Toyota

Have Toyota Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

I have an '06 Corolla with very little heat coming into the…

Customer Question
I have an '06 Corolla...
I have an '06 Corolla with very little heat coming into the cabin. Replaced thermostat and no improvement. Flushed heat core and saw good flow but it was no help. The interior controls all seem to work but I have not been able to find a heater control valve.
Submitted: 2 years ago.Category: Toyota
Show More
Show Less
Ask Your Own Toyota Question
Answered in 11 minutes by:
2/15/2016
Toyota Mechanic: roy, import/domestic specialest replied 2 years ago
roy
roy, import/domestic specialest
Category: Toyota
Satisfied Customers: 7,448
Experience: ASE master tech for 40 years
Verified

good evening my name is ***** ***** I will assist

are both heater hoses hot under the hood???

Roy

Ask Your Own Toyota Question
Customer reply replied 2 years ago
I get a slight amount of heat with the heat control on its highest setting and noticeably less heat with it positioned on the cold setting. The blender control cable and lever seem to work and I can hear the door hit both extreme positions when I quickly move the control to each extreme.
Customer reply replied 2 years ago
I can not locate a heater control valve either under the hood or under the dash.
Toyota Mechanic: roy, import/domestic specialest replied 2 years ago

there is no heater control valve.

both hoses are the same temp under the hood???

Roy

Ask Your Own Toyota Question
Customer reply replied 2 years ago
They seem to be very close to the same temp when touching them with the lower one maybe slightly lower in temp.
Toyota Mechanic: roy, import/domestic specialest replied 2 years ago

if all controls inside are working and you can hear the doors work back and forth, then the heater core may still be the issue. I would remove the hoses and use a garden hose to run water through both sides of the core to force any dirt out that may be preventing proper circulation. even though you see circulation it does not mean the core is clear.

Roy

Ask Your Own Toyota Question
Customer reply replied 2 years ago
I ran water through it yesterday. It was very clean - nothing dark as the color started with green anti freeze and changed to clear water and it flowed easily. From what I can see the entire system is very clean so I didn't expect a clog but I flushed it just to be sure.
Toyota Mechanic: roy, import/domestic specialest replied 2 years ago

ok, I still think your issue is at the core.

I will opt out and see if anybody else has any idea

Roy

Ask Your Own Toyota Question
Toyota Mechanic: Skyvisions, ASE Certified Technician replied 2 years ago
Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,922
Experience: Toyota Master Diagnostic
Verified

We need to confirm that the water pump is in fact pushing water through the system. You can do this one of two ways get the engine up to operating temperature without the radiator cap on and see if coolant is being pushed into the upper tank and flowing through the radiator. The ideal way to do this is to remove the thermostat install just the gasket then hold the engine RPM at 2000 RPM and see if water is being pushed through the radiator very quickly. If it is the water pump can be ruled out. At that point reinstall the thermostat I know you run water through the heater core but 99% of the time that will not flush anything on the heater inside the vehicle. More than likely going to find that the heater core is clogged on most of the tubes. Even though you have flow it's only going to a few tubes versus the entire heater core. You will need to replace the heater core. If you're getting flow since the system is full of water carefully remove the hoses from the heater core, Then start the engine up and see if water is pumping through the heater hose going to the heater core. If it is then this rules out any type of restriction in the hoses or the block itself. That brings us back to the heater core again and it will need replaced.

Ask Your Own Toyota Question
Customer reply replied 2 years ago
Thanks for the suggestions. I removed the thermostat and reconnected the lower radiator hose to the engine block. Then I disconnected the upper radiator hose at the radiator and filled the radiator with water until it ran out of the upper radiator hose opening on the radiator. I started the car and only saw a small amount (less than half a cup) come out of the upper radiator hose when I let the car idle at approx 1500 rpm for one minute. I then ran it at 2000 rpm and did not get any more water to come out of the upper radiator hose.
Toyota Mechanic: Skyvisions, ASE Certified Technician replied 2 years ago

You need to make sure that you have no air pockets in the block what I need you to do is fill the engine up completely without the thermostat and all the hoses connected. Hold the engine RPM at 2000 RPM you should see water flowing through the upper radiator tank when you look into the filler neck. If you try and pinch the upper radiator hose at that point you will feel the water rushing through the hose and it will surge out the upper radiator tank filler neck when you release the upper radiator hose.

Ask Your Own Toyota Question
Customer reply replied 2 years ago
When operating this vehicle prior to removing the thermostat today, the temperature was always at its normal position on the temp gauge once the engine got up to temperature. I am wondering if that temperature should have been moving up and down on the gauge rather than being rock solid on the gauge if the water pump is not pushing fluid through the system.
Toyota Mechanic: Skyvisions, ASE Certified Technician replied 2 years ago

If the impeller on the water pump was bad the engine would be overheating. It is not likely that the water pump is the problem. With the thermostat in the temperature gauge should rise up to about midpoint within five or 10 minutes of driving. The thermostat out the temperature gauge will be stone cold because there is nothing to slow the coolant down in the block.

Ask Your Own Toyota Question
Customer reply replied 2 years ago
I no longer suspect it is the water pump anymore as I removed it and it rotates smoothly and the impeller is solidly attached to the shaft and it is not damaged in any obvious way.
The temperature gauge does rise up to the midpoint with in 5 to 10 minutes of driving and stays in the same spot during all further driving with the thermostat in place.
I did not check the temp gauge when I had the thermostat out as I expected it to be stone cold as you suggest.
Should I check to see if there is good water flow to the heater core? I expect I should remove the thermostat again to run this test safely with cold fluid.
Toyota Mechanic: Skyvisions, ASE Certified Technician replied 2 years ago

Yes on the flow from the hoses to the heater core but have the tstat in it will push fluid that way to the hoses.

Ask Your Own Toyota Question
Customer reply replied 2 years ago
Turns out that I had trapped air in my system and once I "burped" it the heat started working.
Toyota Mechanic: Skyvisions, ASE Certified Technician replied 2 years ago

That is good to hear. Please do not forget to rate the assistance that I provided you at three or higher.

Ask Your Own Toyota Question
Was this answer helpful?
Ask Skyvisions Your Own Question
Skyvisions
Skyvisions
Skyvisions, ASE Certified Technician
Category: Toyota
Satisfied Customers: 14,922
14,922 Satisfied Customers
Experience: Toyota Master Diagnostic

Skyvisions 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

14,922 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
Where is the thermostat on a 93 Toyota corolla
Where is the thermostat on a 93 Toyota corolla… read more
RLROOT
RLROOT
Vocational, Technical or Trade Scho
2,784 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
Need an engine for 2009 toyota corolla. Auto trains with 80K
Need an engine for 2009 toyota corolla JA: How many miles are on the car? Is it an automatic or a manual transmission? Customer: Auto trains with 80K miles JA: Are you fixing your Corolla yourself? Wh… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
2009 corolla was having issues with rough idle. today it
2009 corolla was having issues with rough idle. today it starting missing as well. SES light flashing with TCF off and traction control light coming on as well. … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
Pre Collison malfunction. 2017 corolla. Turning it off it
Pre Collison malfunction JA: What is the model/year of your Toyota? Customer: 2017 corolla JA: Are you fixing your Corolla yourself? What have you tried so far? Customer: Turning it off it won't move … read more
Peter Bagley
Peter Bagley
master technition
Vocational, Technical or Trade School
1,198 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
14,922 satisfied customers
WHERE IS COOLING SENSOR ON 1998 TOYOTA COROLLA. COOLING
WHERE IS COOLING SENSOR ON 1998 TOYOTA COROLLA JA: Which particular sensor are you asking about? And have any trouble codes been triggered? Customer: COOLING SENSOR JA: Are you fixing your Corolla you… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
I have a 2015 Toyota Corolla ECO, we had a engine issue and
I have a 2015 Toyota Corolla ECO, we had a engine issue and ended up swapping it for a used engine with 20,000 miles we have our own service faculty at the dealership where the work was preformed. Aft… read more
Skyvisions
Skyvisions
ASE Certified Technician
14,922 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
2,609 satisfied customers
Mine is a 96 rav4. I'm trying to rempove the water pump and
mine is a 96 rav4 . I'm trying to rempove the water pump and I can't figure out how to access the 2 nuts holding the bypass pipe onto the water pump. … read more
Skyvisions
Skyvisions
ASE Certified Technician
14,922 satisfied customers
Replaced timing chain on 1.8 engine 2009 corolla. no
replaced timing chain on 1.8 engine 2009 corolla. no compression. head gasket replace. … read more
roy
roy
import/domestic specialest
7,448 satisfied customers
Toyota Corolla 2009 model. Check engine and VSC lamp on.
Toyota Corolla 2009 model. Check engine and VSC lamp on. … read more
Skyvisions
Skyvisions
ASE Certified Technician
14,922 satisfied customers
Corolla S. 2014 corolla s. The stereo or head unit went out
2014 corolla s. The stereo or head unit went out on it. I looked at fuses and couldn't see any blown fuses so I ordered a replacement head unit from Pioneer. Installed it today and no power to the head unit. I get no voltage on 3 fuses under the hood for the radio, dome and ECU B fuses...all other fuses I can get voltage. … read more
Chris (aka-Moose)
Chris (aka-Moose)
Auto Technician
Vocational, Technical or Trade School
1,001 satisfied customers
2007 corolla s code p0012 engine and oil pressure light on
2007 corolla s code p0012 engine and oil pressure light on replaced oil control valve also the cam position sensor CHANGED OIL lights still on … read more
Toyota Service
Toyota Service
Toyota Dealership Service & CR Manager
1,344 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
import/domestic specialest
7,448 satisfied customers
Probably a bad ICE water pump. It overheated, according to
yes, it overheated, according to the diagnostics on the dash/console. last oil change was about 2k mi ago … read more
ted ritter
ted ritter
Team Leader/toyota master tech/retired
High School or GED
2,692 satisfied customers
1989 Toyota pickup. 22RE engine. Water pump/alternator belt
1989 Toyota pickup. 22RE engine. Water pump/alternator belt keeps breaking. Something is locking up but after the belt is broken everthing turns fine. How can I tell if it is water pump or alternator?… read more
Todd M
Todd M
Owner
ASE Certification
1,770 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