Any idea what this is?

[Saudade]

rear wiper sprayer. mine has the same thing but some one has mine hooked up so to spray the front window you push the botton to spray the rear . mine is a 90 also

There are 2 pumps. Maybe the PO swapped the hoses because the front pump failed?

 

[KaiserMan]

rear wiper sprayer. mine has the same thing but some one has mine hooked up so to spray the front window you push the botton to spray the rear . mine is a 90 also

That's not for the rear spray. My 90 has rear wash and still has this little nipple. Maybe a breather for something?

 

[Saudade]

Well, I can find no trace of it in my parts guide. Thought maybe something ABS related. Maybe one of you could attach a clean piece of hose as see it you can blow through it. If you can, blow some smoke through it and see where it comes out.

 

[KaiserMan]

Could be ABS, but I have that as well and it's still not hooked up to anything. I'll have to take a look at my parts 90 that does not have ABS.

 

[88 Wagonman]

There are 2 pumps. Maybe the PO swapped the hoses because the front pump failed?

That's what I did for a temporary fix on mine. Makes it very interesting to try and drive, push the button and work the wipers.