Re: 87 Suzuki dt140 water light
I have never done a water pump myself, had some else do it, Is it hard to do? Maybe I'll have some one do it in the spring.
I would suggest then before you get into the pump impeller removal perform the following to help identify the problem. Process of elimination:
Did you remove the thermostat? While the thermostat is out run water into that opening to wash debri out. Do the same for the sensor opening. Leave both of these openings open when flushing. You can run water down into these openings and out. Leave the muffs off. Also air pressure will work to blow out sand etc.
Took the sensor out and when I kifted the arm, the light went out. yes that side of it may be ok but the temp side of it may not(this sensor serves a dual purpose as a temperature warning AND a flow detecting device). Note, water flow through the passage where the arm is must flow fast enough to "move" the arm to close the electrical circuit. If the flow of water is not enough to move the arm to the point of closing the electrical circuit the light will stay on indicating inadequate water flow/supply which may relate to: an obstruction in the water circuit passages from impeller up and into heads and out, weak pump impeller, thermostat not opening fully or closed.
Usually the best way to determine adequate water supply thru the motor is with a water pressure gage. Since you dont have one then us a thermometer (even a dial meat themometer or alike that is accurate) measure the temperature of the water. It will give you at least a ball park figure to see if the motor is running at normal temperature. If you know the water temperature is normal then most likely the sensor is defective.That probability is likely and you would just replace the sensor. Note if the temperature is normal then "flow" should be normal in relation to the normal temperature. I had a sensor were the motor was not running hot and flow was good ..the sensor was bad.
But If the temperature is well above normal then the sensor temp side is working ok by doing its job by bringing on the warning light for temperature indication and most likely cause by a low water flow,ie. pump impeller etc, that would cause this condition. The temp side and flow side of the sensor work so as one will verify the other in a given range.
So as you can see KNOWING the water temperature you will be able to at least eliminate some items and may not need to replace the the pump.
PS hope that you have at least enough water pressure from the well to provide an adequate water supply to the motor....if not that may cause the motor to overheat or low water flow
