Ok, this is confusing me. I have a 92 accord and I recently had radiator problems. I replaced the radiator, the lower and upper radiator hoses, and checked all my connections etc. The car runs cool while driving, but if I stop for awhile it overheats. While driving the heat works kind of, but when I stop it goes cold. Currently I have no thermostat in the car because when I install one the car gets no coolant to the lower hose. Its starting to cool down outside so I need to put one in. I have tried three thermostats and end up with the same conclusion, and I have tested all three and they all work correctly. I have checked my heater core and it works fine. Also the car idles funny when it is first started, but calms down after about ten minutes. I have already gotten all the air out of the coolant system to no avail. Please, help.
I smell a bad water pump.. If your water pump is bad you get very poor coolant circulation not to mention at a stand still(red light) you get less air flow to cool down the coolant. Since you have poor coolant circulation you wont get the proper coolant to heater core as well so you get less warm air threw heater. Not to mention that when a water pump is faulty and you have a thermostat it allows even less coolant circulation compared to a constant flow of antifreeze. I would have it checked. Good luck
P.S, I am assuming that your electric fans are working and you have to proper mixture of antifreeze and water.
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yes the fans are working, and I have bled the system a few times to make sure all the air was out. When I put the thermostat in it overheats as soon as it warms up. Without the thermostat it only overheats if I am sitting in traffic or if the car is left on not moving.
I haven't seen the weep hole leaking at all, but that is my next step. I am taking the water pump off tomorrow, I will keep you posted. Thanks for the help.
Did you find the problem yet? I have a similar situation, but not exactly the same. Mine does not over heat, but I do not get enough heat from the heater. I was thinking mine might be clogged and I was going to flush the system with a chemical flush. I figured that it wouldn't be the water pump because I do get water flow and I am assuming that if the pump was shot, I wouldn't have any flow. Please let me know.
Are your fans working? Almost sounds like a bubble in your coolant. Did you bleed the air out after the radiator install?
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