Yes, it is.
Yes. Without proper timing the engine will never run.
The 2001 3.8L Ford Windstar has a timing chain, not a belt.
The 3.8 liter V6 engine in a 2003 Ford Windstar has a timing CHAIN
timing CHAIN
On a 1998 Ford Windstar : The 3.8 liter V6 engine ( and the 3.0 ) has a timing CHAIN
There is no timing belt - Windstar engines all have a timing chain. No routine, mileage based replacement required. See "Related Questions" below for more
timing CHAIN
As far as I know all the engine sizes used in a Ford Windstar since the first model year ( 1995 ) have used a timing CHAIN
There is no timing belt on the Windstar engine - it is equipped with a timing chain, which requires no routine maintenance. Also, engine timing is controlled by the engine / powertrain computer module. No user intervention required (or even possible).
The Windstar engines all use a timing CHAIN - meaning you do not have to change as a part of regular maintenance.You shouldn't have to change a timing chain unless there a significant engine failure.
The Windstar's 3.8l engine uses a timing chain
timing chain cover