Havening a over heating problem..JUST replace water pump, belts etc.,
Have 176.000 miles on my 91 Accord ex... Been OK since replacement of water pump and belts
NOW having lost of coolant resulting in over heating. Cannot find any leaks. Removed thermostat
Original radiator. Has never over-heated till now ?????? Any suggestions?

 

Did you crack the bleeder valve and let the air out of the system after you replaced the water pump? If not, you probably have air trapped in the system. Could be your heater core leaking. Check the carpet on the passengers side front where the evaporator and heater core are housed. If that's not it then the only other place it could go without being visible is through the cooling jackets and into the crankcase which would mean a blown head gasket. Do you have steam coming out the exhaust or milky oil?

 

Thxs Cousin It. No visible signs of external or internal leaking. NO water n
in the oil. No steam in exhaust. Yes... always bleed the system when i drain coolant.
And heater core good. Am researchin sensors because its hard to start and have to keep
the RPM up so wont stall out.. Maybe timing....thou it just passed smog test and has been running
good since i replace the timing belts and water pump and seals, gave it a tune up and has been running
good for about 2 weeks since. NOW this??????

 

How about the radiator cap? could be the culprit if the spring is weak