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A washer pump in a car's windshield wiping system moves washer fluid from a reservoir through hoses. The motorized pump pressurizes the fluid to allow it to be squirted from the hoses through nozzles onto the front and/or rear windshield of a car. The washer fluid helps windshield wipers get rid of rain, dirt, or other objects that can interfere with a driver's visibility. If your washer fluid is not being sent out when activated, the solution could simply be filling the washer system's reservoir with more fluid or cleaning the nozzles and hoses. In more severe cases, the washer pump may need to be replaced. Here are steps to troubleshoot a windshield-washer pump.
go to a service station with an air compressor and with the air turned down to about 20 lbs blow into the washer top small hole to force fluid thru the hoses,not a lot of pressure so you blow hoses off or rupture something
The fluid for both windows comes from the front resivoir. The pump there is suited to pump either to the front or to the rear based upon your operation of the switch & if the rear isn't working, the line will need to be removed near the pump & checked for obstructions.
These can be cleaned with a vacuum tester, the kind that lets you pump the unit & draw a vacuum, connected to the hose, it will draw any debris back out of the tube. You probably don't want to try & force fluid through the hose as it won't fit through the washer nozzle.
Coolant in 50% concentration goes into the coolant overflow bottle. Windshield wiper fluid into the wiper fluid bottle. Power steering fluid into the power steering fluid bottle. You do not need to add any other fluids to these. Do not add water to the washer fluid bottle for example, if you drive in a climate that would allow it to freeze.
I'm pretty sure it's the same as the front washer, You can check by see ing if there are two pumps in the front washer resevoir, if not there is a possiblity that there is a bottle in the back, servicable by opening the rear door and looking at the walls behind the tires. I hope this helps
To fill the fluid for the front wipers, look under the hood to the left, there are two plastic containers one is for the radiator fluid and it will most likely be the front one and the fluid color will be green, DON"T fill that one, FILL THE ONE NEXT TO IT, With blue windshield wiper fluid. FOR the REAR wiper fluid, open the back hatch and look to the left, open the little door there and you'll see where to fill, this one holds alot of fluid, about a gallon.