Air Pump
The belt driven pump is mounted at the front of the engine with power take off from the crankshaft pulley on all except the 2.2L engine. The air pump on the 2.2L engine is mounted at the rear of the engine and is driven by the camshaft pulley. On 1.7L engines, intake air enters the air pump through a tube at the rear of the pump. On all other pumps, intake air enters through a centrifugal filter fan on the front of the pump.
CAUTION:
The intake tube at the rear of pumps used on 1.7L engines is larger in diameter than the discharge tube. If hoses are not connected properly, pump may be damaged.