how do you drain water jacket on 2008 sienna?

10

Asked by Jan 03, 2013 at 11:17 AM about the 2008 Toyota Sienna

Question type: Maintenance & Repair

Did radiator flush, but replaced with Prestone any color, not Toyota red.  Two weeks later thermostat is sticking.  Might be coincidence, but want to drain entire system and replace with one type of antifreeze.

10 Answers

if you pull the thermostat housing and the lower radiator hose that should do it.you can also stuff a rag in the thermostat opening and blow air in beside the rag to be positive.

1 of 1 people found this helpful.
98,085

You don't have to drain it all out - fill with water several times and flush it out. When the effluent runs clear, re-install your hoses, etc. for refill. Pour in half of the cooling system volume with straight anti freeze. Add distilled water to finish the fill. That way any water left in the block will be part of he 50/50 mixture.

2 of 2 people found this helpful.

even if you use water you should still stuff a rag in beside it to put some pressure behind or you could be leaving residual coolant in the heater core.

10

Use of air pressure makes sense, but are you sure that there is a lower hose on this model vehicle. I am not in front of the vehicle right now, but recall that both of the hoses are at the top, on opposite sides of the motor.

and you should never mix anti freeze in the block there is no way to be possitive you have a 50-50 mix and there is a range. to little water and it freezes at warmer temps, to much water and it freezes at warmer temps. and by warmer i still mean below 32 deg. fer.

they may both come out close to top side of the motor, but at the radiator on will be on top and one on the bottom. hope this helps.

1 of 1 people found this helpful.
98,085

Shaggy - where do you think the shade tree mechanic is going to get the volume of air to blow out a block? Do you think all thermostats are right up front where you get to them if someone had a unlimited supply of air? The anti freeze is going to be completely mixed by the time the engine warms up for the first time. It follows the theorem of random dispersal of liquids. I learned about it in my heat transfer and fluid flow classes I took to become a nuclear reactor operator. What's your experience?

read the back of the damn. bottle, if it is not mixed right it is going to freeze. and you are a nuclear reactor operator. i am 31 and been working on everyday drivers, race cars and mud trucks since i was 13 and if you read his question you would know that he is aready going to have the thermistat removed, meaning he has the accsess. and yea you may be right, he may not have the air flow, thats why i agreed with you about water, but he needs to pressurize it because he wants to eliminate all the residual fluid,that was his initial question, including the heater core. look if you want to argue further i am fine with that, but got to my garage and message me. there is no need to do this in some inocient guys question page.

10

Being a generally non-confrontational bloke, it does make me a bit uncomfortable. I will drain what I can, dilute and re-drain a few times. And blow out the water jacket as best I can (I have a high volume blower used to winterize swimming pool if i can get appropriate access). Presumably, I can put the thermostat housing back on without installing the thermostat and blow the air through the hose. Do I need to be concerned about flushing the heater core, or will that naturally drain with the rest?

1 of 1 people found this helpful.

i appologize for that, no need for it. being that the heater core is the lowest point in the system, i personaly would not rely on it naturally draining. Drain it blow it, eighther water or air. leaving the thnermostat out, also no gasket (it is going to leak), refill with water. runn for 3-4 mins. drain, install thermostat, put back together and refill with coolant. that will remove any residual coolant with out question.

Your Answer

Add photo

Related Questions

Sienna

Looking for a Used Sienna in your area?

CarGurus has 29,669 nationwide Sienna listings starting at $1,495.

ZIP:

Search Toyota Sienna Questions

Toyota Sienna Experts

#1 Mik00000
Mik00000
Reputation 1,590
#2 Tom Demyan
Tom Demyan
Reputation 1,180
#3 dandyoun
dandyoun
Reputation 890
View All

Related Models For Sale

Used Honda Odyssey
212 Great Deals out of 20,894 listings starting at $1,900
Used Toyota Highlander
361 Great Deals out of 26,016 listings starting at $2,800
Used Dodge Grand Caravan
165 Great Deals out of 26,543 listings starting at $2,300
Used Toyota Camry
1,098 Great Deals out of 90,895 listings starting at $1,599
Used Chrysler Town & Country
272 Great Deals out of 16,150 listings starting at $900
Used Honda Pilot
391 Great Deals out of 22,287 listings starting at $1,500
Used Kia Sedona
109 Great Deals out of 8,966 listings starting at $2,200
Used Nissan Quest
64 Great Deals out of 2,759 listings starting at $2,499
Used Toyota RAV4
890 Great Deals out of 67,248 listings starting at $1,990
Used Toyota 4Runner
259 Great Deals out of 19,034 listings starting at $2,500
Used Toyota Corolla
855 Great Deals out of 70,725 listings starting at $1,874
Used Toyota Sequoia
137 Great Deals out of 5,478 listings starting at $1,500
Used Toyota Tacoma
472 Great Deals out of 41,615 listings starting at $1,995
Used Chrysler Pacifica
49 Great Deals out of 27,731 listings starting at $1,900
Used Honda CR-V
922 Great Deals out of 59,302 listings starting at $1,990

Used Cars For Sale

2017 Toyota Sienna For Sale
19,762 listings starting at $23,617
2016 Toyota Sienna For Sale
10 Great Deals out of 1,043 listings starting at $20,250
2015 Toyota Sienna For Sale
38 Great Deals out of 1,448 listings starting at $14,500
2014 Toyota Sienna For Sale
43 Great Deals out of 1,794 listings starting at $12,629

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.