that the car won't start when the temp. is lower, and my starter will be gone soon if this problem can't be solve.


can someone help pleaseeeeeeeeeeeeeeeeeeeeee!

 

did you do a tb bypass?

 

^^ what do you mean by TB bypass? i'm still learning the game. The car came with s2 70mm and s2 IM because he was going to turbo it, i replaced the TB with 65mm edelbrock and planning on doing all motor. But the problem DID NOT happen after i replaced the TB, it's after the new tranny installed.

 

any idea?