Wiper fluid switch help

[1sik78]

My 1978 c10 wiper fluid works and then does not work. I push the button so it can spray and nothing. Later I use just the wipers not the fluid and it squirts fluid. And when it starts to spray there is no stopping it from spraying it keeps coming out until I stop using the wipers. I do not know what's going on, any help will be appreciated thanks

 

[89Suburban]

I believe your model uses a diaphragm kit in the pump for the washer fluid, that may need rebuilt.

 

[1sik78]

I believe your model uses a diaphragm kit in the pump for the washer fluid, that may need rebuilt.

Will look into that thank you

 

[1sik78]

So what I ended up doing was I took of a wiper fluid tank, motor, and harness that connects to the motor and I spliced into the wires that control the fluid on my factory one. Worked great now when I push the button it squirts with a better stronger spray and when I release it stops instantly. Used a 1989 s10 blazer tank,motor, and wire connector.

 

[MadOgre]

Perfect. I did the same as I have the spray pump in the wiper motor.

the nice thing about that is you can just direct wire the tank and forget about the splicing. and you can get new motors for the tank from parts store if need be. and when your wiper motor poops out you can get the one without the integrated spray motor and save a $100

also my 1990 washer tank with integrated spray motor holds more washer fluid then any 73-87 model