Here's my setup
93 LT1 Trans Am
Flomasters
Deleted Cat
K&N Intake

It's an M6 and my idle sits around 1100 usually, but sometimes when i'm lucky it'll drop down and sit at 750-800 and then about 10 seconds later the car thinks it's doing something wrong, bounces up to 1400 and settles back down to 1100.

I replaced the IAC 75$... it didn't help, I adjusted my TPS sensor, which didn't help either.

What else could be the problem?

Thanks.

 

Mine did about the same thing when an O2 sensor went out...but I was getting a SES light.

 

Holy ****, that might be my problem.