Hi y'all. I just fixed my washer not long ago. Ordered new parts and everything. It worked fine in the beginning. However start from a few days ago somehow the washer pump is just stuck on. Whenever I turn on the wiper switch the washer pump comes on as well. I pulled the wires off the pump switch but it's still shoots water out. Any ideas how to fix?

 

That's about what mine started doing many years ago. I discovered that the two pronged thingamajig that engages the toothed wheel on the wiper motor was bent and not engaging correctly, which allowed the pump to run continuously whenever the wiper motor was engaged.

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I can't say exactly which part is hanging up, but I've had this happen as well, a long time ago.

Look at the way that the unit functions. Open it up and have someone operate it, or apply voltage to the leads yourself.

The coil pulls the pawl against the toothed wheel, engaging the teeth.
The toothed wheel then pulls the pawl forward a certain number of times before it disengages.

Something is causing the pawl to stick and not release from the wheel - you've just got to watch and see what it is, then bend it, ot whatever you need to do.

If all else fails, you can replace the pump unit.

- Eric

 

The stock mechanical washer pump uses a solenoid to actuate a pawl that engages a drive wheel on the wiper motor gear train. There are a lot of potential failure modes in this system, and frankly I've always felt that it had waaaay too much monkey motion as a mechanism. Anco sells a bolt-on all-electric replacement pump (Anco P/N 11-515) that has it's own internal electric pump. It looks similar to the original, but not exactly the same.

 

That's interesting, Joe. I had no idea that contraption existed.

I've done the same thing in the past, more than once, but using a newer GM pump, mounted separately.
That's actually kind of cool.

- Eric

 

I also have done the "external" electric pump previously. I just saw this Anco pump in a magazine. Turns out it has been on the market for about five years now. RockAuto sells them for about $17. I like the bolt-in, plug-in design.

 

Me, too.

And unless you get your replacement pump at the flea market or the junkyard for a couple of bucks, you'll spend about the same thing for a later model pump anyway.

- Eric