so my truck has been lobing and i took it to a mechanic to check it for other things. he said it was the mass because they bypassed it and the problem stopped. so i changed the MASS out for a reconditioned one. same problem
idle from 700-1500/2000 slowly goes down.
the only code that comes up is for an EGR valve...thoughts?

 

Yeh i was told that **** about the mass. and had the same outcome.. Come to find out there was a hole in my intake hose...

 

yes so the hose that runs from the top of the engine into the intake is the couplrite. i tested it by pulling it looks and plugging the intake hole with my thumb and put a rag over the tube and held it with my hand. the engine would idle fine. since i have an intake kit i am gunna have to custom make a air tight seal for the tube. i have heard of ppl just plugging both and not running a tube but idk if that will get me past smog...i hate cali law....