Originally Posted by afws04
The "sucking" noise is still occurring as well, and I can get it to become a steady noise when in sixth gear - only when the gas is slightly applied, when the pedal is pushed in any further it stops, any ideas?
There is a long, thin, grey vacuum hose under the dash on the passenger side that is associated with the HVAC unit. When I first gutted my car I left the hose dangling and was surprised to hear a VERY loud "sucking" sound when the car was running. Stick your head under the dash on the passenger side and see if that is the origination of the sound ?