Weak Windshield Washer Fix - Toyota RAV4 Forums
4.3 General Discuss anything RAV4.3 related that doesn't fit in the categories below.

User Tag List

Reply
 
LinkBack Thread Tools
post #1 of 12 (permalink) Old 12-27-2016, 01:32 AM Thread Starter
Your Humble Administrator
Country: JuneBug's Flag is: United States
 
JuneBug's Avatar
 
Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 14,027
Thanks: 338
Thanked 1,881 Times in 1,346 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Weak Windshield Washer Fix

A while back I noticed my windshield washer on the passenger side seemed weak, while the one on the driver's side was too strong:



The first thing I thought of was the passenger side spray nozzle was clogged. The first thing most people suggest is poking a pin or needle into the nozzle, but DON'T DO IT, at least not on a late model RAV4. Our vehicles use a special nozzle that sprays a fan-shaped pattern onto the glass, and poking a pin or needle in there can damage them:



Determined to find the problem, I started digging. Following the washer hose along the hinge and into the hood, it disappears behind the hood insulation:



This is the hood insulation in place:



It has to be removed to troubleshoot the washer lines. The insulation is partially held in place by 2 metal hooks:



And also by 7 of these plastic fasteners:



The fasteners have to be carefully pried out. They can be quite stubborn, and when they do release, have a tendency to go flying into the nether reaches of the engine bay. I ended up breaking 4 of them:



Luckily, the local AutoZone had some for *only* $3 for a 2-pack. Probably would have been cheaper at the dealership:



After the insulation is removed, set it aside:



Here's what the washer tubing lines look like under that insulation:





As you can see, there is a T fitting that routes the main washer hose line into a separate line for driver's side and passenger side nozzles. But this thing is much more than a simple T fitting:



Not only does it regulate the pressure between the nozzles, it is also a check valve that prevents the washer fluid from draining back into the reservoir. If there is a significant delay between pulling the wash lever and the spray appearing, you may have a bad valve. In my case, swapping the 2 output lines caused a weak spray on the driver's side, so I knew it was the culprit. A quick trip to my dealership's part counter yielded a replacement--Part No. 85321-28020, Valve Sub Assy:



*Only* $20 AFTER I asked the parts guy for a discount! Yes, you can find it cheaper online, but after paying for shipping, who knows? It was then a simple task to replace the bad valve for this one. Then putting the rubber lines back into place. One line goes into the plastic clip and the other was secured to the plastic tab with blue tape:



Then it's time to put the insulation back. First, secure the insulation on the 2 metal tabs then push the 7 plastic fasteners in place. They go in a lot easier than they came out:



The final result--a nice even spray all over the windshield:


Help RAV4World members help you by providing your car's operating location in your profile page. Climate can cause a RAV4 in Dallas Wisconsin to experience a different set of issues when compared to the same model in Dallas Texas.
__________________

2008 Limited V6 2WD "The Silver Bullet"


JuneBug is offline  
The Following 4 Users Say Thank You to JuneBug For This Useful Post:
Badi (01-07-2017), DL175 (12-27-2016), DVS (12-29-2016), RTexasF (12-27-2016)
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old 12-27-2016, 02:07 AM
Senior Member
Country: Butts's Flag is: Canada
 
Join Date: Apr 2013
Location: BC
Posts: 223
Thanks: 190
Thanked 26 Times in 25 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
My 2009 Corolla have the same problem as you have. Same part. Part cost C$38 +14% tax at dealer and have to be order in. Too much for such a small part. I just drilled it and it works fine.

2016 RAV4 Hybrid XLE Mobius A dashcam, 3M door edge and headlight protection.
Butts is offline  
post #3 of 12 (permalink) Old 12-27-2016, 09:39 AM
Advanced Member
Country: DL175's Flag is: Canada
 
Join Date: May 2011
Location: Canada
Posts: 733
Thanks: 3
Thanked 109 Times in 89 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Good write up JuneBug. I am surprised that part can even go bad and bet most people will take it to the dealer to get it fixed at an inflated repair job.

I was just curious if you try blowing compressed air into the old part whether that would loosen any debris stuck inside. I would think it flows only in one direction from the washer pump and that is the end to blow from.

2009 RAV4 Sport V6 4WD
2005 RAV4 Base 4WD -sold
DL175 is offline  
 
post #4 of 12 (permalink) Old 12-27-2016, 06:33 PM
Advanced Member
Country: RTexasF's Flag is: United States
 
RTexasF's Avatar
 
Join Date: Jan 2008
Location: North TX above Dallas
Posts: 9,114
Thanks: 105
Thanked 654 Times in 542 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
Great post. I had no idea such a simple thing could be so complicated.

2008 Base V-6
2008 Limited V-6
Tow Prep Package & front wheel drive (both)
RTexasF is offline  
post #5 of 12 (permalink) Old 12-27-2016, 08:11 PM Thread Starter
Your Humble Administrator
Country: JuneBug's Flag is: United States
 
JuneBug's Avatar
 
Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 14,027
Thanks: 338
Thanked 1,881 Times in 1,346 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by DL175 View Post
Good write up JuneBug. I am surprised that part can even go bad and bet most people will take it to the dealer to get it fixed at an inflated repair job.

I was just curious if you try blowing compressed air into the old part whether that would loosen any debris stuck inside. I would think it flows only in one direction from the washer pump and that is the end to blow from.
I tried shooting high pressure water through it, didn't seem to make a difference. I might try the compressed air and see what happens.

Help RAV4World members help you by providing your car's operating location in your profile page. Climate can cause a RAV4 in Dallas Wisconsin to experience a different set of issues when compared to the same model in Dallas Texas.
__________________

2008 Limited V6 2WD "The Silver Bullet"


JuneBug is offline  
post #6 of 12 (permalink) Old 12-27-2016, 08:16 PM Thread Starter
Your Humble Administrator
Country: JuneBug's Flag is: United States
 
JuneBug's Avatar
 
Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 14,027
Thanks: 338
Thanked 1,881 Times in 1,346 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by RTexasF View Post
Great post. I had no idea such a simple thing could be so complicated.
Neither did I. I still don't know what function the hood insulation serves. After driving for 2 weeks with it removed, I didn't notice any increase in noise. Is it supposed to shield the hood from engine heat? It already gets pretty hot just sitting in the summer sun down here.

Help RAV4World members help you by providing your car's operating location in your profile page. Climate can cause a RAV4 in Dallas Wisconsin to experience a different set of issues when compared to the same model in Dallas Texas.
__________________

2008 Limited V6 2WD "The Silver Bullet"


JuneBug is offline  
post #7 of 12 (permalink) Old 12-28-2016, 03:24 PM
Advanced Member
Country: MrPulldown's Flag is: United States
 
MrPulldown's Avatar
 
Join Date: Jul 2012
Location: Truckee, Ca
Posts: 503
Thanks: 30
Thanked 41 Times in 38 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
could you have just installed a check valve and a T fitting?


2012 4wd i4 3rd row
MrPulldown is offline  
post #8 of 12 (permalink) Old 12-28-2016, 04:19 PM
Advanced Member
Country: vanib's Flag is: Canada
 
vanib's Avatar
 
Join Date: Sep 2011
Location: Ottawa, ON, Canada
Posts: 7,634
Thanks: 334
Thanked 629 Times in 563 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by JuneBug View Post
Neither did I. I still don't know what function the hood insulation serves. After driving for 2 weeks with it removed, I didn't notice any increase in noise. Is it supposed to shield the hood from engine heat? It already gets pretty hot just sitting in the summer sun down here.

Maybe it is for keeping the heat IN the bay for the winter months? Soundproofing?

2008 Base Rav4, 4 Cylinder, 4WD
My upgrades Allen Spare tire Bike Rack
Currently listening to "Marty Friedman" - Dragon's Kiss
vanib is offline  
post #9 of 12 (permalink) Old 12-28-2016, 04:35 PM
Advanced Member
Country: MrPulldown's Flag is: United States
 
MrPulldown's Avatar
 
Join Date: Jul 2012
Location: Truckee, Ca
Posts: 503
Thanks: 30
Thanked 41 Times in 38 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by vanib View Post
Maybe it is for keeping the heat IN the bay for the winter months? Soundproofing?
I have read that it is a fire blanket. Engine fire, clips melt. Insulation material drops and extinguishes flame.

2012 4wd i4 3rd row
MrPulldown is offline  
post #10 of 12 (permalink) Old 12-28-2016, 06:39 PM Thread Starter
Your Humble Administrator
Country: JuneBug's Flag is: United States
 
JuneBug's Avatar
 
Join Date: Nov 2008
Location: Baton Rouge, LA
Posts: 14,027
Thanks: 338
Thanked 1,881 Times in 1,346 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Garage
(Thread Starter)
Quote:
Originally Posted by MrPulldown View Post
could you have just installed a check valve and a T fitting?
Yeah, probably, but the passenger side would spray farther because that hose is shorter. I like to keep my Toyota as OEM as possible, but if that valve fails again, I will try your idea.

Help RAV4World members help you by providing your car's operating location in your profile page. Climate can cause a RAV4 in Dallas Wisconsin to experience a different set of issues when compared to the same model in Dallas Texas.
__________________

2008 Limited V6 2WD "The Silver Bullet"


JuneBug is offline  
Sponsored Links
Advertisement
 
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome