How can you tell if a timing belt, A/T belt,P/S belt & A/C belt all need to be replaced?

SOURCE: how long does a timing belt last on a Hyundai Tuscon

Generally speaking most cars should have the timing belt changed every 60-80K miles just so that it doesn't break while your driving and do furthur damage. Most vehicles have the water pump changed at the same because they're in the same area and once you open it all up you just go ahead and change it all.

SOURCE: car will not start

Try running a wire from the little terminal of the starter motor to the Positive on the battery , Disconnect the little wire thats on there first.No need to turn the key on as we are bypassing this.This should cause the starter to turn.Make sure that if its a manual that its in Neutral.
If the starter motor turns then the problem is either the relay or the ignition switch.Or if its an automatic Transmission it could be the inhibitor switch .
Hope this helps
Cheers
George

SOURCE: timing belt on 2004santa fe crdi

there is a mark on the cam shaft pulley must be face the right 90 degree.and first two cams in the cam shaft must face up and last two cams in the cam shaft must face down.and crankshaft pulley must mark must line with the pin above it,the hardest part is the engine support coverning the timing belt for the santa fe..i hope this would help you

SOURCE: i just had my belts

check the tension. cheap belts will stretch. if after you retension them (especially the alternator belt) you may need to replace them with BANDO or OEM belts.

SOURCE: 2002 santa fe 4 cylinder

its out of time should be warranty on belt hopefully no bent valves and or holes in pistons