87REX

what exactly is the silver pipe that runs over the engine? The one that comes up on the driver's side and through the firewall on the passenger side. It's got a pump opening like that on a tire at the passenger side end. What does letting the air out do and what is it's function?

Rxmfn7

iTrader: (4)

I believe you mean the A/C piping?

chimp

yeah, sounds like a/c to me. the "pump opening" as you refer to it sounds like a valve to service/recharge the a/c system

skydivr73

yeah, what they said