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Does the windshield washer container have an overflow port on it. i've noticed after having it filled up that it was leaking behind the passanger side wheel basically near the mud catcher (flap). not inside the wheel well but inside the engine bay over the wheel well. I later poured water to the top of the container to watch it continue to leak and drain. Finally in the morning before I left for work (since it was still leaking) I decided to run the wipers and clean the window. Noticed the area has been dry every since. Anyone else come across this?
 

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I am thinking that the hose that connects to the container has a loose clamp or is cracked. I know its been a bit cold in PB this year so the fluid may have slightly froze over night.

Are you using water or washer fluid?
 

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Mine actually had a split in the seam of the tank, right by the pump. It always seemed like it ran out much faster than it should. If you take out the wheel well liner on the passenger front side, you can see the whole tank. I tried to caulk the seam, glue it, but nothing seemed to hold it. I bought a whole new tank and put it in, no problems since. You can at least pop that fender liner out and see if you can figure out where it is leaking.
 

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Yup, just like Gti stated. Remove the inner fender liner and check it out.

I wonder thou, could the pump itself crack? I know this happened on my old Cavalier but am not sure exactly how the Frontier's set-up is.
 

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Goop !!

Don't know how to access it .. throught the wheel well sound like the best .. but fixing it I do know. Stuff is called "Goop" ... get the Marine grade stuff. Fixed my washer tank in my old AWD Astro ... lasted for years. It expands and contracts and stays elastic. I fixed a 6inch crack on a seam.

d-mo
 

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If you're going to pull it apart, find out if a dealer keeps one in stock so you don't need to take it apart again if not repairable.

Clint
 

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When mine began leaking, the windshield sprayer had also stopped working, so I took the truck to my mechanic. It did need a new sprayer motor.

It also turned out that the fluid reservoir, the PITA one with the funky shape, actually had TWO pieces: the neck piece and the real reservoir. I guess over time, if there is any slight wearing or warping between those two plastic parts AND you fill the res all the way to the top of the filler, that’s where the leak occurs. You probably would assume the thing was cracked, as I did.

The easy and no-cost solution for me was to just not fill it past the main res body. No leaks since then.
 

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Mine had a leak a couple of years ago. I found the fill tube was loose where it connects to the tank in the fender well. I removed the tube and reinserted it with a liberal amount of silicone sealant, let it set for 24 hrs and refilled the fluid. No more leaks.
 
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