Question about 1999 Mazda Millenia

1 Answer

Check engine light and air conditioning

My air conditioning is not working!! It blows air but it is hot air, will not cut off. The freon has been checked and is fine and the compressor seems to be fine, why will it not cool?!?
Check engine light has been on for years... just went to auto zone, they plugged it up and gave me the following codes: P1402 valve position sensor circuit, P0134 Circuit no activity, P0300 Random cylinder misfire detected, P0325 Knock sensor malfunction, P1170 HO2S11 no change detected, P1195 BARO sensor circuit, P1173 HO2S21 no change detected, P0170 bank 1 adaptive fuel table at calibrated limit, P0173 Bank 2 adaptive fuel table at calibrated limit...
They said none of this has to do with my air conditioner though... It is over 100 degrees outside and it is miserable! Any suggestions on what else this could be??

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    MVP:

    An expert that gotĀ 5 achievements.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

  • Contributor
  • 29 Answers

I Think I Can,
You Might Be Blending Hot Air With A/C Cold Air And Being 100Deg Outside, Your Getting
Really Warm/Hot Air Inside,
Your System Is Charged w/Freon, The A/C Compressor Is On/Engaged,
There Are 2-Aluminum Tubes Comming From The Compressor, [In & Out Pressure]
1 Tube Will Goto The Front Condensor, Infront Of The Raidator,
The OTHER Tube Comming Out Of The Condensor Will Goto A Dryer,
[Aluminum Looking Cylinder] Bigger Aluminum Tube[s]
The DRYER Will Then Feed Freon To Your Evap-Coil Inside Your Car [Cool-Air],

OK, The Dryer Tube's, 1 Of Them Should Be Cool/Cold, Locate That Tube, A Thermometer
wrapped w/Alum-Foil Around This Tube,
A/C ON, [A/C Compressor Engaged]
If You See The Temp Is Around 50-55 Degree's Or Lower, You Have Cold Air,
If Not, Above That, Low Freon, Or A restriction In The System. [Comes Later]
You Have Cold Air, You Have Warm/Hot Air Inside Car/Vents?
You Are Blending Hot Air w/Cold A/C Air, Problem Is With Heater-A/C Blend Box
Under Dash. There Are 2 Seperate Coils Under The Dash,
1 For Winter/Heat, Other [Evaporator Coil] For A/C, There Is a Diverter/Flapper door
That, For A/C, Closes Off The Heater Coil, Or It Should, To Prevent Engine Hot Water/Heat
From Blending w/ Cold A/C Air.
Most Are Controlled By A Diaphram, Vaccum Controlled From The Heater-A/C Controller
On The Dash.
If You Can Select From Defrost Vent To Dash and Floor Vents, Most Likely you Have
a Bad Diaphram That Controls The Heat-A/C Flapper Valve.
Most Time's You Can Open/Remove The Glove Box And See It,
A Temp Fix, For Cold Air, Would Be Remove The Vaccum Line From That Diaphram,
And Plug It, Pull The Metal Rod Back On The Diaphram with a Needle Nose Pliers,
If you Get Cold Air, Take a Ty-Wrap, Around The Shaft, Secure It, To Keep The
Vent In The Cold Air Position.
Then You Will Have To Get A New Diaphram Installed, Most Time's, Can Be Done
Through The Glove Box Opening.

Now About The Restriction In A System,
You Will Need A Set Of A/C Gauges, Car-Off, A/C Off, Connect Gauges.
IMPORTANT: The Gauges Before Connecting Should Show Pressure In Them [Freon]
Either The Gauges Have Freon In Them Or They Are In A Vaccum.
Otherwise They Have Air In Them, Air w/Freon=BAD Things.
OK, Gauges Show Pressure, Gauges Not Connected To Anything,
Open Up Both Knob's, Blue [Low-Side], Red [High-Side]
Gauges Needles will Move/Equal Out pressure,
BOTH Gauges Should Read Same Pressure, If Not, Quick Fix, Remove Gauge Glass
Covers, Need Little Screwdriver, If Gauges Off By ie: 4 psig,
Adjsut Low-Side [Blue] By 2psig and other, by 2psig, [Split The Difference]
So Now Both Gauges Read IDENTICAL Pressure.
Close Both Valves, Blue & Red
Connect Gauges To Car, Car=Off, A-C=Off
You Will See Pressure On Both Gauges,
Low Side Shuld Be Around 75-95psig, Depending on Outside Temp, If Around 60 or less
need freon.
OK, BOTH Gauges Should Show SAME Pressure reading,
If There Is MORE Than a 4psig Difference Between Them,
There Is A restriction In The System,
a Plugged "Orfice Tube" [Filter] Part Cost $3.00, Servicing The Filter, Alot More.
Restriction Causing Might Be , Moisture/Air in System [Improper Vaccum On System During Last Repairs], Compressor Breaking Down [Metal, Black Goo Bul-up]

Hope You Get Some Cold Air Soon.

Posted on Jul 10, 2009

1 Suggested Answer

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

What is the problem with my engine is always blowing hot air


If you mean the vents on the dashboard that are supposed to blow cold air if the air conditioning is on, and hot air if the heater is on, then here is a part answer, just for this problem I described.
No cold air could mean there is no gas in the air conditioning system.
The gas is called "freon" in the US, however we no longer use "freon" itself because of environmental poloution. We now use a substitute whose number is 134a.
There could also be some part failure preventing the air conditioning system from activating.
Some parts that fail could be the condenser, the evaporator, the receiver/dryer, one of the hoses or pipes, and the compressor.
A technician should be able to check all this out and give you a good answer.
God bless your efforts.

Dec 03, 2015 | 2009 BMW 116i Exclusive

2 Answers

Why does my lincoln town car air condition blow hot air with the compressor working and Freon full


I would recharge it then see if that fixes the problem. if it keeps blowing hot the you will more then likely you will need to replace the compressor. but I would check all the line first you might have a leak or one of the lines could have come loose

May 25, 2014 | 1992 Lincoln Town Car

1 Answer

My toyota corollas (2004 LE) a/c blows out cold air for 10 min and then starts blowing out warm/hot air. Filled up freon but it did not work.


Sounds like your HAVC pressure switch is going out cutting off prematurely or the system is overcharged and shutting off to prevent damage.

Apr 03, 2012 | 2004 Toyota Corolla

1 Answer

Air condition blows hot air but it has freon


You may have created an over charged condition and at this point the a/c compressor will cut off on high head pressures. This can be verified by installing gauges to the systems high and low side service taps and reading the pressures.An overcharged system will start the compressor briefly but soon cuts off once pressure goes to 350 - 400 lbs on the high side. Acceptable pressures for this system should be no greater than 250 high and low suction should drop to 40-50 psi.You might recover the charge and evacuate the system,then try bringing the charge back to proper level.A sight glass in the reciever drier really helps determining proper fill.Once all bubbles have dissipated from the sight glass during charging ,one should stop at that point to avoid overfilling.Too much freon is worse than a low charge especially in hot ambient conditions....

Aug 26, 2009 | 2003 Saturn ION

1 Answer

Air conditioning is working but it only blow hot


several things could be wrong such as low freon or a bad vacuum line or switch controlling the door to open for a/c

Aug 02, 2009 | 1991 Lincoln Town Car

1 Answer

Ac not working, blows hot air only. Recharged


Check the evaporator coil by sniffing the vents,floor is best, with your tester.

Jul 15, 2009 | 2005 Dodge Ram 1500

1 Answer

Air conditioning not working. Blowing cool air in the back and hot air in the front.


Is there air blowing from the front vents? or can you hear the vacumm change when you change it from heat to cool..... I think it might be a vacumm problem... its a 1997 so the controller vacumm hoses may be cracking.. let us know

Jun 01, 2009 | 1997 Chevrolet Suburban

1 Answer

Intermitten AirConditioning


Sounds like there is either

1. Too much freon in there

or

2. Not enough freon in there.

Freon (R) being freon or low CFC equivalent.

Sounds like the system is working fine, then the condensor or compressor gets too cold and freezes up (or gets WAY too hot). when you turn the A/C off, the system has time to stabilize and return to a more 'normal' condition.

Mar 04, 2009 | 1991 Ford F250

1 Answer

2001 Honda Odyssey Ex Air Conditioning Not Cooling


Hi, my best advise is to have your air check for freon leaks ,low freon causes the compresor cluth to stop working ,this can cause the air to blow hot .......

Jul 10, 2008 | 2001 Honda Odyssey

Not finding what you are looking for?
1999 Mazda Millenia Logo

1,828 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mazda Experts

yadayada
yadayada

Level 3 Expert

75822 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8201 Answers

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

Answer questions

Manuals & User Guides

Loading...