Question about 2004 Mazda MPV

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2004 Mazda MPV cabin air is just not getting hot enough.

The cabin air doesnt get hot enough in cold weather. the gauge reads normal temperature for the engine. I drive for an hour and its still just blows low heat. The heat meter is all the way to the right clock wise. If I open the vent the cabin feels like I have the a/c on. A/C button is not on. I see other people have the same problem but no solution. Thermostat might be the problem but other blogs say that this didnt fix the problem. Is this just a common problem with the 2004 Mazda mpv. What should I do without spending money unecesarily.

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  • rudy1c Jan 22, 2009

    Thanks I will get that checked

  • Anonymous Feb 04, 2009

    i have a 1996 2.5 mazda bongo and the temperature guage does not work and the heater only blows luke warm air . why is this



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Cabin airfilter definately helped clean the air and a noticable change in tempearature but its still doesnt get hot quick enough in very cold temperature. I guess I will try the thermostat change next. Thanks for your help. I will come back with updates.

Posted on Feb 16, 2009

  • rc Mar 27, 2009

    Ok so im back. Thank you for this blog. I finally solved the no heat problem. Even though summer is knocking at the door. Atleast m ready for next winter lol. As x18eheeler60 said earlier, I changed the thermostat wich didnt make a difference, but I happen to be changing an ignition coil while at the mechanic and he noticed as the intake manifold was off that the heater control valve nicely hiiden way in the back by the firewall was almost all the way up which menat that whoever had the vehicle before me must have wanted it that way. It didnt allow the heat to come in like I wanted it to. He adjusted the lever all the way down and now the freaking heat is on like fire woe. It heats up in less than a minute when I start up my car now and it feels like my wifes hot blow dryer. WHy didnt I try that first. Well thanks to x18wheeler60 and this site we all ca share our experience and knowledge and save some of that dealer money. By the way. I changed the ignition coil and the vehicle is responding like a horse right now. No more Stalling and low power. Im really loving this vehicle now. It drives like a race car now. Not that a race in the mean streets in NY but im sure if I did and if it was legal I probably can hang for about half a block until I remember im driving a minivan lol(can you tell im excited) lol. Anyway. I hope my blog was helpful. Viva the 2004 mazda mpv.

  • Carleen Stuck Oct 24, 2011

    Thank you so much! Luckly my husband didn't have to take off the intake manifold to reach our heater control valve, but the lever on it was up. As soon as he put it in the down position it worked great. We are so happy to have found this site!


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If changing the thermostat didn't work, have the heater control valve checked, it may not be opening all the way to let the coolant circulate thru the heater core fully.

Posted on Jan 21, 2009

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Posted on Feb 05, 2009

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We had the same problem a few months ago. As it turns out there is a cabin filter behind the glove box that was seriously dirty and plugged. We removed it and my wife cleaned it with soap and water...and now our heat has returned!

Posted on Jan 28, 2009

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