trouble with 1g tb swap

[fredom dsm]

Hi guys, I did the 1g tb instal on my 2g and now the idle is up and down, no sensors or codes with the snap- on scaner, when i disconect the tps the idle stops going up and down bur the rpm goes up to 2000 and stays there, I hook it back up and again, up and down. My brother says its the tb what could it be?

thanks

 

[zilo900]

It sounds like it could be the IAC motor.

Also check the biss screw and reset it to normal settings,(tighten all the way in, then back it out 1.25 turns)

And lastly, though it doesnt sound like it, the tps sensor may be bad or need to be calibrated

 

[ROOKIE1]

Hi guys, I did the 1g tb instal on my 2g and now the idle is up and down, no sensors or codes with the snap- on scaner, when i disconect the tps the idle stops going up and down bur the rpm goes up to 2000 and stays there, I hook it back up and again, up and down. My brother says its the tb what could it be?

thanks

Sounds like an air leak too . What year Tb ? Shaft seals ? TB gasket ? They are different on a 90 .