I had the exact same problem. '89 with 3.0 and leaky power steering pump. I rebuilt it with a gasket kit of ebay. Wasn't too bad, just be patient. Taking apart the pump was interesting and a little time consuming. Probably took me a good 4 hrs. My time is cheap though. Probably leaking through the front oil seal right behind the pulley. All the gaskets were dried and brittle on mine. They just broke apart. If time is an issue, I'd just buy a reman.