Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

2003 toyota Sequioa is overheating. I replaced the radiator…

2003 toyota Sequioa is overheating...
2003 toyota Sequioa is overheating. I replaced the radiator and thermostat . Not losing fluid anywhere , oil is clean. What's next?
Show More
Show Less
Ask Your Own Toyota Question
Answered in 4 minutes by:
7/21/2017
Jared D
Jared D, ASE Certified Technician
Category: Toyota
Satisfied Customers: 2,244
Experience: Shop Supervisor at County Fleet
Verified

Good morning,

The fan on your truck has a clutch that is supposed to allow the fan to free spin while moving at highway speeds, but run the fan full force a idle speeds. That fan clutch could have gone out. Does it seem like the vehicle overheats more when idling or when driving at highway speeds?

Ask Your Own Toyota Question
Customer reply replied 11 months ago
Not sure. My wife left the car on while she went into the store with AC on full blast on a hot day. Came out and AC was blowing hot. She drove it to my brothers (5 minutes) and parked it. When I went to fill it up with water, it just came pouring the the radiator. Replaced the radiator and thermostat, and here we are. Should I take it for a drive and see? Should I try running it without the thermostat in there? The top of the radiator is hot but the bottom is not. Same thing could be said about the upper and lower radiator hose, what's up with that?

I'd probably drive it a little and see what it does. It sounds like coolant might not be circulating if the top is hot and the bottom is cold. I've seen a handful of these engine have bad water pumps that will no longer circulate the coolant. If only the top is hot that means it's not flowing like it should and you already eliminated the thermostat as a cause for that.

Ask Your Own Toyota Question
Customer reply replied 11 months ago
Are we still talking ? Sorry, this is the first time I've tried out justanswers.

I'll be here for as long as you need for follow-up.

I come and go- I don't work directly for just answer- I run a mechanic shop- so I'm not always at my computer, but I'll keep checking in to see how the testing goes.

Ask Your Own Toyota Question
Customer reply replied 11 months ago
Thanks, I'm going to take it for a drive and let you know. Any chance I bought a faulty thermostat? Where is the water pump in this vehicle? How accessible is it?

It might be faulty. That's not very common though.

The water pump is below the thermostat housing.

Here is how you replace it:

Ask Your Own Toyota Question
Customer reply replied 11 months ago
Thanks. I drove it, it got hot fast. I'm going to try running it without the thermostat. Water pump isn't dripping or grinding at all . Anything else it could be?

That's a good plan. Pull the thermostat and see it it improves. If not I would pull the water pump. Usually the way they fail is the turbine blades on the pump disintegrate and no longer move the coolant.

If the water pump looks ok then the only other cause of an overheat would be a headgasket issue. A blown or leaking headgasket can cause an overheat in about 5 minutes.

Ask Your Own Toyota Question

I just remembered that the water pump is behind the timing belt on this engine. It's a good idea to replace the timing belt and components while you are in there.

Also, with the engine off try spinning the fan by hand. If it spins freely then the fan clutch is probably bad and might be causing the problem.

Ask Your Own Toyota Question
Customer reply replied 11 months ago
Thank you. I've got an appointment to get to, and will try those things out as soon as I can get to it. Is it possible that it's the head gasket if the oil and water are perfect? Also, what direction does the water flow? Upper radiator to engine through thermostat then lower radiator? Is that right?

It's possible to have a head gasket leak or a cracked head and not see and oil in the coolant or coolant in the oil.

It should flow from the top to the bottom. In other words the lower hose feeds coolant into the engine.

Jared D
Jared D, ASE Certified Technician
Category: Toyota
Satisfied Customers: 2,244
Experience: Shop Supervisor at County Fleet
Verified
Jared D and 87 other Toyota Specialists are ready to help you
Ask your own question now
Customer reply replied 11 months ago
Ok, well it seems as if the lower hose is not feeding coolant to the engine, and here is why I say that. I pulled the thermostat, and ran the vehicle on idle without AC on. After about 10 minutes, water was boiling out the reservoir, and the u
Customer reply replied 11 months ago
Sorry about that... The upper radiator hose as well as the top of the radiator was "burn you" hot, while the lower radiator hose was cool to the touch, as was the bottom of the radiator. It should also be added that there is a lot of squeeking coming from the from of the engine. At this point, it seems evident to you that the problem is the -------------------?
Customer reply replied 11 months ago
Ok, I also turned the fan by hand with the engine off. It didn't free spin, but I am able to turn in with minimal effort. I'm guessing that if the fan clutch is bad, it still doesn't explain the lack of circulation in the engine though.
Customer reply replied 11 months ago
Praise The Lord!!!! It's fixed! Thank you for all of your help!

Sorry, I was out working on stuff all day.

I'm glad you got it sorted out. What did it end up being?

Ask Your Own Toyota Question
Customer reply replied 11 months ago
There was an obstruction inside if the lower radiator hose. The obstruction was removed, and all is well. Should I be concerned about the fan?

How weird. It sounds like you got it nailed down.

Ask Your Own Toyota Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a toyota mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Jared D Your Own Question
Jared D
Jared D
Jared D, ASE Certified Technician
Category: Toyota
Satisfied Customers: 2,244
2,244 Satisfied Customers
Experience: Shop Supervisor at County Fleet

Jared D is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

THANK YOU, THANK YOU, THANK YOU!! I've got my baby back. Tomorrow I will get a tank of high octane, remove the top, go for a long long ride and enjoy my car. THANK YOU!

JugheadUSA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Chris (aka-Moose)

Chris (aka-Moose)

Auto Technician

1,001 satisfied customers

16 years of experience

Marty

Marty

ASE Certified Technician

180 satisfied customers

ASE & Bosch Master Tech. 30 years experience.

Amedee

Amedee

Toyota Technician

1,229 satisfied customers

ASE certified tech advanced level specialist. Wisconsin certified emissions state inspector

Anthony

Anthony

ASE Certified Technician

401 satisfied customers

ASE Master Automobile Technician with over 20 years exp. in this field.

Richard

Richard

ASE Certified Technician

9 satisfied customers

Toyota tech. ASE Certified Technician

Skyvisions

Skyvisions

ASE Certified Technician

12,737 satisfied customers

Toyota Master Diagnostic

Genchi Genbutsu

Genchi Genbutsu

Toyota Master Technician

3,761 satisfied customers

Toyota Certified Master Diagnostic Technician, ASE Master Technician with L1 Advanced Engine

< Previous | Next >

Related Toyota Questions
Toyota sienna: overheating..steam coming off from the upper water hose
Hi, I have a toyota sienna 2000. The enginge was overheating and I saw steam coming off from the upper water hose. The heater was cold. Could you please tell me what is needed to fix that? Thank you.… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
2006 rav4. Timing belt or timing chain? Whats timing belt
2006 rav4. Timing belt or timing chain? Whats timing belt life… read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 satisfied customers
1994 t100 3vze Water is leaking from the front of engine after
1994 t100 3vze: Water is leaking from the front of engine after truck has been driven and warmed to operating temp. AND only after truck has been stopped for 1 to 2 hours. I'm thinking by-pass hose or… read more
Jim B
Jim B
AAA Approved Shop Owner
High School or GED
1,147 satisfied customers
I'm replacing the timing belt in my 2002 Toyota v6 but on
I'm replacing the timing belt in my 2002 Toyota v6 but on the 3rd … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
Oh, I was search for water pump repairs and you page popped
Oh, I was search for water pump repairs and you page popped up. Sorry about that. … read more
Chris (aka-Moose)
Chris (aka-Moose)
Auto Technician
Vocational, Technical or Trade School
1,001 satisfied customers
I'm changing the timing belt on a 2004 Toyota Sienna. For
I'm changing the timing belt on a 2004 Toyota Sienna. For the life of me I can't locate the timing marks for the rear camshaft pulley... and I'm no mechanical dummy! Thoughts? … read more
Chris (aka-Moose)
Chris (aka-Moose)
Auto Technician
Vocational, Technical or Trade School
1,001 satisfied customers
B2799 cranks but wont start? Put a water pump on it
b2799 cranks but wont start ? Put a water pump on it yesterday but it started fine yesterday ? ( had neg term disconnected during pump replacement )… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
I just performed a timing belt and water pump replacement on
I just performed a timing belt and water pump replacement on a Toyota Tacoma 4.7 liter V6 the year is 2006 the truck runs great but it has a slight shake to it not a misfire also I keep getting the en… read more
Mechanic01
Mechanic01
2,753 satisfied customers
I need to repair the radiator and change the timing belt on
Hi Chris, I need to repair the radiator and change the timing belt on my toyota hiace 172L with 5L engine. ... So I'm looking for a repair manual for the above. … read more
indy-tech
indy-tech
Shop owner, technician
Vocational, Technical or Trade Scho
11 satisfied customers
I'm following the question on timing belt replacement. My
I'm following the question on timing belt replacement. My Lexus RX400h, 2006, has 203,000 miles. Timing belt was replaced at 93,000. At 180,000 my mechanic recommended letting it go for a while. Now a… read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
97 satisfied customers
I changed the timing belt, water pump and oil pump. Replaced
I changed the timing belt, water pump and oil pump. Replaced all the fluids. Ran truck last nite, everything ok. Tried to start this morning and nothing but crank. … read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
Just did a new timing belt water pump and tensioners and it
just did a new timing belt water pump and tensioners and it is jumping teeth … read more
baddad1
baddad1
technician
High School or GED
5 satisfied customers
I just had my timing belt, tensioner, pulleys and water pump
I just had my timing belt, tensioner, pulleys and water pump replaced. Last night, I flushed coolant replaced radiator and thermostat. Now I notice a whine from the front of the engine. Screwdriver st… read more
TIM MOHR
TIM MOHR
SHOP OWNER
Master's Degree
8,037 satisfied customers
1996 toyota tacoma replaced radiator, water pump, thermostat
1996 toyota tacoma replaced radiator, water pump, thermostat 3 times, flushed heater core I get no heat inside cab… read more
roy
roy
Associate Degree
3 satisfied customers
I just change my timing belt water pump spark plugs and fuel
I just change my timing belt water pump spark plugs and fuel injectors. I try starting it after and it's not turning over … read more
Mechanic01
Mechanic01
2,753 satisfied customers
2000 Tundra: old one was leaking..new radiator in and now it overheats
I have a 2000 Tundra with 197k miles on it. I just replaced the radiator since the old one was leaking. I put the new radiator in and now it overheats. I replaced the fan clutch since I hear they comm… read more
Skyvisions
Skyvisions
ASE Certified Technician
High School or GED
12,737 satisfied customers
1996 toyota land cruiser timing chain setting
When I replace the power steering i'll need to know the setting for the timing chain… read more
VirtualWrench (L J)
VirtualWrench (L J)
Owner of LJ Auto Repair 37 years
Associate Degree
38 satisfied customers
1989 Toyota: 4x4..a 3.0L V6..timing belt..water pump
I have a 1989 Toyota 4x4 pick-up with a 3.0L V6 and an Automatic transmission. The problem is that it over heats, I''ve changed the timing belt because it was old and streched ( so I thought it was ju… read more
Toyotatech
Toyotatech
Service Manager
Associate Degree
58 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x