90 civic hatch, has new waterpump,"new" head and new headgasket,new waterpump,removed thermostat,new radiator cap and swapped radiator for one without problems. i drive for about 10 minutes and it begins to overheat with fan on. Doesnt matter if im sitting or driving.Noticed today the top radiator hose was hot and the lower was "cold".Im lost...i was told before it was not very likely for there to be a clog in the block but its seeming more and more likely to me.

 

maybe u got a blocked water passage in the head or block?have u ever thought about giving the system a good flushing?i know this is dumb *** question but how well did u bleed the system?and u sure it aint leaking in places u can see that the water pipe backside of the thermostate housing?

 

3 different heads so probably not the problem, block is a possibility,bled the system and no leaks

 

have u try taking out the thermostate and see if it still overheated?

 

that was the first thing i did

 

maybe my new water pump is a pos

 

is it leaking out the seep hole?

 

nope..flushed it and didnt seem like anything was clogged..had another friend come by and check it out too...No luck,couldnt even get it to start but once after flushing and it ran like crap..i think somethings up with the block SO pulling the motor this weekend im tired of messing with it.

 

thats whtas i said the first time maybe u got something stuck in the water passges of the block