Toyota Avalon over heating

Asked by Feb 16, 2017 at 06:59 PM about the 2000 Toyota Avalon XL

Question type: Maintenance & Repair

I have a Toyota Avalon 2000, with 200,000 miles. I
have never had an issue with over heating, car is
maintained up to date. A few days ago I drove to
work just fine, but when I was driving home my
brakes felt like they were almost catching. A few
days previous to this my ABS, VSC, and VSC off
light continued to come on and stay on until the
car was turned off and restarted. Anyways, my
brakes felt weird but it was driving okay, drove
about 30 min. I let the car sit awhile then started
driving again, it was at driving temp and staying
like normal, I checked the temp and it was fine,
about a minute later I smelled coolant and the car
was almost at the red it was so hot ( extremely
quick.) The radiator was old and blew because of
the heat (plastic radiator) I assumed my radiator
was cracked, so I replaced it thinking that's why it
was over heating. When the car idles it does not
over heat, you can idle it for as long as 30 min and
the temp won't change, AS SOON as you start
driving within a block it's almost red hot. The water
pump seems to be working, from what I can tell, so
I replaced the thermostat thinking it was bad and
not letting the coolant flow. The car still over heats.
I noticed my radiator fans werent turning on
correctly, when I turn AC on they barely try to turn
or one will turn but the other doesnt. I replaced the
radiator fan sensor thinking that was the issue but
of course it was not. So now I have replaced
almost the whole cooling system, but I'm still
having problems. Any ideas on anything else it
could be besides a water pump? Or any
confirmation that it is the water pump? I didn't have
any overheating issues before, and I didn't notice
any leaks (like the water pump) the only reason I
think water pump is the heater core hoses aren't
getting hot but the radiator/engine is. But then
again, my car only overy heats when driving.
Please help me I am desperate to figure it out I
thought it was going to be an easy fix.

12 Answers

73,055

You need to purge the air out of the cooling system. And the water pump impeller could be bad. Try purging the air out first. Check this out on how too.....https://youtu.be/gcCkGiaWN-I

73,055

I just hope you have not damaged the head gasket.

It's a V6 engine, I was told I have to use a vacuum pump to purge the air out? Nothing is leaking so I hope the gasket is okay too. :/

73,055

There are some vehicles that are hard to bleed air from, and there are some sort of machine some garages have to do this. One thing nobody mentions when doing this is to have the front end up on an incline or raised up since the air bubbles float, the air finds it way out easier.

I'll try to bleed it out, I'll tell you what happens. Any ideas on the radiator fans?

73,055

Never the less your heater hoses are cool which tells me there is air in the cooling system.

1 of 1 people found this helpful.

Wow, you make sense. This is like the only thing that has actually made sense, and has all the problems linked.

73,055

The fans, it may be because of the air in the cooling system is messing with the engine temperature sensor, or possible relay.

I replaced the sensor, that wasn't it unless the air in the system is screwing it up. Checked the fuses, they seem okay.

73,055

If there is not a continuous flow of coolant across the temp. sensor, it reads incorrectly. Thus the air in the cooling system. When bleeding out the cooling system make sure the heater is set on hot also.

1 of 1 people found this helpful.

Question. My Toyata Avalon XLS 2000 with about 150000 Miles Get over Heat after Driving Few Miles,Coolant Evaporates,My repair shop says needs new Radiator

73,055

There must be a small leak in the radiator due to it being ripe, or plugged up. It must be obvious to the repair shop to see that the radiator should be replaced. If the engine had ben overheating, there would be concerns of a bad head gasket also. You would notice white smoke from the exhaust with a sweet smell to it, or coolant getting into the engine oil if it where a head gasket. One could do a compression test on the engine to determine if there where a problem with the head gasket.

Your Answer

Avalon

Looking for a Used Avalon in your area?

CarGurus has 126 nationwide Avalon listings starting at $5,900.

Postal Code:

Toyota Avalon Experts

  • #1
    Tom Demyan
    Reputation
    1,780
  • #2
    lilfrosty357
    Reputation
    900
  • #3
    dandyoun
    Reputation
    680
View All

Related Models For Sale

Used Toyota Camry
42 Great Deals out of 1,590 listings starting at $1,700
Used Honda Accord
73 Great Deals out of 1,119 listings starting at $748
Used Toyota Highlander
21 Great Deals out of 606 listings starting at $2,900
Used Toyota Corolla
171 Great Deals out of 3,431 listings starting at $2,394
Used Nissan Maxima
31 Great Deals out of 325 listings starting at $3,976
Used Toyota RAV4
71 Great Deals out of 2,928 listings starting at $2,999
Used Nissan Altima
69 Great Deals out of 1,280 listings starting at $2,750
Used Toyota 4Runner
7 Great Deals out of 435 listings starting at $5,200
Used Honda Civic
317 Great Deals out of 4,131 listings starting at $1,494
Used Chevrolet Impala
61 Great Deals out of 932 listings starting at $1,900
Used Hyundai Sonata
43 Great Deals out of 1,290 listings starting at $1,781

Used Cars For Sale

2018 Toyota Avalon For Sale
18 listings starting at $42,389
2017 Toyota Avalon For Sale
19 listings starting at $35,716
2016 Toyota Avalon For Sale
15 listings starting at $34,395
2015 Toyota Avalon For Sale
9 listings starting at $30,487
2014 Toyota Avalon For Sale
16 listings starting at $23,995

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.