hey ppl, just replaced my clutch kit for my 03 6MT coupe and i got some issue

-over heating when drive above 80 mph and it just go back to normal once i reduce the speed below 80 mph.
-car dies on start up (throuttle reseted but still same issue)
-cruise control doesnt connect

my local garage told me that my battery died which caused the car dies thing and the cruise control, he also check everthing possible and the coolant system and everything seems to be fine.

ps:i live in a country where the temprature is between 113 F to 122 F in the day time.

 

it's possible that the fans couldn't keep up with the dying power supplied.

 

Guys my heat at idle is normal and i drove it today for 5 hours to test it and pushed it to check and it was fine but what i noticed is that when i drive over 60 mph for about 15 minutes my temoreture increase like crazy BUT when i rev the engine up like i shift to forth gear and push the car the tempreature comes down immedtely to normal, what do u guys think, is it the fans or what???

PLEASE HELP!!!!!!!