Whats the name of the long intake valves in the lower manifold at the flange? The ones that look like they are gear driven to twist. And what symptoms would you have it those are going bad?

 

APV is at the bottom of the LIM. SSV and VDI in the middle. Symptoms are poor drivability in the low or the high range, depending if it's sticking closed or open.

 

Mine is throwing a code. Says apv stuck open. My idle has Tourette's lol. Also another code says intake tuning valve stuck open.

 

Thanks, I was able to search a lot easier knowing what the valves are called. I think my issue is just going to be the vacuum solenoids. I replaced them like 2 years ago with super cheap ones off ebay or amazon.