There is a faint rattling noise coming from the front (belt side) of the engine. The noise just started yesterday, and ever since then, my boost gauge has only been reading 6psi at WOT. It always used to read 9-10 psi before. I just rebuilt the */C snout about 1000 miles ago, so I don't think it'* the bearings or the coupler. Any ideas?
The only thing i can really think of is to look at the crank pulley while the car is running and see if the pulley is vibarating at all. But this wouldn't have anything to do with your low boost...I don't think.
I've replaced all of my worn out vacuum lines and checked the BCA, but my boost readings are still off. At 0% throttle the guage reads -10psi (it used to hover in the middle), and at WOT it goes to 3/4 on the guage and fluctuates by .5-1 psi, it used to peg itself between 9 and 10 psi.
Could this be bacause of a bad BCS? What'* the part # for it if it is? I can't find it anywhere online.