4AGE 16V engine overheat when at high speed

[Power_uP]

If everything else looks fine then it won't hurt to check the timing anyway. If you've never done it before then remember to bridge the terminals in the diagnostic socket. I haven't done it in years, but I did watch this video and its exactly like I remember: 4AGE timing procedure

If you can get some Forte coolant flush (or whichever brand you prefer) then its probably worth it too given the age of the car.

Perhaps check if the radiator is blocked, but if it just has a few bent fins then it won't make a noticeable difference, hell here's the radiator from my old 86 and that car wasn't overheating.