03 expedition stalling out spuratically no warning lights or codes

was dying whenever no warning then would start right back up... ford replaced fuel pump still was dying, then replaced the positive battery cable, still dying then replaced the fuse box said the fuel relay was burnt.. still dying but the day I got it back from dealer I notice a puddle of antifreeze type water on cement has not done it since but then keeps dying off and on... then past couple of days sputtering out like it was misfiring popping etc...and service engine light came on which it never did... turned it off restarted it just fine no rough idling or popping. but light sill on looked at radiator overflow and very very low  on fluid which seems to be red.  no signs of gauges overheating... ive spent over a grand and that's with labor waived twice from ford dealer and they told me when I picked up ride after fuse box replaced they did not want my car back at their shop again.. WTH ? do they have the right to say they found the issue repair and not be held reliable even if it didn't fix the problem after 3 repairs at their shop?  Please help I don't know what to do .. 177000 miles on it sharp looking and had a flawless maint record when I bought from dealer used about 2 years ago...they did say at one point they got codes about ignition issues like computer thought I was turning key off... PATS code I think any help is welcomed. Shannon