2001 Hyundai Tiburon. Starts very hard first time

download manual:
https://www.manualslib.com/manual/834518/Hyundai-2001-Tiburon.html

Wiring diagram: 2001 tiburon wiring diagram Google Search

Fuses: 2001 hyundai tiburon fuse diagram Google Search

If it's a standard transmission, this could be possible.Another way you can try is roll the car up to speed and throw in in gear and see if starts.The ignition must be on

fuel pressure regulator. replace it. i had the same problem.

Only 2 parts remaining are the thermostat and waterpump. Always start with the thermostat when diagnosing an overheating problem. If the car is overheating constantly under all conditions and coolant is backing up into the reservoir, it's very likely to be the thermostat. If it only overheats at low speed or idling, it's more likely the waterpump.

check the battery or alternator it sounds like the alternator is not charging

CV joints are not hard if you do some research. Get a shop manual first. You will need a good jack, two jack stands. I am not that fam. with the Hyundai, but some fwd cars have med/ large bearing retaining bolts so you will need 1/2 drive socket set up to say 33 mm. You will need a whole day or 2 to do this. set aside that much time in case of some road block. You have to pull both wheels and fender wells. On some cars you will have to pull the struts or the lower arms that hold them to the body to give room to pull out the cv assy. Do one at the time on some fwd's if you pull both the ring gears can fall out of sync and thats not good. Buy the complete cv axel rebuilt if you can. Work slow, take pictures as you go, be careful.

Based on what you've described so far, you are not familiar with the system you are trying to repair (not intended to insult you). Take/tow the vehicle into a Hyundai Service Center (dealership), pay the diagnostic fee. They will tell you EXACTLY what the problem is and what's needed to fix it (parts, labor, tax, time-frame, etc.).

why 2000 hyundai tiburon
overdrive sometimes not working

need more info ie no spark, no fuel, crankand cam ref. ect. cold start, hot start.i will be happy to help let me know