Question about 1997 Mazda Millenia

1 Answer

Heater blows cold air,thermostat was changed, hose are good what could it be

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

  • Expert
  • 104 Answers

Could be a blocked heater core (the part inside the dash that the hot water runs thru), or the heater blend door motor not operating (the part that allows the air from the heater into the vents), or a broken blend door shaft, or something similar. Most of these would require a workshop to attend to them, although you could try flushing out the heater core, by removing the heater hoses from the pipes they go onto at the firewall and directing water at a reasonable pressure (not high pressure like a steam cleaner) into one of the pipes to see if you get a whole lot of crud come out. This may or may not fix the problem and I recommend you take it to a garage and if cost is an issue just tell them you want it diagnosed, and to advise on a price to repair. Give them an upper limit on what you expect to pay for diagnosis as well.

Posted on Oct 25, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

2005 chevy avalanche, no heat only blows cold air and cant change vents


Check heater tap is operating remove heater hoses and back flush the heater core to check flow, check thermostat.

Nov 03, 2014 | Chevrolet Cars & Trucks

1 Answer

1989 GMC Sierra 1500 heater blows cold air. Changed thermostat. Both hoses are cold.


check antifreeze level add if low, and check intake heat control valve on ps side of intake if its locked shut it can be removed and a water pipe nipple put in place of it and the heater hose reconnected..if the water pump is good, it should give heat this valve should be on the intake with a heater hose connected to it..and its vacuum operated but will jam shut with age and cold weather..good luck..

Jan 19, 2013 | 1989 GMC Sierra

2 Answers

2003 f350 diesel no heat


thermostat is sticking open

Dec 25, 2012 | Ford F-350 Cars & Trucks

1 Answer

Heater does not blow warm air


try flushing the heater core there will be to rubber hoses that feed into the fire wall disconnect both of them and use a garden hose and flush from both side u could also use powder drain cleaner just run to extension hoses up act like a holding tank

Oct 26, 2012 | 1998 Chevrolet Blazer

1 Answer

Heater blow cold air in my 1994 Honda Accord (4


Yes clogged heater core may be the answer in your case .


Dec 11, 2009 | 1994 Honda Accord

1 Answer

Heater blowing cold air


squeeze the hoses to get any air bubbles out and refill coolant as necesary. are you sure you put thermostat in the right way? may be backwards. also may be your sensor.

Jan 04, 2009 | 1991 Dodge Ram

1 Answer

Heater Blows cold air


You could have a blocked heater core. Check for two heater hoses running into the firewall in the back of your engine. They should be together and about 5/8" in diameter. If one is hot and the other is cooler then your heater core is blocked. Unhook both hoses and use a garden hose to back flush. Be sure to catch the coolant and dispose of it properly.

Jan 03, 2009 | 2001 Chevrolet Monte Carlo

Not finding what you are looking for?
1997 Mazda Millenia Logo

224 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

60667 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21936 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...