Overheating Problems - Mazda Forum
 
LinkBack Thread Tools
post #1 of 10 (permalink) Old 06-07-2008, 11:01 PM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hello guys. This is my first post & of course it's a Millenia problem.

Well I bought the Millenia (2002) 2.5 for my wife & it's been great until recently. The problem is the car runs fine when it idle or driving. The overheating happens when she turns teh ac on. At first it would shoot up as soon as you turn it on. I replaced the coolant temperature sensor & at first it seemed to do the trick but as soon as we got in traffic the temp starts to climb.

The ac fan works fine but the main fan does not. When you turn the ac on when the car is running both fans kick on but in about 6 seconds the main fan cuts off.

My question is how many people have had this problem & how do I go about fixing this?

Thanks for the help.
skylineg1@yahoo.com is offline  
Sponsored Links
Advertisement
 
post #2 of 10 (permalink) Old 06-16-2008, 02:18 AM
Mazda Newbie
 
Join Date: Jun 2008
Posts: 5
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Hello guys. This is my first post & of course it's a Millenia problem.

Well I bought the Millenia (2002) 2.5 for my wife & it's been great until recently. The problem is the car runs fine when it idle or driving. The overheating happens when she turns teh ac on. At first it would shoot up as soon as you turn it on. I replaced the coolant temperature sensor & at first it seemed to do the trick but as soon as we got in traffic the temp starts to climb.

The ac fan works fine but the main fan does not. When you turn the ac on when the car is running both fans kick on but in about 6 seconds the main fan cuts off.

My question is how many people have had this problem & how do I go about fixing this?

Thanks for the help.[/b]
I Had the same problem and believe me i did spent a lot on it, changed the radiator, water pump, temperature sensor, and what have you regarding the cooling system, except for the fans that i didn't change. Out of frustration, i kept checking every where within the engine compartment and just recently, i was messing with the wiring around the fuse box and found a short circuited wire. Lo and behold, i straighten out the wires (cutting and joining where necessary) and i can tell you that i am so proud of myself (though have spent a lot of money), i finally fixed the overheating in my 2002 Milly and enjoying my Milly once again. I dont know how curious you are when it comes to things like this. i got tired of spending money and decided to take it on myself. so, with my experience i will say that you check for short circuit (making sure that all cooling components are in good working conditions) , which might be cutting off power, or not supplying enough power to one or more components of the cooling system and hence, overheating. Good Luck!
dapsey@hotmail.com is offline  
post #3 of 10 (permalink) Old 08-16-2009, 03:52 PM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well I am still having the problem with the cooling fan not cutting on. I did some checking 7 realized that the original cooling fan's motor was gone so I replaced it, but it still will not come on.

Now I know that the coolant temp sensor reads the temp levels & then tells the engine management unit to cut the fan on but this is just not happening. I'm thinking of just hard wiring the fan to a 12 volt source.

Anyone having this problem.
skylineg1@yahoo.com is offline  
post #4 of 10 (permalink) Old 08-16-2009, 04:48 PM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
where are the fan relays located under the hood exactly?
skylineg1@yahoo.com is offline  
post #5 of 10 (permalink) Old 08-16-2009, 05:14 PM
Platinum Member
 
Saint_'s Avatar
 
Join Date: Nov 2006
Location: California,US
Posts: 4,882
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
There is a part location index under millenia tech session I think. Check the fan and relay. If they are OK, you either have air in cooling system, low coolant or a bad coolant temp sensor.

You can download FSM for further details.
http://tinyurl.com/millenia

2001 Mazda Millenia S 178k Brilliant Black
Saint_ is offline  
post #6 of 10 (permalink) Old 08-16-2009, 07:46 PM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
I checked the fan yesterday & the motor was shot so I picked up another from the junkyard behind Shea stadium (check to see if that one worked before i bought it) & installed it. I have changed the ECTS already. Do you think I should get a new one.

I used the link you posted to see the relay. That was the one I thought of too. I tested that one & the relay came up fine. I didn't test the coolant temp sensor location though. I'll test it tomorrow.
skylineg1@yahoo.com is offline  
post #7 of 10 (permalink) Old 08-16-2009, 10:46 PM
Platinum Member
 
Saint_'s Avatar
 
Join Date: Nov 2006
Location: California,US
Posts: 4,882
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
I checked the fan yesterday & the motor was shot so I picked up another from the junkyard behind Shea stadium (check to see if that one worked before i bought it) & installed it. I have changed the ECTS already. Do you think I should get a new one.

I used the link you posted to see the relay. That was the one I thought of too. I tested that one & the relay came up fine. I didn't test the coolant temp sensor location though. I'll test it tomorrow.[/b]
If you just changed the temp sensor then you should prolly have air in the cooling system.

2001 Mazda Millenia S 178k Brilliant Black
Saint_ is offline  
post #8 of 10 (permalink) Old 08-17-2009, 09:29 AM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
wow so just having air in the cooling system would cause the cooling fan to not work?
skylineg1@yahoo.com is offline  
post #9 of 10 (permalink) Old 08-17-2009, 09:29 PM Thread Starter
Mazda Newbie
 
Join Date: Jun 2008
Location: Far Rockaway, NY
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well finally after three years of dealing with this problem I finally got it fixed. The problem was the relay. for some reason when it was tested it showed as if it was fully functional but in reality it was not. I extended the original wires & installed a different realy that I bought from Autozone & the fan came on. Good thing too because NYC was hot as **** today.
skylineg1@yahoo.com is offline  
post #10 of 10 (permalink) Old 08-18-2009, 01:40 AM
Platinum Member
 
Saint_'s Avatar
 
Join Date: Nov 2006
Location: California,US
Posts: 4,882
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Congrads! Actually even with the air two fans should come on with the AC..

2001 Mazda Millenia S 178k Brilliant Black
Saint_ is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Mazda Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome