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JediMcMuffin

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Excuse me sir. I've had this issue since 2021, and plenty of other people here HAVE made mention of it. It does seem to be related to sealing/air pressure on that cap, and happens aggressively while at elevation. I'm implementing his fix on my Bronco and my wife's Explorer in the next 5 minutes.
 

JediMcMuffin

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well...he can always change his mind.

https://parts.ford.com/shop/en/us/w...parts/washer-fluid-reservoir-cap-p-gt4z17632a

I probably would have taken the foam out first to see if it changed anything.
You know, I just went and looked as I had not dealt with the issue in some time. My Bronco no longer has foam on the inside of the cap, but I'm positive it did at one point. Then I went over to the wife's 21 Explorer, had her hit the button and hold it. Nothing, nothing, nothing, and then I popped the cap and spray came out nearly instantly.

So probably right, just remove the foam.
 

buzzcutt2

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Danielsan [ATTACH type="full" alt="1751404011988-y1.jpg said:
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I need this!
 

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KevinInChicago

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well after sitting for 48 hours in the heat, hit the button and zero delay or issue with the hole drilled into the cap. It seems to put out better pressure also than without the hole. I guess you could also just not snap the cap closed if you are scared of a hole. Mine is fixed now. I never imagined this much typing over a little hole from everyone. This was probably something Ford never tested for in all the development time on this thing. Surely it would have come up somehow. I guess you could also just cut a tiny notch on the bottle lip itself, but a cap is cheap and easy and I could plug the hole with some dab of blue silicone if it did not work. I remember back in the 70's Fords would have a combination bottle for antifreeze overflow and washer fluid with a crappy top and a crappy lid that sealed nothing out. I run nothing but RainX washer fluid in all my vehicles. I just wish they made it blue like a standard fluid. Orange is too much antifreeze color in my book. I never had a problem with RainX except the bottles themselves will leak if you store them for a year or so from what I have found. I have a fleet of trucks so I buy it about 100 bottles at a time from Home Depot and they deliver it to my shop. I need to find or make a batch that can really cut the bugs down or dissolve them without being dangerous methanol that even absorbed into you skin can cause blindness. Washer fluid is not that safe.
 

Xterra2Bronco

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Mine does it every now and again. I just push on that button so hard until it squirts.
 

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KevinInChicago

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Just in case, drill from the inside out with the lid open or you get plastic crumbs into the system. Captain obvious but just sayin.
Mine is a Base model. Maybe I got the cheaper version of the washer system.
I guess you could plumb a vacuum line from the lid to a clean space with a filter on the end, like a small mesh plastic fuel filter if you are worried about a tiny bit of dirt getting in the hole.
It does work extremely well and consistently now compared to what it did before. I try to never take a vehicle in at all if I can avoid it for warranty work. I mentioned what it was doing to my Ford Dealer and their response was that the pump was probably made in China so they would start by replacing it without figuring out why. I would be back at square one if I did that.
 

hookedspur.tc

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We are having the same issue, hadn't heard or thought about drilling it. I you murder a cap what are you really loosing if it doesn't work?
 

Y2KFirehawk

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Had my 22 since new and never had this happen till Monday evening. Then I find this thread. :alien: Thanks for the info!
 

dgorsett

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Your assumption is that a Ford dealer would have found the actual cause. I'd say the OP found the actual cause (based on his and many others experience) and a Ford dealer would have replaced the pump, tubing and reservoir and still not solved the problem
 

dgorsett

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Decades ago, Bronco II Manual trans: Chirping sound driving down road with clutch pedal released, stopped with slight pressure. Dealer said it needed clutch and throwout bearing, hundreds of 1984 dollars. Symptoms were reverse of throwout bearing. I researched shop manual, drilled a hole in the bell housing near a clutch fork pivot point dab of grease every 10k or so problem solved.

My boss had a similar Bronco with same problem. He paid for two clutch replacements. He came to me to show him where to drill the hole the third time.
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