So after fixing a the hose from my intake to air pump ( not to sure how long its been off got the car a month ago ) It makes a weird noise. When I let off the gas it makes a weird noise (not bov) kinda like the belt is slipping, I was talking to a mechanic he was telling me something about clutch disengaugeing (can't spell) on the air pump pulley.

Could someone explain this to me , any ill effect?
Ryan

 

Are you talking about the MOO noise??

 

If it happens whenever you hit the throttle...

 

The MOO I'm talking about is after the clutch disengauges when you let off the throttle... This is a longshot, but I was getting a lot of noise from my airpump/intake when the throttle was applied due to a hose that was weak and was collapsing under throttle...

 

it is definitly your maf sensor