1991 nissan pathfinder windshield washer fluid pump seems to have stopped working. When I engage the switch I don't even hear anything. Curious tho, I filled the reservoir to the brim and yet after a couple of weeks without any action the reservoir is half full now. The back sprayer never worked but I do need the front, especially today. The main question here is how do I find out what is broken and what do I need to know to replace it?
Perhaps the reservoir is leaking or the tubes. If the pump was not working wouldn't the reservoir still be full, but it is not. Perhaps it is simply electrical because the cruse control light is not always going on since the same time period. The cruise control works but light is not always on.
An expert who has achieved level 3 by getting 1000 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: Pathfinder Window Washing Fluid not Spraying
Check for any vacuum leaks near the fuel system. be careful to notice where you removed the hoses from. check the windshield wiper motor by jumping it from the battery. be careful not to touch any ground wires with the positive.
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US. click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need. Goodluck!
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
There is a electric motor that pumps washer fluid . Located in the bottom of the washer fluid tank .
Wash Operation (Front and Rear Wipers)
The front and rear washer systems use the same windshield washer fluid pump. When either the front or rear wiper is in the washer position voltage will be supplied to one side of the windshield washer fluid pump (depending on whether it is front or rear), while the other side of the pump is grounded.
At this point, the windshield washer fluid pump sprays solvent onto the windshield. When the front or rear washer is activated, the BCM receives an input from the switch that is activated. The BCM will control the wipers while in the WASH mode. The BCM will control either the front wiper relay or the rear wiper relay to turn on the wipers. The windshield wipers operate at low speed for 3 swipes and returns to the park position.
When turning on the washers do you hear the motor run ? Have some one try it while you listen at the washer fluid tank ! These pump motors do go bad .
turn OFF the ignition.
Disconnect the harness electrical connector of the windshield washer fluid pump.
Connect a test lamp from the windshield washer pump control circuit to a good ground .
Turn ON the ignition, with the engine OFF.
Press the front washer switch.
Does the test lamp illuminate?
YES or NO !
Well you are replacing the normal fuel source, so obviously the engine is not getting fuel thru the injectors. So, have you checked fuel pressure with a gauge ? Do you know for sure the pump is running ?
Check fuse in fuse box inside vehicle,if good,then go to windshield washer pump and disconnect wiring,get meter and check if power is going to pump,if so then pump is at fault,if no power,thenwiring could be short somewhere to fuse box.Also check your washer hoses,that they are not kinked or came loose.Pump could just be loose.
Have someone listen by the washer solvent resevoir, while you turn on the wipers and washer. If you hear the pump motor, you might have a plugged washer nozzle. Sometimes a very small needle or pin will "clear" out the hole.
If you don't hear the pump, you will need to get a volt meter at the wire harness to see if you have power to the pump to decide if the pump, or switch is the issue.