Hissing from PS/AC

[1997turbodsm]

ok. Something new i noticed today. Parked my car. came back about 20 min and noticed a hissing sound coming from front left(driver side) fenderwell. at 1st i thought it was the tire. Popped the hood and noticed that nothing was leaking(fluids) but i heard a hissing sound. started to mess with stuff and noticed that if i moved the TOP Power steering line(goes to ps cooler in front) that it changed the hissing sound. the line is right beside the Radiator/fan area on driver side? Any clues to what this could be? Power Steering still works find and so does AC.

 

[numlock666]

Same problem here, never paid any attention to it because it still works. ^^

 

[Spoolio]

could have a really really small leak in your a/c, could take a week for the refridgerant to get completley out, did you try tightening all the bolts that go to your ps pump?, one of the bolts could have same slightly loose make a hissing sound from pressure?, that also could have a leak i belive there are metal washers or gaskets on the bolts that bolt into your ps pump., im guessing it may be a slight leak, or could just be hissing from being hot, kinda like when your radiator gets really over heated and you can start to hear some hissing from the cap., just my 2cents/

 

[jdhutchin]

If you wiggle the metal ac lines does the noise change? It could be when you move the ps line you are bumping the ac system and changing the sound that way.