Question about Cars & Trucks

1 Answer

I have 2003 Mazda 6 with no heat. Blowera work kuat only blows out cold air ao i I replaced thermostat still no heat tho There is a small leak in radiator but will that stop the heat from working?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 18 Answers

Check heater control valve.. or see if someone bypassed the heater core.. look for one hose going in the car and one coming out.. if bypassed it will be looped or plugged off...if you are not getting vacuum at the control valve it will not open....if you're control valve has a leaking diaphragm it will not open...need vacuum tester to check that...

Posted on Oct 14, 2013


6 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 2 Answers

SOURCE: 1999 sport 4.0 liter wrangler 6 cyl no heat

Tell the guy who fitted your radiator to finish the job, your cooling system needs bleeding

Posted on Jan 17, 2009

  • 350 Answers

SOURCE: No heat in 1998 Olds Intrigue (daughters car). Please help ASAP!!

It sounds like a thermostat.... $100-$150 repair shop.........$20 part if you do it yourself !
Go to an auto parts store and have them read your codes to determine why the Check Engine Light is on and to confirm any problems. Advanced Auto Parts will usually do this for free!
Did you check the fuses usually located under the dash on the drivers side or under the hood?

Posted on Jan 21, 2009

  • 2920 Answers

SOURCE: 1996 Acura TL Heater blows cold air when stopped

the heater core could be clogged you might again check your coolant level just to be sure its full

Posted on Jan 24, 2009

  • 289 Answers

SOURCE: slow leak in radiator or overflow heat blowing cold when stopped

It sounds to me as though you have a thermostat valve problem in the cooling fluid cicuit. The test is to remove it, let it get to room temp. and then place in a cup of boiling hot water. It should open. If it does not, replace. They are fairly inexpensive 5-10$. If you do not know were it is follow the top hose of the rad to the engine block it will be in the housing that the hose clamps to at the block. Caution!!!! when you remove that thermo stat housing you will drip coolant. Catch it in a pail or similar. If you miss the pail, hose down the driveway or whatever because it tastes great to pets but is deadly. ( Ethylene Glycol ).

Posted on Dec 02, 2009

Testimonial: "sounds good will find out soon "

  • 3 Answers

SOURCE: I have a 2003 Dodge Ram 2500 4x4 with a cummins

I had a 2001 Dodge 3500 with the same issue. In my case, the "air blend door motor" failed. I had it fixed at a Dodge dealership - the motor itself was only about $125 but it cost another $900 for labor - they had to remove the dash & center dash console in order to get to the motor. It did fix the problem though.

Posted on Apr 16, 2010

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Overheating and cold heat

Sounds like a air locked cooling system if not then look at the water pump

Mar 28, 2015 | 2003 Kia Spectra

1 Answer

2003 Subaru heat blows cold then hot

I assume you don't mean it just blows cold until the engine warms up. Could be sticking thermostat, air in system, low coolant, vacuum leak affecting flapper door.

Feb 01, 2015 | Subaru Cars & Trucks

2 Answers

2003 crown victoria overheats when a/c is on

A bad fan motor or controller maybe? Check for debris between condenser and radiator,clogs up with leaves and dirt ,have to blow out with compressed air.

Jun 02, 2014 | 2003 Ford Crown Victoria

1 Answer

96 Mazda mpv thermostat replaced hoses hot to heater box no heat still.. not overheating. only blows cold air.. help???

sounds to me that you have a vacuum leak at your temp selector, or a leak somewhere preventing you from switching from hot to cold. Problem problem with your hot/cold selector valve, or if cable controlled, the cable may have slipped off the seclector valve.

Dec 09, 2013 | Cars & Trucks

1 Answer

No heat / heater not working

not blowing air or when switch is on blows cold air when you have climate control knob turned over to heat? it could be a switch or blower motor or fuse if its not blowing any air. if its blows cold air when knob is on heat then is can be thermostat or low on coolant or it could be climate control module or it could be a air filter in dash.

Apr 05, 2013 | 1993 Mazda Protege

1 Answer

The heater will not blow warm air until you start driving. The fan blows but its cold air. Once you start driving the air turns warm. Why?

There may not be enough coolant in the system. What happends is the heating core is nothing more than a small radiator inside the car. If the fluid is low the heating core is empty. But once you start driving the water pump works harder and fills it up. Another possible cause is a sticking thermostat. If its stuck open the engine cant retain water to heat it up. Thus blowing cold air. Whith the engine cold remove the radiator cap and check your coolant level. If it is full a replacement thermostat may be needed. HTH and dont forget to rate.

Dec 06, 2010 | 2003 Dodge Stratus

3 Answers

2003 Mitsubishi Eclipse GS blows cold air in heat mode.

ok here we go and you aren't going to believe it...
I replaced the thermostat step one

I noticed that I had a small leak at the engine side of upper hose fixed that by taking it off and cleaning it and putting the hose back on Step two

then while refilling the reservoir with coolant i found that the hose that was supposed to be in the fluid was curled up on top and not sticking down in the fluid where it should be.
played with the hose until i got it to fall down in the reservoir where it should be Step 3

I started the car with the radiator cap off and let it run until it got to normal operating temp. and keep filling the radiator with fluid until the level stayed constant. Then put the cap back on and test drove. Everything worked fine haven't had that much heat in awhile and it kept blowing hot even when i stopped and let it idle for ten min.during test drive. Checked reservoir when I got home and had to add a small amount of coolant but not much.

I really think that the hose in the reservoir not being in the right place and pulling air into the system instead of coolant is the real culprit of this drama, but i replaced the thermostat to be safe.

Nov 16, 2008 | 2003 Mitsubishi Eclipse Coupe

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

70 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

76682 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Randy Ohler

Level 3 Expert

14585 Answers

Are you a Car and Truck Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides