tbaird58

iTrader: (1)

long story short i replaced the TB, including all the seals with new gaskets and newish iacv. put a new battery in the car, replaced the alternator, and did a boost leak test to 30psi with zero leaks. and still have a cold start issue. on first start it idles at 2000 rpm and dips to 1700 then back up to 2000 until fully warm then it goes back to normal. if i drive before its completely warm the idle will fluctuate from 1000 rpm to 1500 until warm. i am completely out of ideas of what could be wrong.

DSM*BOY

iTrader: (2)

Have you adjusted the BISS screw in the TB? That or check around the IAC Sensor?

Vitor Freitas

air in the coolant system ?

tbaird58

iTrader: (1)

ive adjusted the biss screw and its set where the ecu is set to 0 so its where it needs to be, and i havent check the coolant yet so that will be next on the list.

Project_Broke

iTrader: (2)

I second the coolant issue.

Bleed it, if it still does it.

Check to make sure the IACV is operating

kaj

iTrader: (60)

Did you clean the sealant (black, dirty-looking stuff) off the inside of the TB by mistake?

tbaird58

iTrader: (1)

i bleed the system and still have the issue, the icav valve is working the way its suppose to so i dont know what else it could be, im thinking about just draining the whole coolant system and starting over to see that helps.

tbaird58

iTrader: (1)

no i made a point not to, i cleaned the center but nothing around the edges so no air would leak

kaj

iTrader: (60)

All vacuum lines are connected? Sorry to ask such elementary questions, but I always start with the basics, otherwise I tend to overthink the problem LOL

tbaird58

iTrader: (1)

ive gone over it 4 or 5 times even after the boost leak test and i couldnt find anything that wasnt connected that should have been.

iLLevo_

Fully drain. Fully bleed air in coolant system

ExViTermini

iTrader: (25)

Stock tune, stock car?

tbaird58

iTrader: (1)

car is tuned, fp red, hks 272 cams, id1000 injectors, and full bolt ons. this problem has started about a month ago now, but its been on the same tune since the set up back in june with no issues what so ever.

ExViTermini

iTrader: (25)

What are ambient temps in your area now compared to June?

Tommyfacekicker

I hope u find the issue.