Why does my Van overheat when running idle?

kruzntaco
60

Asked by kruzntaco May 04, 2012 at 07:55 PM about the 2005 Toyota Sienna XLE

Question type: Maintenance & Repair

When I run the A/C then park my van, it slowly starts to overheat. I see the temperature gauge go from the middle to hot. The air coming out of the vent also goes from cold to warm. When I put the van back in motion, it cools down and goes back to normal. Any ideas as to what is going on?

5 Answers

aztec626bf
7,465

Your fan is most likely not working. Check to see if the fan comes on when the engine gets up to temp. If not things to check are fan relay fan fuse and wiring and the fan itself.

4 out of 4 people think this is helpful.
kruzntaco
60

Why would the vents pump out cold air when the van is driving if the fan was not working? Is there a corolation there?

TonytheWoodsman
995

There are electrically operated radiator cooling fans to cool the radiator. If they don't come on, your van will overheat when it is not moving forward, to cause cool air to be forced through the radiator.

aztec626bf
7,465

We are talking about two different fans. The fan that cools the engine (cooling fan) and the fan that cools or warms the interior (blower motor). The cooling fan is the one I was referring to this one is thermostatically controlled. When the engine gets up to temp the cooling fan kicks in. The fan you are referring to is the one that controls interior temp. This one runs depending on user input.

1 out of 1 people think this is helpful.
Kurt Williams
30

I have the same problem but I do notice that both engine fans are on when its hot.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

Sienna
Looking for a Used Sienna in your area?
CarGurus has 22,839 nationwide Sienna listings starting at $1,999.
ZIP:

Search Toyota Sienna Questions

Toyota Sienna Experts

#1 Mik00000
Mik00000
Reputation 860
#2 Tom Demyan
Tom Demyan
Reputation 480
#3 Wayne Chomas
Wayne Chomas
Reputation 360
View All

Related Models For Sale

Used Honda Odyssey"
506 Great Deals out of 24,464 listings starting at $1,900
Used Toyota Highlander"
535 Great Deals out of 15,870 listings starting at $3,650
Used Chrysler Town & Country"
1,135 Great Deals out of 36,787 listings starting at $1,000
Used Nissan Quest"
104 Great Deals out of 3,112 listings starting at $2,000
Used Toyota Camry"
1,562 Great Deals out of 69,963 listings starting at $1,395
Used Dodge Grand Caravan"
947 Great Deals out of 32,212 listings starting at $1,000
Used Honda Pilot"
526 Great Deals out of 28,367 listings starting at $2,500
Used Toyota RAV4"
727 Great Deals out of 36,907 listings starting at $1,995
Used Toyota 4Runner"
314 Great Deals out of 12,317 listings starting at $2,490
Used Toyota Corolla"
1,186 Great Deals out of 54,286 listings starting at $995
Used Toyota Sequoia"
145 Great Deals out of 4,846 listings starting at $3,500
Used Kia Sedona"
132 Great Deals out of 5,635 listings starting at $1,995
Used Toyota Tacoma"
584 Great Deals out of 21,599 listings starting at $2,199
Used Honda Accord"
1,259 Great Deals out of 65,756 listings starting at $1,000
Used Nissan Pathfinder"
325 Great Deals out of 17,866 listings starting at $1,495

Used Cars For Sale

2010 Toyota Sienna XLE For Sale
9 Great Deals out of 154 listings starting at $14,000