odd idle/ idle noise
 

Just picked up an '87 gx and notice that when I let out the clutch at idle (engine cold) the rpm's drop to about 500 and the car bogs for a second then ramps itself up to 1000 and holds there normally afterward. Also with the clutch in all is well but once I let the clutch out I hear a loud squeak similar to belt screeching....any thoughts??