Mine on the 98 is a belt. It is behind the serpentine belt under covers on the front of the engine.
A 1998 Mercury Mystique , 2.5 liter V6 has : ( 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
Is it safe to drive my 2000 Mercury Mystique with a bad timing belt?
On a 1998 Mercury Mystique , 2.5 liter V6 engine : NO timing belt ( it has 1 timing CHAIN to each cylinder head , so there are 2 timing CHAINS )
Timing chain.
How do you replace the timing chain on a 1994 mercury grand marquis
The 3.0 liter V6 engine in a 2006 Mercury Montego has a timing CHAIN
According to the 1996 Mercury Mystique Scheduled Maintenance Guide : The timing belt for the 2.0 liter four cylinder engine is changed at : ( 60,000 mile intervals )
Diagrams for timing belt marks for 1999 Mercury Mystique cars are great for mechanic's. If they need to replace a timing belt the diagram can show pictures of how the parts are set up to make sure they are fixing the timing belt correctly.
timing CHAIN
Chain
yes.
According to Gates ( they manufacture timing belts etc. ) starting with the 1998 model of the Mercury Mystique - it shows to inspect the timing belt at 120,000 miles and replace if necessary on the 2.0 L - 4 cylinder engine