it could be an issue related to your oxygen intake check oxy sensors if check engine light is on.
Do you have a 3.8 engine for a 2001 Windstar Ford Van?
There is no carburetor on a 2001 Ford Windstar engine because the engine is fuel injected
diagram of motor windstar 3.8
In a 1998 Ford Windstar : There were 2 engine sizes offered from the factory : A 3.0 liter V6 engine and the 3.8 liter V6 engine
The oil pump is bolted to the bottom of the engine block INSIDE the oil pan on a 1995 Ford Windstar V6 engine
The 3.8 liter V6 engine in a 2003 Ford Windstar has a timing CHAIN
The 2002 Ford Windstar ECU can be found on the firewall in the engine compartment. The ECU will be on the drivers side of the firewall.
Actually , the engine on a 2001 Ford Windstar is fuel injected so there is no carburetor
( 5W-30 ) is the preferred engine oil , according to the 1996 Ford Windstar Owner Guide
3.8litre
On the underside of the engine.
Follow the LOWER radiator hose from the radiator . It connects to the water pump on the engine on a 1998 Ford Windstar