Have 97 windstar was working fine on sunday.Went to start it monday morning it just goes click.checked battery is good cleaned connections still only click when try to start.replaced starter same result .removed serpintine belt and tried to roll over with socket on crank.Will turn backwards fine but when tryto roll forward binds up solid any idea as to what it could be?

 

You might try removing the sparkplugs and then see if the crank will turn. You might have fluid in thecylinder/s.