I have a 99 accord 2.3 auto that will not stop overheating. replaced waterpump, timing belt, thermostat, cylinder head, head gasket. I drive about 20 miles on freeway and notice its starting to go above halfway mark, so I exit then it really starts shooting for hot (max). hoses feel like theyre going to burst, you hear gurgling like its boiling. turn it off, let it sit for 20-30 min. start car and start whole scenario all over again. any ideas?

 

When the engine is cold, remove the radiator cap and verify the radiator is filled with coolant.

 

Thanks for the response. yes. Its full of coolant. I also forgot to mention radiator is about 2 years old

 

Air in system does your year car have a bleed valve ?

 

Did you reuse your old radiator cap when you go the new radiator?

 

sorry for taking so long to get back. busy, busy. response 1, yes it does have a bleeder valve, did that. response 2, put new cap on radiator. im stumped. Thanks for the replies.

 

Check that the thermostat is installed properly. Spring side goes into the head and that the bleeder pin on it is up. You can also take it out, put it in a pot of water, start heating the water and using a thermometer see what temperature it opens at. When you re-install, be sure to bleed the head at the 12mm bleeder bolt until all air is out and fluid flows free of bubbles.

 

W/ a cold engine start and run engine at 1500-2000 rpm w/ radiator cap off. If coolant starts to flow up/out of the radiator and bubbles appear, a failed head gasket is very likely.

A cold engine cooling system leak test can confirm head gasket leak; no external leaks and pressure steadily dropping.

good luck