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Mitsubishi Diamante



  • vivonavivona Posts: 410
    korinna - Check with your dealer for the Mitsubishi part number of the changer that will work with your radio, then go on eBay and look for a used one. I have seen six-disk changers go for $60-$100. You need to check to see if there is a cable already installed between your radio and the trunk, or you will need to buy a cable. You can also check with to see if there is an aftermarket changer that will work with your existing radio.

    Mr. Vivona
  • pwcpwc Posts: 7
    click, click, ... and the saga continues. could it be the airbag on the passenger seat since the noise coming from that area?
  • lngtonge18lngtonge18 Posts: 2,228
    Airbag on the passenger seat? Your Diamante doesn't have any airbags in the seat. If you meant the airbag in the dash, then no, that's not the source of the clicking. The clicking has to be something in the ventilation controls. Either a sticking vent flow motor or if your system has any sort of vaccuum control to it, its could be a vaccuum leak in the auto AC control unit causing a motor to stay on. Your symptom sounds like the latter, but I'd be surprised such a modern car would still be using vaccuum controls. My 85 Audi 5000 had an annoyingly loud ticking sound coming from under the dash on the passenger side. It started intermittently and eventually would do it non-stop a few minutes after starting the car. The vent controls were also stuck in defrost mode. It was a bad auto AC control unit, which was vaccuum-operated.
  • itsjkmitsjkm Posts: 1
    A friend has a 91 Diamante (japanese specs)4wd DOHC V6. it will not start. The car began by not starting some days then it won't start at all the engine turns over but the there is no spark. I took a test light (the pen type) and tested the wires on the bottom of the coil packs and there is current present, but on the top side where the plugs attach there is no spark even while the engine is turning over. A prior owner installed a remote start himself which was done kinda shabby like and the control box was kicked down by my friends wife(not sure if the two are related but the problem started after the box was kicked down and the wires pulled. we tried unpluging this unit but it. doesn't help anything. We do not have a unit to test for the codes is there some way to test for codes like a OBD system that flashes the check engine light or somewhere to attach a multimenter and count arm bouncing around. Any help would be appreciated
  • kfhmailkfhmail Posts: 199
    My 1992 Diamante is getting on in years and I will probably be replacing it in the fall (Oct or Nov). I have approximately 166,000 miles.

    It has really been a GREAT car. White Pearl exterior with grey interior (LS).

    I have only needed to put one set of brakes on the car. The back brakes were replaced at 108,000 miles and the front at 126,565 miles. That is the only work ever done to the brakes.

    I have put on 3 sets of tires...the last ones about a year ago.

    It has always leaked a little oil. it is burning oil...but it still runs great. I put in some "Stop Smoke" and the oil does not show burning out the exhaust. Replaced valve cover gasket.

    I do have one little problem (and it was my fault for not checking better)...about 3 years ago the transmission started leaking and before I realized it, it had drained all the fluid out of the transmission. Took it in for service...replaced a gasket/seal and re-filled the fluid. It runs great except on occasions it appears to shift into neutral. This only happens on "hot weather" days and it is "very intermittent". It only happens when you first start up the car and pull out of a parking space. If you let the "idle" basically pull you out (back) and then you shift to drive occasionally it acts like you are in idle. You then have to shift back to park and then to drive and everything is fine. The strange thing is that is appears to be getting better each year. Don't know why.

    Again this has been a great car...the best driving car I have ever had (Camaro, Skylark, & Supra). It still looks very good.

    I think Mitsu messed up when they did not put more effort into this car.

    Oh well...soon I will have to part ways with this car. I am looking at a 2006 Infiniti M35 or 2006 Acura RL.

    I have driven both and they drive very well, but they are not like my 92 Diamante.

    So guys...enjoy your Diamante and I hope you have as good of experience with yours as I have.
  • cracoviancracovian Posts: 337
    Diamantes are no longer sold in the States. Mitsubishi purposely cheapened the car for this market, so it couldn't even be compared to the real Magna. We got the 4-speed transmission, no side airbags, no wagon or 4WD option. I was sooo close to getting the last 2004 VR-X but decided on another fine Australian automobile instead: Pontiac GTO (Monaro) :-)
  • d2000d2000 Posts: 1
    I am having the same problem with my Diamante 2000. The clicking last for about 30 seconds then stops. Happens every time I start the car. It will go away if I turn up the heat. So far, everything is heating/cooling properly. If I leave the temperature at 65 (the lowest setting) then the clicking goes away and does not return until I start the car again. From what I have found out so far, it is the mechanism which mixes the hot/cold air to get to the right temperature. There is a lever under the dash directly behind the center console which moves back and forth as the temp is adjusted. I think whatever sensor or gadget tells the lever it has moved far enough is not working.
  • pwcpwc Posts: 7
    Thanks for your comments and suggestion. I'll check it out. :confuse:
  • pwcpwc Posts: 7
    Jack pot! finally someone having the same problem with their Diamante. I'm having exact same problem. I'm parking the car outside the garage at nite and in the morning the temp is in the 50 degrees and when i start the car, all is well. After that, the noise is back. Thanks for your comments. :confuse:
  • bosoxn04bosoxn04 Posts: 1
    I own a 2000 Diamante LS and blew the front 2 speakers in the door. I went to buy new ones and they told me that because of the infinity sound system in the car I would have to replace everything (the deck and all the speakers) and that "it wouldn't sound right" if i just replaced the 2 front speakers with after market speakers. are they screwing with me?
  • ccancioccancio Posts: 91
    I changed the stock speakers on my '99 Diamante with MB quartz back in 2000.

    I just can't remember what size they were, either 6.5"'s or 6.25"'s? Take your current speakers and see if it states 4 Ohm or 8 Ohm, just buy something similar to it you will be fine. Replace with a component speaker set ie. Separate tweeter and woofer. You might have to use the tweeters somewhere else unless you are unhappy with the stock tweeters ( ...I wasn't) and replace them as well.

    Do not buy the common two-way or three-way speaker sets, there is a high pass filter on the line and it won't sound right.

    Also you may also want to transfer the a foam gasket that is glued to the front of the speaker cone ( If there is one ...I can't remember). This completes the seal between speaker and the interior door molding. If you don't complete the seal, you will probably have less bass.

    You will just need to cut the stock speaker connectors on the speaker end and determine which is the negative and positive wire. You can usually tell by reading where the current wire in connected to on the old speaker. It should be marked by a (+) or (-) on the speaker housing.

    Good Luck...
  • vivonavivona Posts: 410
    You could replace the speakers with exact replacements from Mitsubishi. They will cost about $60 each. See RP6295&appSectionid=2610&groupid=2644&subgroupid=2646&componentid=26819&make=24&model=Diam- ante&year=2000&graphicID=6295275&callout=9&catalogid=2 or comparison price them at more of the dealers offering parts online at wholesale at

    With exact replacements you are guaranteed to have the original sound.

    If by "blew" you meant that the foam deteriorated and the speakers still work, but they sound raspy, you can replace the foam yourself for less than $20 and about an hours work per speaker. Visit

    Mr. Vivona
  • horse1horse1 Posts: 2
    I'm getting mixed advice on just how many parts, such as, water pump,fuel filter,etc. ,to just routinely replace, as part of 60,000mi service.
    Estimates range between $1,000 & $2,500.
    I don't want to sacrifice safety/peace of mind for $, but I also don't want to be talked into doing more than is reasonably needed.
    I like the car, but am aware of it's value($7,000-$8,000)
    Also, I'm aware that the final decision is mine, but would appreciate a bit of help in the decision making process.....thanks in advance to anyone who responds.
  • vivonavivona Posts: 410
    Check your owner's manual and only do what is recommended for 60,000 miles. Also note what is recommended based on how may years it is been since the last service, such as a coolant change every two years.

    For 60,000 miles, spark plugs and timing belt are "must do's". While the timing belt is being replaced, it is good practice to replace the drive belts, the water pump and the timing belt tensioner. If you are good mechanically and have the time, you can save hundreds of dollars by doing the work yourself. You will need the factory service manual which has step-by-step instructions. You can save on parts by visiting the online dealers that offer wholesale pricing on genuine Mitsubishi parts (see my previous posting) . I recommend against using aftermarket parts. You will never be sure if the part is up to the original specs. You can buy the factory parts wholesale and still find a dealer that will install them for you and save about 25% on the parts cost.

    Mr. Vivona
  • horse1horse1 Posts: 2
    Thanks Mr Vivona, your input is appreciated.
  • diadondiadon Posts: 1
    Hello All-
    Any good advice out there as how best to remove an alternator on my '93 3.0 SOHC Dia?
    Manual says "remove from below"- no way!
  • led555led555 Posts: 1
    You may have cell phone interference... I've noticed the clicking noise in my 2003 diamante... and I've pin-pointed it down to my cell phone. As a matter of fact... I've heard a clicking noise in various vehicles. Try doing some experiments... if you agree that the clicking noise may be caused by your cell phone. :shades:
  • I've got a 2001 D LS with 60K miles. My problem is that the vehicle loses power at low speeds (<30 MPH) to the point where the gas pedal does nothing although the vehicle still idles. Not every time, but on several occasion the TCL light begins the flash at the same time. I took it to the South Coast Mitsubishi dealer and they identified a warning signal coming from the throttle body. Unfortunately, they claim they are unable to pinpoint the problem and suggested that I spend $1,700 on an entirely new throttle body. This seems like way too much money to be spending on a car that looks and generally drives like it's new. Has anyone faced this problem? Would cleaning the throttle body fix this issue?
  • ccancioccancio Posts: 91
    I think its funny that repair of new cars seems to be reduced to replacing whole assemblies rather than directly pinpointing the problem... :mad:

    Maybe the only *able* mechanic was away on vacation that day.image. :confuse:

    I suggest you get a second opinion by going to another mitsi dealer - then if still no direct answer try an reputable independent repair shop that specialize in Mitsubishi's...

    You also have to watch the dealer parts prices, they charge you *mega* retail when you can get them cheaper on-line! Ask them for a quote and specify the required parts list with prices. Then compare with Mentor Mitsubshi .

    Good Luck...
  • rayk3rayk3 Posts: 9
    I have heard that the timing belt must be replaced together with the balancer belt(if I am not wrong). Is it really so? and I am wondering: any car mechanic is able to change the timing belt properly or "high class" specialist required for the job? Appreciate any response. Ray K.
  • lngtonge18lngtonge18 Posts: 2,228
    I don't think the Diamante has a balancer belt. Four cylinder Mitsus use this belt to run the balance shafts, but the V6 doesn't have balance shafts. You might as well change all the accessory belts though. You don't necessarily need a high class specialist to change the timing belt, but don't just take it to some cheap shadetree mechanic either. Any reputable shop that deals with imports should be able to handle the job.
  • rayk3rayk3 Posts: 9
    Thank you very much for your response.
    Ray K.
  • lnnguyenlnnguyen Posts: 1
    I have a 1998 Diamante LS.
    My last brake job was done by my trusted independent mechanic who replace F/R pads and turned all the rotors at 65K miles.

    I'm now at 114K miles and thinking I should service the brakes as preventive measure. I've done brake jobs on other cars in the past so I don't think it's especially difficult. I'm planning on using brake pads from the dealer.

    After reading through this board, my concern is with the rotors. I'm planning on having them turned at Autozone if not worn down below specs. I believe they have the Accu-turn machine. Is this a good idea?

    Any input is appreciated!
  • lngtonge18lngtonge18 Posts: 2,228
    If the rotors were turned once, I wouldn't have them turned again. It will make them too thin and prone to warping. Besides, I don't think Autozone turns rotors anymore. At least they don't in my area. It has become so expensive to turn rotors anymore that it's wiser to just buy new ones. As long as the rotors aren't warped and don't have any scoring on the surface, I would just change the pads and be done with it. Are you sure you even need to change all the pads? Rear pads normally last over 100k on this car, especially if driven primarily on the highway.
  • jim78jim78 Posts: 1
    I am considering buying a used Diamante 2001 LS with 26k miles on it from an in-law. Vehicle has had 2 owners both in family. No major issues. Carfax Vin search did not uncover any issues either. A lot of my general Diamante research has scared me though: HeaterCore problems, high parts cost, transmission hesitation, brake problems. What are your thoughts? I'll be getting a good deal on it but don't want a lemon that's going to gradually drain my wallet. Also have a young family and safety is a concern as well. I will be looking to keep this car for a long time so low re-sale value isn&#146;t a big concern. Let me know if you think I should pull the trigger? Also what do you think a FMW ballpark price for this car is? My in-law doesn&#146;t want a lot of money for it but I want to make sure he gets a fair deal.
  • vivonavivona Posts: 410
    You have to keep in mind that internet forums are an extremely small sample of enthusiastic owners. If they have a problem they post it enthusiastically like every car of that make and model has that problem. You can get a more accurate view of the relative reliability of a car through professional reliability ratings such as: e

    Note that the survey says the 2001 Diamante, along with all second generation Diamantes, has the highest reliability rating possible. My experience with my two Diamantes has been excellent.

    The heater core problem seems to be a rare issue where a gasket leaks. The actual part is cheap, but getting to it can be difficult, though some owners have posted on the Diamante Owners Group website a procedure to remove the heater core without removal of the dash. This problem does not show up on any industry-wide reliability rating, so I doubt it is a major issue.

    I have not found parts to be any more expensive than other imports. You can get parts for wholesale through

    The transmission hesitation is not a defect. It is a characteristic of the shift pattern program where a sudden throttle flooring at around 25MPH may not cause a downshift as may be expected by those looking to jump into a hole in traffic. The Diamante has great low-end torque, so the transmission program is not as rev-happy as would be for an engine that needs high RPMs for power. In my 6 years of driving my Diamante, I have not had any problems with the transmission shifting characteristics. You should go drive the Diamante and decide for yourself.

    The brake problems you read about in forums happens to any car. Mechanics routinely overtorque lug nuts and than can distort the rotor which will cause it to wear unevenly leading to brake pulsation about 3,000 miles later. Read all about it at

    As to value, you can check it here at Edmunds, as well as at Just make sure you put in all the details and mileage correctly and fairly rate the condition of the car. You would use "private party value" to determine a fair price when buying from an individual.

    Since you have a lot of direct knowledge about the Diamante in question, I would say it would be an excellent opportunity to buy a great used car at a fair price. If you love the way the car looks and drives, I say go for it.

    Mr. Vivona
  • glaraglara Posts: 1
    My '99 Diamante with 68,000 miles intermittently produces a harsh jerking/shudder/vibration when in fourth gear at speeds between 40-50 mph. The teeth-chattering vibration stops when I stop accelerating. My mechanic cannot reproduce the phenomenon, and I am worried it is the transmission. :confuse:

    I had the 60,000 mile service not too long ago, and I spent a lot of money to have all the required (and the recommended timing belt replacement) work performed. Has anyone else experienced this vibration/shudder in their D's or suspect what might be the cause???

    Thanks for any help you might offer.
  • mzkylah21mzkylah21 Posts: 1
    i just recently purchased a 1995 Diamante Es and the radio is not working something about entering a code....where do i find the code to make it work?
  • david51david51 Posts: 1
    I have a 1997 Diamante and love this car.
    replaced the rear pads this weekend but noticed the rotors are shot and
    need to be done... does anyone know how hard it it to replace them.
    Thanks to all
  • gtroopgtroop Posts: 85
    Check the glove box, I keep mine in a folder with the owner's manual. If its not there contact the previous owner or the dealership where you purchased the car. If these places don't work you might need to drop by your local Mitsubishi dealer and have them look the code up for you.
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