The Gates website ( they make timing belts etc. ) shows :
Inspect at 120,000 miles , replace as necessary for the 2.5 liter four cylinder
in a 2000 Ford Ranger
( But in general , for all vehicles they show to replace every ( 6 years or
manufacturers recommended mileage which ever comes first )
In a 2000 Ford Ranger : 2.5 liter four cylinder engine has a timing BELT 3.0 and 4.0 liter V6 engines have a timing CHAIN
3.0 liter timing chains marks
Belt.
On a 2000 Ford Ranger the only engine that uses a timing BELT is the 2.5 liter four cylinder engine ( I have no idea of what you mean by a " delay switch " )
I checked Fords scheduled maintainence guide and the Gates website ( they make timing belts etc. ) for the 2000 Ford Ranger , and both sites show to INSPECT the timing belt at 120,000 miles and CHANGE IF NECESSARY for the 2.5 liter - 4 cylinder engine in a 2000 Ford Ranger
timing is computer controlled. You don't need to do any timing.
1993-2005 Ford Ranger V6 3.0L engines are equipped with a timing chain. - Haynes Repair Manual #36071
What is the timing for a 1998 ford ranger 2.5l
where to set timing for a 1988 ford ranger 2.2l
is there a recall on the timing belt on a 1999 ford ranger?
Inspect at 120,000 miles , replace if needed ( Ford maintenance and the Gates website ) for the 2.5 liter , 4 cylinder , in a 1999 Ford Ranger
Timing for a 1994 ford ranger with a 2.3 l