Good troubleshooting, sorry I wasn't around to throw Ideas at ya, it looks like you worked this one out by yourself.
It is strange that you didn't get a code. Oh.. wait, did you not get a code? or did you not get a CEL?
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BroncoJoe19
2006 Alt Fuel Jeep (electric)
'98 windstar 3.8L
'99 Crown Vic 4.6L
'90 Full Size Bronco 5.0L
I'm not a professional mechanic, take my suggestions with a grain of salt, or a cup of coffee 
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