overheating on freeway!

Accccord · Jul 11, 2011

i have a 99 accord 4cyl 5 speed. the problem is my car only overheats on the freeway, i replaced the thermostat and did a coolant flush in january.
please help the problem is super annoying because i drive 200+ miles a weekend on the freeway.

DarkSideAccord · Jul 11, 2011

did it start happening after the coolant flush...? did u bleed the system? does the fan kicks in?

Accccord · Jul 12, 2011

It started about three weeks ago. And both fans kick in it only happens on the freeway though. I haven't bleed the system though. Been meaning to do that

DarkSideAccord · Jul 12, 2011

yeah, i think u found the issue right there....

Accccord · Jul 19, 2011

just bled the system and its still overheating

Bax · Jul 19, 2011

have you checked your antifreeze levels?
I know a while back, i somehow managed to crack my radiator tank, and it sprayed antifreeze EVERYwhere when i hit the gas.

ActNow · Jul 19, 2011

Another thing is are you sure you put enough anti-freeze back in? When I did my flush, I reused my coolant (still new) but I practically had to put a half a bottle of new before it was completely filled again.

HondaLuver83 · Aug 2, 2011

Change your water pump.

FunnyVictor86 · Aug 2, 2011

HondaLuver83 said:
Change your water pump.

You've already ruled out the t-stat, fan switch (and fans), coolant/air in coolant. Before you change the water pump replace the radiator cap with a oem cap or aftermarket cap with oem recommended specs. If the cap does not fix your issue then yes water pump is your best bet. If you have the money and have not already changed your timing belt, it would be smart to do it all at one time.