I just replaced them, there was pretty bad vacuum leak and pretty high ++ short trim at idle.

 

what code did you have

 

**McCauley Calkin (Home Alone) hands to the cheeks scream**

 

They fail often since theyre on the engine side, more heat and thin. I always sell them if i have to pull a manifold because of this. Youre mostly there and if they werent leaking before your work they will after. Just saves the customer money and hassle

 

shaky at idle and +++ short trim. No codes.
I diagnosed it spraying brake cleaner around lower intake and watching short trim. Idle was changing slightly.

I didn't have that problem when I started driving the car couple months ago.