Actually , it has a timing CHAIN
On a 2002 Ford Explorer : The 4.0 liter Single Over Head Cam , V6 engine has ( 3 timing CHAINS ) The 4.6 liter V8 engine has ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
It does not have a timing belt, Chevy did not use timing belts in there truck engines.
BELT - factory recommended change mileage is : 105,000.
The recommended mileage to change a timing belt on a 1995 Nissan Pathfinder is 100,000 miles. The belt may need replaced before this.
It depends on the engine type. On a 2.0 Petrol the recommended mileage to change the belt is 72,000mls, but you can always change it before.
The 1999 Ford Explorer has a cam chain not a belt. No maintenance is required.
90,000 miles. 144,000 km
Factory recommended replacement mileage is: 105,000 miles.
I would look in your owners manual and see what the recommended mileage is.
at what mileage do you change a 99 Chevy Tahoe timing chain.