Random running rough
 

So in the last couple of days, car has been running bad. RPD air/fuel maxxed out to 18. She spits and spudders. This all happens till i turn car off, let sit a few hours, then its fine for a day then acts up again. Any ideas???

2010 TC SS 76K 30% on oil life.

PLEASE HELP

TIA

First you need to check for pending codes.

Then I would check for air leaks. Start with the intake and then check for leaks in the piping, intercooler and cold side pipe.

Also make sure the evap purge selenoid is working by blowing through it.

Finding codes should be first though.

I don't have a light on currently.

Doesn't mean theres not a code pending that hasn't set a light yet. Happens all the time.

Ok thanks will do