Need help with idle problem

[oVaBoost]

Hello I just got done doing a 1g swap. started up the car and idles at 2k and when it warms up it trys to idle down but it wont let it idle down, it just bounces between from 1k to 2k. Its a FWD auto Talon Turbo. The motor was in an AWD talon and did the same thing but most stuff from the auto got put on the awd motor and i cant figure out the problem has this happen to anyone. Im think ecu problem we put the ecu from that awd in the fwd also. Thanks for the help hope i we can fix the issue.

 

[LiquidX]

Test the TPS. ECUs are the same between FWD and AWD except the govonor.

 

[mikelv]

Make sure you check base timing and adjust your CAS.
Also, adjust the BISS in a little to bring the idle down.

 

[turbo addict]

if after the other two suggestions you can look for intake leaks. Also try messing with you iac. I checked everything and was chasing my idle for ever it seemed. I finally figured out i had a bad fiav. So i got rid of it and all has been well since.

 

[phunny]

I 2nd the fiav, dirty little guy.