Question about 2004 Mitsubishi Diamante

1 Answer

2004 Mitsubishi Diamante heat and Air blower motor.

Went drive my Mitsubishi the other evening, windsheild fooged up. Went to turn on defroster setting and I could not get any air movement. My first thought was a fuse. I have looked at both fuse blocks, passenger compartment and engine compartment and cannot see which fuse operates the blower motor. What should I do? Thanks!

Posted by on

  • 1 more comment 
  • jjabclong Oct 06, 2008

    Is it true the Diamante is suseptable to electracal problems? A friend warned me that they were before I bought the car. Should I have heeded his warning?

  • jjabclong Oct 07, 2008

    I will look into relay switch. Also now all of a sudden my door locks won't work with remote or inside car, trunk won't open, and radio attenae won't go down! Yikes! What's goin on?

  • Ryan May 11, 2010

    I hate to even suggest another concern but in the first part of your post you mentioned that the windows fogged up. Diamantes have consistently had one problem over many years; that is two tiny O-Rings that connect to the heater core. These have been known to go out and have been one of the most common complaints about Diamantes.

    Did you notice a sweet syrup smell inside the car? If so, that and the fogging windows would be a good indicator. The reason I wonder if this might be the cause of your problem is that many of the other symptoms that you mentioned can be attributed to the onboard computer which just happens to be under the heater core. If it is leaking the fluid can drip on to the computer and cause all sorts of havoc with numerous auto problems, some that are very serious.

    As a final note: If this posts applies to you then there are several boards on the internet where members have giving detailed instructions on how to replace the O-Rings yourself. Apparently the dealers charge a thousand and up to install these $10 parts. They say you have to completely remove the dash, discharge the a/c etc. In the forums other users explain how you can avoid doing that and with a little time fix it for less that $30 yourself.

    One board I saw was Edmunds Car Space. Instructions at:

    I hope this is not the case for you but wanted you to have all the information if it applies.

    Good Luck



1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 87 Answers

OK... First thing it may be a (relay switch) they are cheep and installed in sec. Ok now if you dont know what one looks like then go buy one ol' rilley or pep boys or auto zone are somthing . while your there buying the relay talk to these people most of the time they are good at supporting people . So you may ask "hey can you help me find where this part is located" . Ask about the fuse to, once you get someone out there to help you . One thing I know for sure is you did look in the correct spots for these fuses but let me tell you worst case. Would be your heater switch is out. They are expensive and are only found at the dealer. I would recommend looking on e-bay if this problem comes to this. oohh if you cant figer out how to put one of these in then find a friend that is rely good at installing car stereo's Im sure you will win this problem.

Posted on Oct 07, 2008


1 Suggested Answer

  • 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.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

2005 ford focus mk1 A/C button not working Compressor works since Cold air comes from defroster and heating vents in both sides of the dashboard

A/C Switch Assembly
The A/C switch assembly integrates the A/C request button, RECIRC request button and rear DEFOG button into a single assembly.
The A/C request button is enabled by the blower motor switch. The A/C switch assembly sends a reference signal to the blower motor switch. When the reference signal is grounded (blower motor switch turned ON) the A/C request button is enabled. The A/C request button is disabled when the blower motor switch is in the OFF position. When the A/C request button is activated (indicator ON), an A/C request signal is sent to the PCM. The A/C request button indicator can be toggled on and off when in the FLOOR/DEFROST or DEFROST mode, but an A/C request signal will be sent to the PCM regardless of the indicator status.
When the RECIRC request button is activated (indicator ON), the air inlet mode door actuator will drive to the recirculated air inlet position. When the RECIRC request button is deactivated (indicator OFF), the air inlet mode door actuator will drive to the fresh air inlet position. The RECIRC request button is disabled when in the FLOOR/DEFROST or DEFROST mode.

Jul 13, 2016 | Ford Focus Cars & Trucks

1 Answer

My windows are not defrosting properly.

Do you have heat? Does the fan turn on? are you getting air from the defroster vents close to the windshield? If you have heat make sure the defrost control is working. I'd open the outside air vent and turn the blower on high speed. If there is no heat, the heater control valve is not working. Double check the radiator fluid tank, make sure you have enough fluid (antifreeze) Low fluid levels can reduce the hot water flow to the heater coil inside the car. If there
is no air flow through the defroster vents you may have a problem with the fan control, or the fan motor. Good luck.

Feb 20, 2015 | 2004 Chevrolet TrailBlazer

1 Answer

Fogging windows

Heater radiator leak.It is under the windscreen and can blow hot water (vapor) to the glass.Does it slightly smells heated water?Very rare:rain water in the saim compartment as the heater having the same simptoms.Track the problem,ceck coolant level regularly.Cheers,hope u deal it,let others know.

Oct 26, 2013 | Jeep Cars & Trucks

1 Answer

Replaced blower motor resistor in 2004 chrysler pacifica. air came out about 5 minutes and then quit. what else should i check?

If you replaced the Resistor and then it worked properly and then went out again.. You are burning up the Resistor, you need to find the cause. You have a Feedback into the system...

Apr 10, 2013 | 2004 Chrysler Pacifica

1 Answer

I have a 93 4runner v6 manual. I went to turn the heater on the other day and no air was coming out of it but when I started driving down the freeway air started coming through the vents. When I stop

sounds like your fan is either jamned, burnt out or even frozen, you might be lucky and find its just a blown fuse, you'll need to check your fuses box then start investigating if the fan turns freely or not

if you put the air on recirc you might be able to stop cold air blowing in when you are travelling. if you are waiting for a garage to sort out the fault then get a fan powered by the cigarette lighter, air moving over the window should at least keep mist clear even if it doesnt defrost it

Nov 09, 2011 | 1993 Toyota 4Runner

1 Answer

Heat and air condition fan stopped working on my 2004 Dodge Dakota, does not blow, ice is comming in and i need to be able to defrost my windshield and heat my truck

First thing to check is the fuse. There will be one under the hood and another in the interior fuse box. The 2004 model does nt have a relay. If the fuse is good, you need to check to see if the blower motor is good. The motor is located under the glove compartment area of the dash, near the firewall. Disconnect the harness from the blower motor, and using jumper wires, apply voltage directly to the blower motor contacts. If the blower motor works, then the switch is bad. If the blower still does not work then the motor is bad.

Mar 04, 2011 | 2004 Dodge Dakota

1 Answer

When i turn my heater fan on does the air compressor come on and why would the car shake

The air compressor will come on if you have the defroster on. Most vehicles run the ac with the defrost to dehumidify or dry the air blowing on your windsheild. The compressor being on at idle could cause the car to idle slower and rougher which could be the shaking you are talking about.

Feb 11, 2011 | 2001 Kia Sephia

1 Answer

Front blower motor will not blow out heat or nothing, if i replaced the relay in the fuse box in side suv could that work. relay for blower motor, also not sure which one is the relay in the fuse box.

This may be a faulty Blower motor resistor, usually mounted inside the blower motor air box, or defective blower motor. There is no single Relay for the blower motor.

Dec 11, 2010 | 2004 Mitsubishi Endeavor

Not finding what you are looking for?
2004 Mitsubishi Diamante Logo

432 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mitsubishi Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8836 Answers

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

Answer questions

Manuals & User Guides