Volvo 850 Wagon Rear Window Washer

[hanzbe420]

so did anyone ever confirm the rear pump cause people are saying there is only 1 pump, and in this diagram its showing the front pump also. Anyways when i pull the arm for the front windshield i hear the pump loud. But when i click the button on the arm for the back windshield only the wiper goes and nothing comes out and i dont hear the motor. Am i supposed to be hearing the motor when i press the button exactly like it makes the noise when i do the front windshield? Or what? And if i am supposed to then its probably a short in wire or what? I checked the fuses there is a fuse for the rear wiper, but it was good. I dunno if its clogged or what but the pump doesn't make any nose upon pressing the button.

[Jazzop]

The pump for the rear washer is attached to the fluid reservoir in the engine compartment.

1. You need to determine whether the pump works. If you have run it for a long time without any fluid, you may have burned it up. The absence of a sound does not bode well, but you should have a helper activate the switch while you position your ear very close to it.

2. If the pump works, determine if the tubing is continuous from the pump to the rear cargo area. Pull up the floor panels in the cargo area and look at the tubing as it passes through the right rear corner of the cargo area, just near the fuel pump. There is a transparent plastic filter that should be nearly full of washer fluid. If the pump works, and fluid is not making it to that filter, then you have a leak somewhere in the long line that runs along the right side of the floorpan from the pump to the cargo area. If there is fluid moving, then check the line as it runs upward through the D-pillar towards the hatch.

3. Because the fluid must fight gravity in order to make it from the little filter to the spray nozzle, there is an inline check valve located somewhere in the hatch door trim. My car had an L-shaped valve only a few inches from the spray nozzle, but I have seen others in the junkyard with a straight-through valve farther upstream near the right side of the rear glass. If this valve fails, the fluid will retreat quite a long way into the system and the pump must run for some time in order to expel all the air and "reprime" the washer circuit. This happened to me last year, and that is why I am so familiar with this system. Just go to the dealership and buy a new check valve rather than try to use one from the junkyard. They seem to fail easily, and I went through several dead valves from the junkyard before I fixed the problem with a brand new one.

[abscate]

There are two pumps in the tank under the hood, one front, one rear.

[hanzbe420]

so i know theres 1 pump in front under front driver side and it makes noise when i do the front washer. so your saying the pump on 94 850 turbo wagon is connected to the washer container itself?

[hanzbe420]

is there a picture of this? i cant seem to find nothing. Like a regular picture not that diagram. lol I am probably gonna have to pull all that stuff apart to get to it if it is on the container. Its like the 1 fix that doesn't have videos or tutorials lol.

[hanzbe420]

ok i just went out there i see the pump underneath is actually the pump to the back... I guess the write up was right. i didn't no the pump for the windshield was on the tank. and the one underneath was the back. its deff burnt out or something cause i dont hear nothing. I am gonna disconnect it and test it with 12 volts or something.