99 350 vortec rough idle

[Ben Burrage]

Great thread. About to tackle this myself. Did you have to do any sort of relearn when you replaced TPS or IAC? And any other things to look out for if I pull off throttle body to fully clean?

 

[Raspi454]

Great thread. About to tackle this myself. Did you have to do any sort of relearn when you replaced TPS or IAC? And any other things to look out for if I pull off throttle body to fully clean?

I didn't have to do anything, didn't even disconnect the battery, which maybe I should have? I just put the new IAC in and started it up, and it works great. I didn't take of the TB yet, it was getting cold outside. But I plan to do that when I do the tune up.

 

[HotWheelsBurban]

Great thread. About to tackle this myself. Did you have to do any sort of relearn when you replaced TPS or IAC? And any other things to look out for if I pull off throttle body to fully clean?

No relearn required on my vortec 5.7 Burb, when I replaced TPS and IACV. Maybe the computer was just happy they were working? It ran better with the new parts....