At what mileage should a timing belt be changed for a 1999 ford escort wagon

Hi Scott,here's a link on removing timing belt cover,here's how to replace belt.If you run across a bad sprocket,click here.Here's the belt.Says to remove water pump too,here's how.

if you drive alot every 60-75,000 if not driving much about every 2 years.

It is located behind the timing cover and run by the timing belt. This will be a major job to do. You will want your mechanic to do this job. When you change the pump, make sure you change the timing belt. hope this helps

Haynes Repair Manual
Ford 1999
You can buy it on line for $20.
Go to part ENGINE, and use chapter Timing belt inspection, and replace. Location of TDC.
Hope will help.

The Ford maintenance info for 97 Escort can be found at the below site, where you can download your original owners manual and maintenance schedule for free. It states to replace the camshaft drive belt every 60k.
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp

between 70,000 and 90,000 miles is the best time some do make it past 100,000 but i would not gamble with a good car change it before damage occurs.

replace tensioner as recommended when timing belt is changed

may be a timing belt issue

How to replace engine belt 1999 ford escort

sorry but iam bumb englishman in spain ,what are you calling the serpentine belt the timing belt or the fan belt ??