Originally Posted by Dragon158
I ran into the same issue with my brothers Ford pick up a few years back. In his case it turned out to be a clogged radiator. I know you said that you replace yours with after maket, but how many cores do you have? Maybe not enough?
Maybe even something as goofy as an air bubble in the coolant system?
it has 3 cores, it shouldnt be clogged- its brand new installed a couple weeks ago, i've been running only water in it up until just now- i did a 25%anti-freeze
i had no problems at all with it the past 2 weeks, its almost like i didnt add coolant right or something
the water pump has a thermostat in it soo that knocks that prob. out lol i replaced the water pump about 3 weeks ago