its a honda accord 1991 Lx my car started overheating only when i stop when i go it doesnt overheat what should i check like the water pump
chances are your radiator cooling fan is not working,could be the cooling fan switch,bad fan motor,or relay
Pull it out of the car and look at it. But since your water pump is most likely driven by the timing belt, that's a hell of a job. My guess is you probably need your timing belt replaced anyways though.
You can start with the engine cold. Take off radiator cap and make sure coolant is full. Start engine and wait while it warms up, keeping your eye on the temperature gauge. When it gets to operating temperature, the thermostat should open and the coolant should start rushing past the opening. If it does, the thermostat and water pump is fine. I suggest you make sure your radiator fan(s) is/are turning on at the correct time. Lastly, if you can't figure it out, get a new radiator cap.
First- don't make assumptions. Let's begin with what you know: your car overheats when you stop but not when you drive. That's not the water pump. To get a good diagnosis, you should get a repair manual and read the troubleshooting chapter. Look for your symptoms and try to identify the problem. Without knowing more, you're driving a ten-year old cooling system. Possibly there' some build-up in the radiator that reduces flow of coolant. Could also be build-up in the cooling jackets in the motor. The controls for the electric fan could be failing, so the fan's not operating when the temperature goes up. And when you drive, air goes through the radiator sufficiently so it doesn't overheat. Could be several factors, but not necessarily the water pump. Possibly the belt that drives the water pump is slipping, but you'd likely hear a squealing noise. Hope you find the problem without just swapping out lots of parts until the problem goes away. Take care!
