i have a 92 civic hb with jdm b18c itr motor. when i drive around town the temp on the cluster goes straight to H. i feel the radiator hoses and the upper one is hot as fu@&. and the lower hose is cold. while the car is idiling i turn the heater on and it puts out no heat at all. changed the thermostat and it made no difference. wonder if my water pump or radiator is bad??? anybody have any ideas.

thanks

 

and you drive around like that?
change your thermostat

 

i just changed it today and it made no difference

i was thinking about running it with no thermostat to see what happens. or would that do damage??

 

u got air in ur system.... let the car idle while the the radiator cap is off, and full blast the heater and let all the water circulate until the termostate opens and the fan has come on...them u can refil if nessesary and close the cap

 

i let the car idle today for about an hour. the heater was on flull blast and it was still blowing cold. the upper hose was hot and the lower hose was cold.
dont know what to do???

 

if ur car is heating up try not to drive it around
u turn on the car in the morning and u drive around, after how many minutes does ur car start to heat up?

 

not even 5min

 

disconnect a lilttle coolent hose in the rear of the engine and pour coolent in there.... try that and then do what i said before about letting it idle...

 

do u have the stock radiator? if u do, u need a better one, liek the del sol vtec, or integra, or fluidyne

 

Here's another thread that deals with overheating. He seemed to have the same problem as you:
https://honda-tech.com/zerothread?id=1064025

Hope that helps.

 

figured it out, bad radiator. bought a new civic radiator and used hoses from a 94 del sol vtec. now the temp never goes past 1/2 on the guage. thanks for all your help