Defective Windshield Washer PumpĪnother common cause is a defective washer pump. When you push the stalk to spray the windshield, nothing happens. If the windshield wiper fuse has blown, you won’t be able to get any fluid from the pump. Instead of harming the electronics, a short simply blows the fuse. Blown FuseĪutomotive fuses ensure that there are no shorts in the electrical system, which would otherwise fry expensive equipment. If the hose is broken or torn, you may see the fluid running out under the car. There’s also the chance that the hose has become damaged and can no longer send out washer fluid. A clog is possible in the hose, restricting the fluid. The same thing can happen with the hose that leads from the reservoir to the nozzle. There’s not a clear path for the fluid to travel to the windshield, so you end up getting nothing. When the nozzle gets too much gunk inside, the spray can no longer force through. This nozzle is even more susceptible to debris and contaminants if you park under a tree. The nozzle that is responsible for spraying out the fluid, is in a place where debris can affect it. Thankfully, the fix is simple and we will discuss it in a minute. If you hear the system running but don’t see any fluid, this is one of the most common causes. After many miles of cleaning off bug guts, you may have emptied the reservoir without knowing it. You probably use more windshield washer fluid than you think. Let’s look at these possibilities closer, helping you determine what might be causing your trouble. There could also be a mechanical problem, whether it’s a clogged nozzle or hose, a blown fuse, a defective windshield washer pump, frozen fluid or an electrical issue that needs to be repaired. If the windshield wiper fluid isn’t coming out, the tank may be empty. Still frustrated and the back squirt nozzle does not spray water.Conclusion Reasons Why Windshield Wiper Fluid Not Coming Out Must be a wiring issue, although I cannot find the wire return from the rear wiper motor that will operates the pump in reverse to squirt water to the back washer nozzle. I have now replaced both the front wiper motor and rear wiper motor twice and I still have the same problem. It appears there are relays in both the front windshield wiper motor and rear wiper motor that perform the magic of reversing the voltage at the actual washer pump. I also replaced the wiper switch on the steering column. I have replaced the washer pump with no change to the symptom. Reverse the power connection and fluid goes the other way to the other window. I proved this using a 12VDC supply connected to the washer pump. When I operate the washer on the rear, the pump does not operate and I cannot hear it.Ĭonnect 12 VDC to the pump one way and it pumps fluid to the front, reverse the 12 VDC power at the pump, the pump runs backwards and pumps fluid to the rear washer. When I operate the washer on the front, the pump operates and I can hear it while spraying water. There is only 1 pump on the washer reservoir inside the front passenger side fender. I got into the Ford wiring and am still frustrated.Ģ012 Escape, front washer works, rear washer does not. Obviously a wiring problem since I have changed every component in the system.

Fuses are good for both front and rear wipers. I have changed the pump, the turn signal switch that activates the front/rear pump and the rear wiper.

I can blow air through the line and it bubbles in the washer tank. It does not operate, there is no voltage present and no clogs in the water line. My problem is the pump operates to the front windshield, however, does not operate the rear washer. When I put the pump back in, I can operate both washers supplying external 12 Volts and reversing the connection. When I reverse the voltage (and therefore reverse pump direction) it pumps water out the other discharge port. When I connect 12 Volts to it, pumps water out one discharge port. I have removed the pump from inside the fender well. Rear washer - reverse the voltage to the pump, reversing pump direction to pump water to the rear washer nozzle. There are 2 hoses coming out of the pump, one to the front washers, the other to the back washers.įront washer - 12 Volt powers the pump to pump water to front washer. My symptom, front windshield washer works, rear one does not.įord uses a common pump for both front and rear washers.

Motor for windshield wiper fluid