I have a 91 Explorer 4x4. the other day I took the kids to Mickey D's and after I left the drive thru I pulled in the parking place to hand out the happy meals. well after I did that I put it in reverse and I noticed I didn't have power steering anymore. it worked fine until I stopped for that minute in the parking lot. there is fluid in the PS Res, but it is very brown. Do I need to replace the PS pump? Has anyone got a rebuild kit for a PS pump and do they work. It is a pain in the butt driving the thing without PS. Thanks for any help guys!

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