So when I was coming home from work today at the red light my RPM went almost all the way to 0 and then back to 1 but pretty much kept going between 1 and .5 idk whats wrong. ANY SUGGESTIONS!!!!! my dad said it might be my TPS or something like that what do yall think

 

hi read this ..... https://www.cobaltss.net/forums/2-0l-lsj-performance-tech-47/idle-problem-cure-finally-116051/ .......hope it helps

 

^^^ what he said. clean it out and check the tune, it will be all good

 

If its not that then most likely a vacuum leak

 

i will do on my next day off lol im super busy at work lately and dont get home til late ill let yall know what happens