Dodge

Dodge Repair Questions? Ask a Mechanic for Answers ASAP

Ask an Expert,
Get an Answer ASAP!

Heater isn’t warm. I have flow through the heater core but…

Customer Question
Heater isn’t warm. I...

Heater isn’t warm. I have flow through the heater core but no heat

Mechanic's Assistant: Have you checked to make sure the thermostat is working? What about the coolant level?

Coolant level is good. If the engine warms up and the level drops in the radiator than the t stat opened right?

Mechanic's Assistant: What is the model/year of your Dodge?

2001 Dodge Ram 1500 5.9

Mechanic's Assistant: Are you fixing your Ram 1500 yourself? What have you tried so far?

Yes. I have kind of flushed the core with an air compressor and coolant definantly flows through it. How do I know if the water pump is working?

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

The actuator for the blend door looks like it is working...

Submitted: 7 months ago.Category: Dodge
Show More
Show Less
Ask Your Own Dodge Question
Answered in 2 minutes by:
1/18/2018
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago
Gabriel Grey
Gabriel Grey, Auto Service Technician
Category: Dodge
Satisfied Customers: 451
Experience: Master Service Technician
Verified

Good afternoon, I hope you are doing great. My name is***** would be happy to assist you with this today.

It sounds like you have checked all the basics, and from what you have described I also think it may be a thermostat or pump issue. Can you check and make sure the upper/lower radiator hoses are both the same temperature? That will let us know if the t-stat is opening/closing

Ask Your Own Dodge Question
Customer reply replied 7 months ago
The lower is cool. But it’s 20 degrees out and truck was running maybe 15 mins
Customer reply replied 7 months ago
Are we still connected?
Customer reply replied 7 months ago
Hello?????
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago

Sorry for the delay, my little boy got a bit crazy so I had to go help out. Have you left the truck running to warm it up?

Ask Your Own Dodge Question
Customer reply replied 7 months ago
Sorry no. I turned it off a while ago and came inside
Customer reply replied 7 months ago
I will start it again if it stays cool what’s the issue?
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago

Yeah let's get it to operating temperature and recheck it. If it stays cool that means the thermostat is stuck open and not allowing the system to build up the proper temperature

Ask Your Own Dodge Question
Customer reply replied 7 months ago
I have hot going into the heater core but Luke warm coming out. Is there any restrictions in the heater core? Like a control valve ? Or is the temp control in the cab all done by a blend door?
Customer reply replied 7 months ago
Could a partial restriction in the heater core be the problem? Otherwise I am thinking it must have to do with weak circulation or no circulation but I would think that the engine would run hot if the circulation was bad.
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago

Ok if it is hot coming in then there is a restriction somewhere in the heater core assembly. It is a straight in/out set up at the heater core, so if the temperature is dropping there it is due a restriction

Ask Your Own Dodge Question
Customer reply replied 7 months ago
Ok thanks. I am guessing if there is some flow through it that I should be able to flush it out without replacing it? Any concoctions that you know of that might “dissolve” a restriction?
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago

If compressed air didn't work then you will want to use pressurized water if possible, this usually takes out the gunk. If it is a severe restriction then you can run some approved degreasers with the engine running, this will help warm up and dissolve whatever remains, but it will require flushing the coolant afterwards

Ask Your Own Dodge Question
Customer reply replied 7 months ago
Last question since I just don’t understand how the blend door can change the air temp. Can the temp be dropped in the heater core by the outside cold air but not be directed into the cabin? Does the blend door redirect the warm air or ?
Customer reply replied 7 months ago
my upper radiator hose is hot. Bottom is cool. Cap is still cold too. I guess what I am thinking is if the water pump isn’t circulating proper will it not have enough pressure to push water through the core?
Dodge Mechanic: Gabriel Grey, Auto Service Technician replied 7 months ago

The blend door directs air from or away from the heater core, so usual heat issues are a result of the actuator, but since you have verified your's is moving, that will not be the issue. If it was a waterpump issue it would be overheating the truck under a load, have you experienced any overheating lately?

Ask Your Own Dodge Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a dodge mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Gabriel Grey Your Own Question
Gabriel Grey
Gabriel Grey
Gabriel Grey, Auto Service Technician
Category: Dodge
Satisfied Customers: 451
451 Satisfied Customers
Experience: Master Service Technician

Gabriel Grey 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:

I AM VERY GLAD THAT I TOOK A CHANCE ON YOUR PROBLEM SOLVING SKILLS. I WAS SUCCESSFUL IN REPLACING THE FUEL PUMP. MY TRUCK RUNS LIKE A CLOCK. IT RUNS LIKE THE DAY I BOUGHT IT. NO LUNGING FORWARD, THE TURBO REACTS THE SECOND I STOMP ON THE GAS, AND IT HAS A LOT MORE POWER AND EVEN SOUNDS BETTER TO ME. IT SAVED ABOUT $500.00 BY DOING THE WORK MYSELF. I GIVE YOU ALL THE CREDIT FOR YOUR DIAGNOSING THE PROBLEM, JUST FROM THE SYMPTONS I GAVE YOU OVER THE e MAIL. I WILL USE YOUR WEB SITE AGAIN AND REFER MY FRIENDS. THANKS SO MUCH FOR THE HELP.

TOM WHITTAKERUSA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

Rev. Jerry BaysingerHolts Summit, Mo

I recently asked a question about my 2005 dodge ram, and I just wanted to let my Expert know that he hit the nail squarely on the head with his answer. I wanted to thank him again.

GregPittsburgh, PA

Just a quick line to tell you how pleased I am to have my brakes working properly after all this time. Your answer was what I needed. I would certainly recommend you highly. God bless!

JerryHolts Summit, MO

I was skeptical at first but thought I'd give it a try. I was pleasantly surprised. Your site actually is a quality service that I would recommend to others in a heartbeat.

StanSayre, PA

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

< Previous | Next >

Meet the Experts:

Jerry

Jerry

Master Mechanic

1,754 satisfied customers

ASE Master tech, 30 years exp. troubleshooter, driveability tech

Chris

Chris

Shop Foreman

7,095 satisfied customers

Dodge/Cummins and Chrysler Certified Master Tech

Mopar Certified

Mopar Certified

Dodge Technician

6,073 satisfied customers

24 Year Chrysler/Dodge Certified Specialist

moparfl

moparfl

ASE Certified Technician

3,292 satisfied customers

ASE Master Tech Gold level Chrysler Status 30 years dealership exp

Dodgerench

Dodgerench

ASE Certified Technician

2,822 satisfied customers

30+ years Dodge/Chrysler exp., ASE Master with L1 certification. Driveability/ combustion specialist

Tim Mohr

Tim Mohr

ASE MASTER TECH

2,363 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

Don - Mo Lurch

Don - Mo Lurch

Aftermarket & Factory Electronics

1,593 satisfied customers

Cert. Dodge & Chrysler Warnty, Heavy Line Mech, Mobile Electronics. Sales, Installation & Repair for 30 years

< Previous | Next >

Related Dodge Questions
I have a dodge ram 02 and the heat is not working correctly
I have a dodge ram 02 and the heat is not working correctly it warms up but not that hot. … read more
kwiggins29059
kwiggins29059
Associate Degree
219 satisfied customers
I have a 06 ram 5.7 hemi. Replaced every thing on cooling
I have a 06 ram 5.7 hemi. Replaced every thing on cooling system because of no heat to drivers floor vent. Heater core , actuators , blend doors ,rad cap ,thermostat etc. I have purged the system 3 ti… read more
Brad
Brad
Technician at Dodge Dealership
Vocational, Technical or Trade Scho
12 satisfied customers
Ram 1500 Laramie: I have a 2003 dodge ram 1500, 5.7L. Heater
I have a 2003 dodge ram 1500, 5.7L. Heater blows cold. Have replaced heater core, heater hoses, water pump and thermostat. Also verified all blend and mode doors and actuators are working. Truck warms… read more
fordguy4u
fordguy4u
Automotive Tech
Vocational, Technical or Trade Scho
70 satisfied customers
dodge ram 1500 5.9 liter: Lower radiator hose not getting hot
Lower radiator hose not getting hot 99 dodge ram 1500 5.9 liter replaced thermostat, radiator and flushed heater core. Top hose and heater hoses are hot.Any ideas????… read more
conquest.tsi
conquest.tsi
High School or GED
805 satisfied customers
ram 1500 pu: 99 dodge ram 1500 5.9 - couple of issues blower
99 dodge ram 1500 5.9 - couple of issues blower only works on high and the heat takes a very long time to get hot and doesn't get as hot as it use to… read more
DODGETECH2875
DODGETECH2875
Vocational, Technical or Trade Scho
1,004 satisfied customers
I have a 03 dodge 3500 w/5.9 HO cummings. i have an overheat
I have a '03 dodge 3500 w/5.9 HO cummings. i have an overheat problem and the heater does not blow hot air. I have replaced water pump,thermostat and both heater hoses. heater hoses were the last to b… read more
Brad
Brad
Technician at Dodge Dealership
Vocational, Technical or Trade Scho
12 satisfied customers
Ram 1500: I have a 2004 Dodge Ram that only blows warm air.
I have a 2004 Dodge Ram that only blows warm air. Have fush cooloing system. Then flushed heater core only. First with water then couple of weeks later with air. Only took a couple of pounds of air to… read more
Chris (aka - Moose)
Chris (aka - Moose)
Vocational, Technical or Trade Scho
108 satisfied customers
Ram 1500: I have a 2001 dodge ram 1500 5.9 gas job.I am having
I have a 2001 dodge ram 1500 5.9 gas job.I am having problems with the temp gauge moving to 210 degrees when I really put my foot in it then it drops back down to 195 when I let off?I had the radiator… read more
carguyjosh
carguyjosh
Associate Degree
1,120 satisfied customers
DODGE RAM 1500: ANTIFREEZE..TEMP GAGE READS MID RANGE, WHAT..HEATER
I HAVE A 04 DODGE RAM 1500 WITHOUT INSIDE HEAT AFTER THE ENGINE HAS RAN FOR AN HALF OF HOUR. ANTIFREEZE LEVEL GOOD, TEMP GAGE READS MID RANGE, WHAT SHOULD I EXPECT POSSIBLY A BAD HEATER CORE.… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
2002 Dodge Ram 1500 4X4: 4.7L..V8..it had the radiator and heater core
I have a 2002 Dodge Ram 1500 4X4 4 door with a 4.7L V8. Last year it had the radiator and heater core replaced. I am currently having problems with the heater (A/C works great) On days around 60 degre… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
Hello i have a 1999 dodge ram 1500 with the 5.9L and no heat.
hello i have a 1999 dodge ram 1500 with the 5.9L and no heat. new T stat was installed and the heater core seems ok and this all started about a month after a new water pump was put in… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
dodge ram 1500: heats good on passenger side and on drivers side..warm
why does dodge ram 1500 2002 heats good on passenger side and on drivers side it is barley warm… read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
1999 dodge ram 1500 4X4: water pump and thermostat..oem..cab
i have a 1999 dodge ram 1500 4X4 with the 5.9 gas engine. it has a new radiator, water pump and thermostat but i have no heat. i replaced the stant T-stat with an OEM and now i have luke warm air insi… read more
AMEDEE
AMEDEE
AUTOMOTIVE TECHNICIAN
Vocational, Technical or Trade Scho
9,105 satisfied customers
1997 Dodge ram 1500: engine heats..temp guage..blowing cold air
I have a 1997 Dodge ram 1500 pickup. The engine heats up and the heater starts blowing warm air. The next thing you know, the temp guage is up to about 230 or 240, and the heater is blowing cold air. … read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
2001 dodge ram 1500: idle it blows very lukwarm air
I have a 2001 dodge ram 1500. i am not getting very good heat from it. at idle it blows very lukwarm air. When driving i gett fairly hot air on the second fan setting but when i turn the fan any highe… read more
sprinkles08
sprinkles08
Technician
High School or GED
11 satisfied customers
1995 Dodge Ram 1500: low speed..speed only..Both hoses to heater core
My heater on my 1995 Dodge Ram 1500 blows warm air on low speed only, fan works fine but above low air isn't warm. Both hoses to heater core are hot. Could it be something in the heater core box?… read more
brownjeff
brownjeff
Associate Degree
13,873 satisfied customers
2002 Ram 1500: my heater does not blow warm air at all..heater core
I have a 2002 Ram 1500, and my heater does not blow warm air at all. I dont know where to start. I was wondering if it would be the heater core.… read more
Ram Head
Ram Head
Automotive Technician
Vocational, Technical or Trade Scho
78 satisfied customers
1997 Dodge Dakota Sport: I live in Montana..liter..V8..flush
I live in Montana and just purchased a 1997 Dodge Dakota Sport PU with a 5.2 liter V8. The problem is that we can't get the engine coolant temperature much above 165 degrees when the engine is at full… read more
Scott
Scott
253 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