According the manual book ,Mazda proteges 2000 has timing belt and should be replace at 105 K miles .Hope would help .
The Mazda Mpv 2000 timing chain
timing chain
where are the timing marks on a 1984 mazda b-2000 pickup?
The 2.5 litre V6 engine in a 2000 Mazda MPV has timing CHAINS
A 2000 Mazda 626 (4 cyl and V6 engines) has a timing belt.
timing belt
on the cover of the timing belt
YOU DON'T WANT TO TRY THIS BY YOURSLF IF YOU HAVE NEVER DONE THIS BEFORE
The 2000 Mazda Protege has electric fans, hence there is no fan belt to change.
The ECM on the 2000 Mazda Protege is located on the backside of the engine. It is half way up above the drive shaft.
where is the transmission shift solenoid located on a 2001 Mazda protege
A 2000 Mazda Protege with 1.8 DOHC engine appears to be a "free-running" engine, meaning there is no valve/piston interference in case the timing belt broke. There is enough clearance between the valve and piston, even if the cam stops (i.e. the timing belt breaks) with the valve fully open. Therefore, the car will not be damaged if the timing belt broke.