2003 Mitsubishi Diamante problems
The Mitsubishi Diamante is an automobile that was manufactured by Mitsubishi Motors from 1990 to 2005.
The first series was a hardtop introduced to the public at the Tokyo Motor Show in 1989. It went on sale in Japan exclusively in May 1990 and won that year's Japan Car of the Year award. It was created by splicing an extra 6.6 cm (2.6 in) right down the middle of the Mitsubishi Galant, which itself had won the Japan Car of the Year award in 1987. The Diamante's platform was also used for the sporty Mitsubishi 3000GT.
The name Diamante was derived from the Spanish, Portuguese, and Italian word for "diamond" and was adopted also as homage to the Mitsubishi badge which is composed of three diamonds. In Japan, this vehicle was sold at a specific retail chain called Car Plaza.
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Common 2003 Mitsubishi Diamante problems
Common Problems with the Mitsubishi Diamante 2003
The Mitsubishi Diamante 2003 is a car that has been reported to have several common problems by its owners. These issues range from transmission problems to electrical issues and suspension problems.
1. Transmission Problems
One of the most common issues reported by owners of the Mitsubishi Diamante 2003 is related to the car's transmission. The automatic transmission in this model is known to shift roughly or slip, which can cause hesitation or jerking during acceleration. This issue can be caused by low fluid levels, a malfunctioning torque converter, or worn transmission bands. It is recommended to check the transmission fluid levels regularly and replace the transmission bands if necessary to prevent this issue.
2. Electrical Issues
Electrical issues are another common problem reported by owners of the Mitsubishi Diamante 2003. These issues can include malfunctioning alternators, batteries, or starter motors. Some owners have also reported problems with the car's climate control system, such as the heater or air conditioning not working correctly. It is recommended to check the electrical system regularly and replace any faulty parts to prevent these issues.
3. Suspension and Steering Problems
Suspension and steering problems are also common issues reported by owners of the Mitsubishi Diamante 2003. Worn-out ball joints and bushings can cause clunking noises, uneven tire wear, or poor handling. Some owners have also reported issues with the car's steering, such as a tendency for the car to wander or drift while driving. It is recommended to replace any worn-out suspension components and check the steering system regularly to prevent these issues.
4. Engine Problems
The engine's timing belt is also an issue for some owners of the Mitsubishi Diamante 2003. It is recommended to replace the timing belt every 60,000 miles to prevent it from breaking and causing serious engine damage. Neglecting to replace the timing belt on schedule can result in poor engine performance or even complete engine failure.
5. Fuel System Problems
Fuel system problems are also reported by some owners of the Mitsubishi Diamante 2003. These issues can include fuel leaks or problems with the car's fuel pump, which can cause the car to not start or to stall while driving. It is recommended to check the fuel system regularly and replace any faulty parts to prevent these issues.
6. Interior Problems
Interior problems, such as faulty power windows or door locks, are also reported by some owners of the Mitsubishi Diamante 2003. These issues can be caused by worn-out or faulty parts and can be resolved by replacing the faulty parts.
In conclusion, while the Mitsubishi Diamante 2003 is generally a reliable car, there are several common problems that owners have reported. Regular maintenance and timely repairs can help prevent these issues from becoming major problems.
Why did Mitsubishi discontinue the Diamante?
The Diamante was a popular car among buyers who were looking for a comfortable and stylish luxury sedan. It was not as popular as some rivals, such as the Toyota Camry and the Honda Accord, but it was a good value for money car. The Diamante was discontinued in 2005 due to declining sales.
What engine is in a Mitsubishi Diamante?
The Diamante was marginally larger with improved headroom. It was powered by several engines: the base engine was a 2.5-liter MVV (lean burn) V6, followed by a number of 2.5 and 3.5-liter variants, the 2.5-liter engine sported 175 hp and the 3.5-liter engine boasted 210 hp (160 kW).
Why won't my Mitsubishi Diamante start?
The most common reasons a Mitsubishi Diamante won't start are a dead battery, an alternator problem, or failed starter.
What size engine is in the 2004 Mitsubishi Diamante?
3.5 L
Used 2004 Mitsubishi Diamante - Specs & Features
| Engine | |
|---|---|
| Base engine size | 3.5 L |
| Cylinders | V6 |
| Base engine type | Gas |
| Horsepower | 205 hp @ 5,000 rpm |
2003 Mitsubishi Diamante car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Mitsubishi Diamante problems, we found that the most common problems with these 2023 model year vehicles are:
- Visibility problems
- Engine and engine cooling problems
- Power train problems
- Service brakes problems
- Hydraulic problems
The graph below shows statistics for all 2003 Mitsubishi Diamante vehicle components and the number of complaints received.
Latest 25 complaints 2003 Mitsubishi Diamante
The NHTSA has received 69 complaints about various vehicle components related to the 2003 Mitsubishi Diamante. Below are the 25 most recent complaints reported for 2003 Mitsubishi Diamante vehicles.
TIRES PROBLEM
- Date Of Incident: 2018-09-12
- VIN: 6MMAP67P53T
- Components: TIRES
- Summary: TL* THE CONTACT OWNS A 2003 MITSUBISHI DIAMANTE EQUIPPED WITH COOPER CS3 TIRES (NA). WHILE DRIVING 25 MPH, AIR FROM THE VEHICLE'S FRONT DRIVER SIDE TIRE BEGAN TO BE RELEASED. THE CONTACT PULLED THE VEHICLE INTO A FUEL STATION/REPAIR SHOP WHERE THE TIRE WAS REPLACED. THE CONTACT TOOK THE VEHICLE TO THE INDEPENDENT MECHANIC THAT SOLD HIM THE TIRES. THE TIRES WERE MEASURED AND THE CONTACT WAS INFORMED THAT EACH OF THEM NEEDED TO BE REPLACED. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE TIRE SIZE WAS UNKNOWN. THE APPROXIMATE TIRE FAILURE MILEAGE WAS 198,000 AND THE VEHICLE FAILURE MILEAGE WAS 216,242.
POWER TRAIN PROBLEM
- Date Of Incident: 2011-07-01
- Components: POWER TRAIN
- Summary: TL* THE CONTACT OWNS A 2003 MITSUBISHI DIAMANTE. THE CONTACT STATED THAT THE HEATER CORE FLUID LEAKED ONTO THE CENTRAL COMPUTER AND CAUSED THE TRANSMISSION TO FAIL. IN ADDITION, THE GEAR SHIFTER COULD NOT BE RELEASED FROM THIRD GEAR. THE VEHICLE WAS NOT TAKEN TO THE DEALER. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE AND CURRENT MILEAGE WAS 164,000. THE VIN WAS NOT AVAILABLE.
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 2011-05-25
- VIN: 6MMAP67P33T
- Components: ENGINE AND ENGINE COOLING
- Summary: I HAVE A 2003 MITSUBISHI DIAMANTE LS WITH 71677 MILES ON IT ALL OF THE SUDDEN MY HUSBAND (THE PRIMARY DRIVER) TELLS ME THAT EVERY TIME HE GETS OUT OF THE CAR HE FEELS LIGHT HEADED AND NAUSEOUS. DAYS LATER THE FRONT WINDSHIELD STARTED FOGGING UP WHILE DRIVING AND AFTER TURNING THE CAR OFF (WHETHER IT IS WARM OR COLD OUTSIDE) I GOOGLED WHY WOULD THIS HAPPEN AND HAVE SPOKEN WITH A FEW MECHANICS AND THEY ARE TELLING ME THAT IT IS THE HEATER CORE GOING OUT, AND THAT THE REASON WHY MY HUSBAND IS GETTING LIGHT HEADED AND NAUSEOUS IS BECAUSE THERE IS ANTI-FREEZE COMING INTO THE INTERIOR OF THE CAR WHICH IS VERY DETRIMENTAL TO YOUR HEALTH. I HAVE READ A TON OF COMPLAINTS ON DIFFERENT WEBSITES AND THEY ALL SAY THE SAME THING. I CONTACTED MITSUBISHI CORPORATE TODAY AND SPOKE WITH A [XXX] IN CUSTOMER SERVICE AND EXPLAINED TO HER WHAT WAS GOING ON AND ASKED WHY MITSUBISHI HAS NOT DONE ANYTHING ABOUT THIS. FIRST BECAUSE OF THE HEALTH IMPLICATIONS, SECONDLY BECAUSE OF THE SAFETY ISSUE OF THE WINDSHIELD FOGGING UP WHILE YOU'RE DRIVING TO WHERE YOU CAN'T SEE AND THIRDLY THAT FROM READING THE COMPLAINTS, THE HEATER CORE IS RIGHT ABOVE THE COMPUTER IN THE CAR SO IF THE HEATER CORE IS LEAKING ANTIFREEZE, IT COULD FRY THE COMPUTER AND CAUSE A POSSIBLE CRASH IF THE CAR WERE TO STOP SUDDENLY. SHE SAID THAT "SEEING THAT I HADN'T HAD THE CAR INTO A DEALERSHIP IN THE LAST YEAR THAT THERE IS NOTHING THEY CAN DO ABOUT IT". I TOLD HER THAT IT JUST STARTED AND WHAT WAS I SUPPOSE TO DO, LOOK INTO MY CRYSTAL BALL AND KNOW A YEAR AHEAD OF TIME THAT THE HEATER CORE WAS GOING TO GO OUT. THIS IS LUDICROUS! ! ! MITSUBISHI KNOWS THAT THIS IS A SERIOUS ISSUE AND ARE NOT DOING ONE THING TO FIX IT (BY ISSUING A RECALL) WHERE DO WE DIAMANTE OWNERS GO TO GET SOME HELP? DO WE NEED TO FILE A CLASS ACTION LAWSUIT AS THAT SEEMS LIKE THE ONLY WAY A FIRE IS GOING TO GET LIT UNDER THEM (CORPORATIONS TEND TO ACT IF IT MEANS LOSING TONS OF MONEY) THE CAR CAN'T BE DRIVEN AND I'M STILL PAYING ON IT. HELP! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). *TR
FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 2011-02-01
- VIN: 6MMAP67PX3T
- Components: FUEL SYSTEM, GASOLINE
- Summary: TL* THE CONTACT OWNS A 2003 MITSUBISHI DIAMANTE. THE CONTACT STATED THE VEHICLE WAS CONSUMING EXCESSIVE AMOUNTS OF FUEL AND SHE WAS CONCERNED THE VEHICLE WOULD PREMATURELY RUN OUT OF FUEL WHILE DRIVING. THE VEHICLE WAS TAKEN TO AN INDEPENDENT REPAIR SHOP WHERE THE CONTACT WAS TOLD THAT THE INTAKE AIR TEMPERATURE SENSOR WOULD NEED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 60,000 AND THE CURRENT MILEAGE WAS 70,000.
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 2008-11-01
- VIN: 6MMAP87P33T
- Components: ENGINE AND ENGINE COOLING
- Summary: TL- THE CONTACT OWNS A 2003 MITSUBISHI DIAMANTE. THE CONTACT STATED THAT THE NEUTRAL LIGHT ON THE VEHICLE STARTED FLASHING ON AND OFF AND HE NOTICED A SMELL OF COOLANT. HE NOTICED THAT THE COOLANT WAS LEAKING ONTO THE FLOORBOARD OF THE VEHICLE. THE FAILURE PROGRESSES UNTIL THE VEHICLE WILL NOT START. THE VEHICLE WAS TAKEN TO A DEALER AND THE OWNER WAS ADVISED THE FAILURE WAS THE A.T. CONTROL RELAY. CODE P-1751. THE FAILURE HAS NOT BEEN REPAIRED. THE CURRENT AND FAILURE MILEAGE IS APPROXIMATELY 60,000. RD
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 2010-04-11
- Components: ENGINE AND ENGINE COOLING
- Summary: TL* THE CONTACT OWNS A 2003 MITSUBISHI DIAMANTE. THE CONTACT STATED HE NOTICED AN UNUSUAL ODOR OF COOLANT AND THE NEUTRAL INDICATOR BEGAN SPORADICALLY ILLUMINATING. UPON FURTHER INSPECTION, THE CONTACT FOUND COOLANT LEAKING ONTO THE FLOORBOARD. IN ADDITION, THE VEHICLE WOULD INTERMITTENTLY FAIL TO START. THE DEALER PERFORMED A DIAGNOSTIC TEST AND DETERMINED THE FAILURE WAS CAUSED BY THE A.T. CONTROL RELAY AND PRODUCED CODE P1751. THE VEHICLE WAS NOT REPAIRED AND THE VIN WAS NOT AVAILABLE. THE FAILURE AND CURRENT MILEAGES WERE APPROXIMATELY 60,000. UPDATED 10/27/10. *LJ
VISIBILITY PROBLEM
- Date Of Incident: 2010-03-19
- VIN: 6MMAP87P53T
- Components: VISIBILITY
- Summary: INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6). THIS CONCERNS MY 2003 MITSUBISHI DIAMANTE. IT HAS LESS THAN 50,000 MILES ON IT AND IT HAS SUDDENLY STARTED SPEWING A LIGHT FILM ON THE INSIDE OF MY FRONT WINDSHIELD SO THAT I CANNOT SEE WELL...AND NOT AT ALL WHEN I AM HEADED INTO THE SUN. I HAVE CHECKED ON THE INTERNET AND A LOT OF PEOPLE ARE HAVING THE SAME PROBLEM WITH MITSUBISHI DIAMANTES GOING BACK SEVERAL MODEL YEARS. ALL DIAMANTES NEED TO BE RECALLED AND THE HEATER CORE AND/OR ITS O RINGS FIXED OR REPLACED. IF THIS DOESN'T HAPPEN, PEOPLE WILL DIE WHEN THEY SUDDENLY CANNOT SEE THE ROAD THROUGH THEIR FRONT WINDSHIELD. [XXX] *TR *DT
ENGINE AND ENGINE COOLING,VISIBILITY PROBLEM
- Date Of Incident: 2010-01-01
- VIN: 6MMAP67P33T
- Components: ENGINE AND ENGINE COOLING,VISIBILITY
- Summary: I HAVE A 2003 MITSUBISHI DIAMANTE WITH 60,000 PLUS MILES. FOR THE PAST SEVERAL MONTHS I HAVE NOTICED A STRONG SMELL OF ANTI-FREEZE COMING FROM THE VENTS AND THE WINDOWS CONSTANTLY FOGGING UP, SOMETIMES TO THE POINT THAT I CANNOT SEE TO DRIVE. I HAVE READ MANY SIMILAR COMPLAINTS AND AGREE WITH OTHERS THAT MITSUBISHI NEEDS TO ISSUE A RECALL FOR THE HEATER CORE, AS I AM SURE THIS IS THE PROBLEM. I HAVE YET TO TAKE MINE IN TO GET IT REPAIRED, SO I DON'T HAVE A COST QUOTE AT THIS TIME. *TR
ENGINE AND ENGINE COOLING,VISIBILITY PROBLEM
- Date Of Incident: 2009-11-04
- VIN: 6MMAP67P73T
- Components: ENGINE AND ENGINE COOLING,VISIBILITY
- Summary: ANTI-FREEZE LEAK ON CARPET PASSENGER SIDE NEAR FIREWALL FOGGED UP WINDOWS CHECK ENGINE LIGHT COMES ON AND OFF DUE TO THE LEAK THE ECU STARTED WORKING AWFUL. *TR
ENGINE AND ENGINE COOLING,FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 2006-01-21
- VIN: 6MMAP67P73T
- Components: ENGINE AND ENGINE COOLING,FUEL SYSTEM, GASOLINE
- Summary: I PURCHASED A USED 2003 MITSUBISHI DIAMANTE FROM BANKSTON DODGE IN 2007. IT WAS CLEAN AND RAN WELL. THERE WAS AN UNUSUAL ODOR INSIDE, BUT SMELLED AS IF IT COULD HAVE BEEN WHAT THE DEALERSHIP USED TO CLEAN THE INSIDE. IT TURNED OUT TO BE ANTI-FREEZE. THE VEHICLE HAD A HEATER CORE LEAK PRIOR TO OUR PURCHASE. RECENTLY THE GAS GAUGE HAS STOPPED WORKING. *TR
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 2008-07-10
- Components: ENGINE AND ENGINE COOLING
- Summary: I OWN A 2003 DIAMANTE WITH ABOUT 60,000 MILES ON IT. MY WINDOWS CONTINUALLY FOG UP WHILE DRIVING OR PARKED AND THE DEFROSTER/VENTS DOES NOT ELIMINATE THE FOG AT ALL, MAKING DRIVING VERY DIFFICULT AND DANGEROUS ESPECIALLY IN RAINY WEATHER AND DURING THE NIGHTTIME. THE SMELL OF ANTIFREEZE IS EXTREMELY STRONG INSIDE THE VEHICLE. I HAD A PROBLEM WITH MY TRANSMISSION SHIFTING AND THE LIGHT AROUND THE "N" ON THE INSTRUMENT PANEL WAS FLASHING. THE MECHANIC SAID MY HEATER CORE WAS LEAKING COOLANT ONTO THE TRANSMISSION CONTROL MODULE CAUSING IT TO MALFUNCTION. I WAS TOLD THAT EVEN THOUGH I PAID FOR AND HAVE AN EXTENDED WARRANTY ON THIS VEHICLE IT WOULD NOT BE COVERED BECAUSE THE HEATER CORE LEAKING IS WHAT CAUSED THE TRANSMISSION CONTROL MODULE TO FAIL. THE HEATER CORE WAS REPLACED ALONG WITH THE CONTROL MODULE AND THE RELAY WITH A COST OF OVER 2,500 DOLLARS. IT SEEMS LIKE A PROBLEM LIKE THIS THAT IS EXTREMELY COMMON IS THESE VEHICLES, CREATES SAFETY AND HEALTH HAZARDS, AND VERY EXPENSIVE TO FIX SHOULD BE RECALLED AND COVERED UNDER WARRANTY. *TR
VISIBILITY PROBLEM
- Date Of Incident: 2008-10-01
- VIN: 6MMAP87P93T
- Components: VISIBILITY
- Summary: HEATER CORE LEAKAGE CAUSING SMOKE AND ANTIFREEZE ODOR TO COME OUT OF CAR VENTS AND UNDERNEATH DASH BOARD (PASSENGER SIDE). THERE IS A RISK OF ACCIDENT, PERSONAL INJURY, OR DEATH BECAUSE USE OF A/C, HEATER, AND DEFROST IS NOT AVAILABLE WHEN WINDSHIELDS AND WINDOWS FOG UP. *TR
ENGINE AND ENGINE COOLING,POWER TRAIN PROBLEM
- Date Of Incident: 2008-08-09
- VIN: 6MMAP67P73T
- Components: ENGINE AND ENGINE COOLING,POWER TRAIN
- Summary: I OWN A 2003 MITSUBISHI DIAMANTE, AROUND 60K MILES I STARTED NOTICING A SWEET SMELL FROM THE VENTS AND A CONSTANT FOG WHEN THE HEAT OR AIR WAS TURNED ON IN THE CAR. AFTER TAKING MY CAR TO THE MECHANIC I WAS TOLD THAT MY HEATER CORE WAS BUSTED. MY CAR ALSO SDRIVING IN "SAFE MODE" MEANING I CAN ONLY RUN IN SECOND GEAR WHICH IS BURNING A TANK OF GAS EVERY THREE DAY, I LOVE 10 MILES FROM WORK. MY CAR FLASHED IN NEUTRAL WILL IN DRIVE. AFTER RESEARCHING MY PROBLEMS I'VE NOTICE WELL OVER 1000 POSTED VIA INTERNET FROM OTHER MITSUBISHI DIAMANTE OWNERS HAVING THE SAME ISSUE. ITS HARD TO BELIEVE THIS VEHICLE HAS NOT BE RECALLED. THERE ARE GREAT RISKS OF INHALING ANTI FREEZE WHICH IS SEEPING INTO THE CAR THROUGH THE FLOOR BOARDS AND VENTS. I HAVE AN ASTHMATIC CHILD WHO HAS BEEN DRIVING IN THE CAR UNTIL THE PROBLEM WAS BROUGHT TO MY ATTENTION. THIS LEAK MAY ALSO MAKE THE COMPUTER SYSTEM IN THE VEHICLE GO OUT. SOMETHING NEEDS TO BE DONE BEFORE AN ACCIDENT IS CAUSED OR A LIFE IS TAKEN. *TR
ENGINE AND ENGINE COOLING,POWER TRAIN PROBLEM
- Date Of Incident: 2008-04-28
- VIN: 6MMAP87P63T
- Components: ENGINE AND ENGINE COOLING,POWER TRAIN
- Summary: MY TRANSMISSION RELAY WENT OUT DUE TO A LEAK HEATER CORE. THE CORE HAS BEEN LEAKING FOR SOME TIME AND HAS FOGGED MY WINDOWS SO BAD I COULD NOT SEE AT TIMES, HAVING TO PULL OVER AND WIPE OFF THE FILM. THIS IS A SERIOUS PROBLEM WITH THESE CARS. *TR
ENGINE AND ENGINE COOLING,POWER TRAIN PROBLEM
- Date Of Incident: 2007-11-28
- VIN: 6MMAP67P23T
- Components: ENGINE AND ENGINE COOLING,POWER TRAIN
- Summary: I OWN A 2003 DIAMANTE MITSUBISHI. THE PROBLEM STARTED WITH A CHECK ENGINE LIGHT COMING ON, FOGGING THE WINDOW WITH A FOWL TOXIC SMELL THEN THE CAR WOULD NOT HARDLY MOVE OUT GEAR. I WAS TOLD THAT THE CAR'S HEATER CORE LEAKED ONTO THE COMPUTER WHICH CAUSED THE TRANSMISSION RELAY TO SHORT OUT DO TO THE COMPUTER FAILING. THE COMPUTER WAS STILL UNDER WARRANTY AT 78,000 MILES BUT I STILL HAD TO PAY FOR THE NEW COMPUTER SYSTEM BECAUSE I WAS TOLD THAT IT WAS THE HEATER CORE THAT CAUSED THE COMPUTER TO FAIL. THIS IS SUCH A POOR DESIGN! THE COMPUTER SHOULD HAVE BEEN PROTECTED IN SUCH A CASE...FUNNY THING IT IS NOW THAT I HAVE HAD TO REPLACE A HEATER CORE, A COMPUTER AND A TRANSMISSION RELAY AT A CUT WRENCHING COST OF $3,675.58. I WROTE A LETTER TO THE PRESIDENT OF NORTH AMERICA MITSUBISHI THAT THE HEATER CORE SHOULD BE A RECALL BUT TO NO AVAIL. I HAVE ALL MAINTENANCE RECORDS ON THE DIAMANTE SO THAT WAS NOT WHAT CAUSED THIS HEATER FAILURE. I DO HAVE THE COMPUTER THAT WAS REPLACED. IT IS NOW APRIL AND THE CHECK ENGINE LIGHT HAS COME BACK ON...NOW WHAT? AJ *TR
ENGINE AND ENGINE COOLING,VISIBILITY PROBLEM
- Date Of Incident: 2008-03-20
- VIN: 6MMAP67P93T
- Components: ENGINE AND ENGINE COOLING,VISIBILITY
- Summary: I HAVE 2003 MITSUBISHI DIAMANTE. MY "CHECK ENGINE" LIGHT CAME ON, SO I TOOK IT IN FOR SERVICE, AND MY HEATER CORE WAS LEAKING ON MY COMPUTER...NOW IT'S GOING TO COST ME AROUND 3,500 DOLLARS....THIS IS A VERY FLAWED DESIGN. THERE SHOULD BE A RECALL ON THIS ITEM. *TR
VISIBILITY PROBLEM
- Date Of Incident: 2008-03-29
- Components: VISIBILITY
- Summary: DRIVING ALONG AND WINDOWS STARTED TO FOG UP, AND STARTED SMELLING A ODD ODOR. FOUND OUT MY HEATER CORE WAS BAD. APPARENTLY CRACKED FOR NO REASON. RIGHT NOW BY-PASSED THE HEATER CORE BECAUSE MITSUBISHI DEALER QUOTED $1,800.00 TO FIX IT. IT APPEARS TO BE A BIG PROBLEM WITH THE DIAMANTE'S. *TR
VISIBILITY PROBLEM
- Date Of Incident: 2005-09-25
- Components: VISIBILITY
- Summary: I BOUGHT AN 2003 MITSUBISHI DIAMANTE IN 2005. MY WIFE AND I NOTICED AN OCCASIONALLY "SYRUP" SMELL, BUT DIDN'T THINK MUCH OF IT. THIS WEEK END (MARCH 08)ANTI-FREEZE (COOLANT) BEGAN TO COME OUT OF THE VENTS IN A MIST. IT EVEN TURNED THE BOTTOM HALF OF MY FRONT WINDSHIELD GREEN CREATED A FILM ON THE WINDOWS WHICH MADE IT HARD TO SEE. I HAVE A NEW BORN CHILD THAT IS NOW SICK AS WELL MYSELF AND MY 2 1/2 YEAR OLD. THEY HAVE A DOCTORS APPOINTMENTS TOMORROW AND I HOPE THEY ARE NOT SICK FROM THE CAR. ESTIMATED COST TO FIX WAS ABOUT $1150. *TR
VISIBILITY PROBLEM
- Date Of Incident: 2007-11-27
- VIN: 6MMAP67P43T
- Components: VISIBILITY
- Summary: I OWN A 2003 MITSUBISHI DIAMANTE LS WITH 70,000. I PURCHASED THE CAR FROM THE DEALERSHIP BRAND NEW. IN NOVEMBER 2007, THERE WAS A STRONG SMELL OF ANTIFREEZE IN THE CAR. AFTER SOME INVESTIGATION, IT WAS DISCOVERED THERE WAS A LEAK IN THE HEATING CORE, WHICH WAS CAUSING THE ANTIFREEZE TO LEAK OUT OF THE COMPARTMENT AND INTO THE CABIN OF THE CAR...NEEDLESS TO SAY, THE CAR IS UNDRIVEABLE BECAUSE OF THE HEALTH RISKS ASSOCIATED WITH BREATHING ANTIFREEZE. ESTIMATED REPAIRS ARE AROUND $1500. THIS IS COMPLETELY RIDICULOUS!!!! I AM OUTRAGED TO SEE THAT SO MANY 2003 DIAMANTE OWNERS ARE HAVING THE SAME PROBLEM. I BELIEVE AN INVESTIGATION NEEDS TO BE CONDUCTED, AND MITSUBISHI MOTORS SHOULD BE HELD ACCOUNTABLE FOR THIS!!! *TR
VISIBILITY PROBLEM
- Date Of Incident: 2007-12-19
- VIN: 6MMAP67P73T
- Components: VISIBILITY
- Summary: 37813 MILES. HEATER CORE LEAKING. NOTICE THE SWEET SMELL AND NOW OVERHEATING OCCURS. *TR
ENGINE AND ENGINE COOLING,VISIBILITY PROBLEM
- Date Of Incident: 2007-11-13
- VIN: 6MMAP67P33T
- Components: ENGINE AND ENGINE COOLING,VISIBILITY
- Summary: THIS IS A MITSUBISHI DIAMANTE 2003 ES. I'M EXPERIENCING A SWEET SMELL OF ANTI-FREEZE INSIDE THE CAR AS SOON AS I TURN ON HEATING. ANTI-FREEZE CONTAINS ETHYLENE GLYCON AND THE FUMES ARE HIGHLY TOXIC. FIXING THE HEATER CORE WILL COST $1300. I AM FILING THIS COMPLAINT TO ASCERTAIN THAT THIS IS A VERY VERY COMMON PROBLEM IN MITSUBISHI DIAMANTE AND MITSUBISHI MOTORS SHOULD BE AWARE OF THREE MAIN RISK ASSOCIATED WITH THIS: (1) THE DEFECT EXPOSES CUSTOMERS TO UNUSUAL LEVEL OF TOXIC ETHYLENE GLYCOL WHICH SHOULD NOT EXCEED 10-25 PPM LEVELS (CONSULT MSDS FOR ETHYLENE GLYCOL) (2) THE LEAK CAN AFFECT THE CAR'S MICROPROCESSOR AND POSES A SEVERE HAZARD FOR DRIVERS. (3) FAULTY HEATER CORE MAKES THE VISIBILITY DIFFICULT DUE TO FOGGING OF WINDSHIELD THUS PUTTING THE DRIVER AT GREATER RISK. I WILL EVENTUALLY FIX THE PROBLEM BY SPENDING $1300 IF MITSUBISHI REFUSES TO ISSUE A RECALL. RIGHT NOW I AM TRYING SOME RADIATOR ANTI-LEAK TO DELAY THE COSTLY REPAIR. BUT I WANT NHTSA TO BE AWARE OF THE HAZARDS THAT HAS BEEN IGNORED BY THE MANUFACTURER. *TR
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 2007-11-05
- VIN: 6MMAP67P83T
- Components: ENGINE AND ENGINE COOLING
- Summary: 2003 DIAMANTE ISSUES. STARTED SMELLING A SYRUPY TYPE SMELL, COOLANT SMELL THROUGHOUT THE CABIN AND HAD FUMES ESCAPING THROUGH THE VENT IN THE CAR. COOLANT LEVEL DROPPING WITH NO VISIBLE SIGNS ON THE GROUND. LOOKS TO BE THE HEATER CORE. NOTHING HAS BEEN DONE YET. SEEN MULTIPLE COMPLAINTS REGARDING THE SAME ISSUE AND ON THIS SITE. WONDERING WHY SO MANY COMPLAINTS HAVE BEEN SENT, BUT NOTHING DONE YET? *TR
VISIBILITY PROBLEM
- Date Of Incident: 2007-09-01
- VIN: 4A3AA46G13E
- Components: VISIBILITY
- Summary: IN RESEARCHING WHAT MIGHT BE WRONG WITH MY MITSUBISHI GALANT HEATER, I FIND IT IS A COMMON PROBLEM DESCRIBED TO THE TEE. NOT HAVING HEAT IN MY CAR AND LIVING IN THE PACIFIC NORTHWEST COULD PROVE TO BE DANGEROUS FOR MYSELF AND OTHERS AS VISIBILITY AND FREEZING WILL OCCUR AS I HAVE TO RUN THE COLD AIR ON MY WINDSHIELD TO SEE. *TR
VISIBILITY,EQUIPMENT PROBLEM
- Date Of Incident: 2007-09-26
- Components: VISIBILITY,EQUIPMENT
- Summary: HEATER CORE (AND A/C CONDENSATE) LEAKS INTO PASSENGER COMPARTMENT CAUSING WINDOW TO "FOG UP". THIS COULD BE VERY DANGEROUS AS IT IMPAIRS THE DRIVERS SIGHT. *TR
VISIBILITY PROBLEM
- Date Of Incident: 2007-02-17
- Components: VISIBILITY
- Summary: REGULAR USE. FAILURE CAUSES AN ODOR INSIDE THE VEHICLE AND A FILM WHICH INHIBITS VISIBILITY ON THE WINDSHIELD. *TR
2003 Mitsubishi Diamante recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 2003 Mitsubishi Diamante.
- Manufacturer: MITSUBISHI CARIBBEAN
- Components: EQUIPMENT:OTHER:LABELS
- Summary: CERTAIN PASSENGER VEHICLES FAIL TO CONFORM TO THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 208, 'OCCUPANT CRASH PROTECTION.' THE BILINGUAL ENGLISH/SPANISH REMOVABLE AIR BAG WARNING LABELS AFFIXED TO THE DASH AND TO THE SUNVISOR DO NOT MEET THE SIZE REQUIREMENTS OF THE STANDARD.
- Consequence: THIS DOES NOT MEET THE REQUIREMENTS OF THE STANDARD.
- Remedy: MITSUBISHI CARIBBEAN WILL MAIL A CUSTOMER NOTIFICATION LETTER CONTAINING A WRITTEN DESCRIPTION AND A GRAPHIC OF THE BI-LINGUAL DASHBOARD AIR BAG WARNING LABEL. IN ADDITION, ALL CURRENT 2000-2004 NATIVA OWNERS WILL ALSO RECEIVE REPLACEMENT AIR BAG ALERT LABELS FOR THE SUN VISORS. THIS RECALL IS EXPECTED TO BEGIN DURING MARCH OR APRIL 2005. THE NOTIFICATION TO THE NATIVA OWNERS IS EXPECTED TO BEGIN DURING APRIL OR MAY 2005. OWNERS SHOULD CONTACT MITSUBISHI CARIBBEAN AT 1-787-251-8715.
- Manufacturer: MITSUBISHI MOTORS NORTH AMERICA, INC.
- Components: EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
- Summary: CERTAIN SPORT UTILITY AND PASSENGER VEHICLES FAIL TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 225, "CHILD RESTRAINT ANCHORAGE SYSTEMS." THE OWNER'S MANUAL DOES NOT CONTAIN A STEP-BY-STEP DESCRIPTION FOR HEADREST ADJUSTMENT WHEN INSTALLING A CHILD RESTRAINT SYSTEM (CRS) TETHER STRAP.
- Consequence: IF THE TETHER STRAP IS IMPROPERLY INSTALLED TO THE TETHER ANCHOR, THE CHILD SAFETY SEAT MAY NOT BE SUFFICIENT RESTRAINED. IN THE EVENT OF A CRASH, THE CHILD COULD BE INJURED.
- Remedy: A LETTER OUTLINING THE PROBLEM WILL BE SENT TO OWNERS ALONG WITH A STICKER CONTAINING THE CORRECT INSTRUCTIONS AS WELL AS INSTRUCTIONS ON WHERE TO AFFIX THE STICKER IN THE OWNER'S MANUAL. THE RECALL BEGAN ON MARCH 29, 2004. OWNERS SHOULD CONTACT MITSUBISHI AT 1-888-648-7820.
Negative 2003 Mitsubishi Diamante car reviews
Positive 2003 Mitsubishi Diamante car reviews
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Bestkept secret. Glad not to see them all over the road. Much better ride than rated. Stylish interior. Incredible sound system. Best bang for the buck. Mitsu didn't market them properly. Why pay much more for Lexus 300.
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I had a Cadillac Catera Sport previously and I must say that the VR-X is a better vehicle. The engine is smooth and powerful, and it handles great for a front-wheel drive. I did not experience any body roll on curves, and it still has a good ride. The only thing I would say is that I think the steering is a little too light.
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Wow, it sounds like you've got a great car on your hands! With 137K on the clock and only having to replace the brakes and tires, it's clear that this car is built to last. I completely agree that the Bridgestone Insignia s-200's are a fantastic replacement for the Goodyears it came with, and they really improve the ride quality. The car has plenty of power, and if you use synthetic oil, you can get an impressive 22mpg in town and even better on the highway. Since switching to synthetic oil, you've consistently been getting 22mpg in town, which is amazing whether you're driving like a speed demon or taking it easy. This car strikes the perfect balance between sports car and luxury car, offering both style and pep as well as a smooth ride. In fact, it's the closest thing you can get to a BMW or a Mercedes for just 30 grand. Compared to the Camry and Accord, this car feels like a true luxury vehicle.
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I love my 2003 Mitsubishi Diamante! It has all the creature comforts that I was looking for. When I drive by ladies with the Infinity stereo blasting loud, they always give me the eye. I love the feel of the leather seats. This car is the best! I wish I could live in it.
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Best car I've ever owned!
Additional sources
More sources of information about 2003 Mitsubishi Diamante problems:
2003 Mitsubishi Diamante Problems and Complaints - 5 Issues
Top 2003 Mitsubishi Diamante Problems · The automatic transmission may fail prematurely. 44 people have reported this · Coolant Leak From Heater Core. 38 people ...
Things To Check Before Buying A Diamante. Most Common ...
Aug 30, 2010 ... Land vehicle Vehicle Car Center console Mitsubishi diamante ... Common Problems With Lpg System. My LPG stopped working on my van, i was wondering ...
Getting a early 2000s Mitsubishi Diamante as first car? : r/newzealand
Jun 4, 2021 ... Would a early 2000s(2002/2003/2004) Mitsubishi Diamante ... common so get any ... engine or driveline (pulleys, sensors etc) that were the problem.
2003 Mitsubishi Diamante Repair: Service and Maintenance Cost
The automatic transmission may fail prematurely requiring overhaul or replacement of the transmission. ... A coolant leak may develop from the heater core, ...
2003 Mitsubishi Diamante Consumer Reviews | Cars.com
Comfort 4.6; Interior 5.0; Performance 5.0; Value 5.0; Exterior 4.5; Reliability 5.0.
Other years of Mitsubishi Diamante
Are you having problems with your 2003 Mitsubishi Diamante?
Johnny Reichert 2024-11-29
I hope you're doing well! I wanted to share my experience with my Diamante. When I test drove it, I fell in love with the car. However, I did want to give you a heads up that the insurance rates for this car are quite high, even for a 5-year-old car. It may be worth getting an insurance quote before making a purchase. Additionally, the car gets around 19 mpg on the highway, which can be tough with the current gas prices. Personally, I've decided to trade it in for a car with cheaper insurance and better gas mileage. Despite these drawbacks, the car has a really nice style and runs smoothly. I should note that it doesn't perform very well in snow or slush, and parts and labor can be more expensive. I hope this information is helpful to you!
Torrey Rolfson 2024-09-13
The car looks the same, just with a different name. However, the built quality appears to have improved.
Rogers Paucek 2024-07-26
The 2003 Mitsubishi Diamante looks great and definitely has a high 'coolness factor'. However, the build quality is not up to par. As someone who has previously owned Toyotas, I am used to cars being tight and relatively maintenance-free. Unfortunately, this car has had constant rattles in the interior, the console is made of cheap plastic materials, and at only 13,000 miles, the front rotors were already warped (not covered under warranty). Additionally, I have noticed three rust spots on the hood (not covered under warranty), a squeak when turning sharply (which the dealer can't seem to find), and in cold weather, the door takes about ten slams to get it to close correctly. Lastly, the glove box has somehow sagged. Unfortunately, the car is now worth less than half of what I paid for it (no seriously, in less than two years it depreciated by $16,000).
Clyde Dach 2024-05-19
The ride of the Diamante improved significantly with the addition of Goodyear Assurance tires. Overall, it is a pretty good value for the money. Although it had some initial glitches and required several days at the dealer to fix noises and adjust things, it has proven to be reliable. Currently, I am having trouble finding patch paint and misc. parts, but I am confident that I will be able to find them eventually. While I would like more power, it is adequate as is. During a recent trip to the East, I achieved a low of 22 and a high of 29 mpg, averaging 26.54 mpg at 70+ mph all the way. I am pleased with the performance. I will probably keep this car for a while as my
Rosendo Keebler 2024-05-12
I recently had the opportunity to test drive the 2003 Mitsubishi Diamante, but unfortunately, it did not meet my expectations. Although I can see why some people may have been interested in this car, it did not suit my needs. However, I did find a car that I really enjoyed - the 2006 BMW 7-Series. It has great handling, comfortable interior, and a sleek exterior. If you're in the market for a new car, I highly recommend checking it out!