Bad 2000 GTS Issues :(

[Zipperson]

Ok my 2000 Toyota Celica GTS is having 2 very bad issues.
1st - It is hesitating very bad when doing "cold starts" and nearly dies when I turn the A/C on (engine code reads : Random/Multiple Misfires on all 4 cylinders)
2nd - I have to put in 1 pint of Anti Freeze every single WEEK! It is not leaking on the ground as far as i can tell too.

[Franco2112]

Zip check these items.
1. Spark plugs and wires. You could have oil or moister around plugs or just need new ones. Check coil pack for hair line cracks.
2. Check for loose or broken vacum lines.
3. Check air cleaner to MAF connection. A dirty MAF could cause problem.
4. Check for leaks at water pump. With heat it could evaporate quickly.
5. Check for coolant in your oil. It will look milky if it has coolant in it.