I need to change the timing belt . i have a 2003 hyundai sante fe and the belts are squealling

It shouldn't you have two different systems the harmonic balancer is external and timing belt or change is internal

did you try autozone library

"POP" LIKE A BACKFIRE???.....TIMING BELT IS 1 OR MORE TEETH OFF

Nope doesn't matter

this

Feel free to mail me on [email protected] and i will reply with the diagrams.

normal recommended practice is 100,000 km but can last up to 127k-160 but would not leave it for that long as a broken belt will cost more than to replace one before time.

Hope you changed plugs as well
When you had problem with coil,plugs will get damaged,and will malfuntion

Yes.
Regards.DT

Tell you what... No response, then I can't help. If you're talking about the accessory drive belt tensioner pully, there are two 12mm bolts which mount it to the engine. You'll need a 3/8's drive ratchet (or other 3/8's drive device) to release the tension so you can remove the accy drive belt to facilitate removal of the tensioner pully. Once you're remove the accy drive belt, remove the two (2) 12mm bolts holding the tensioner pully to the engine (make visual note of position/direction of the drive belt when you do this because you'll need to position the drive belt in the same orientation when you install a new auto-tensioner in place of the old one.).