Mitsubishi Motors Corporation is one of Japan's oldest automakers and is among the country's oldest companies that are still active today. So it's no surprise that they have been making some of the best Japanese cars that we see nowadays. One of their biggest hits was the Mitsubishi Diamante, a full-size vehicle that was sold and manufactured from 1990 up to 2005. The name is actually Spanish for diamond, and it shows that it is indeed a very luxurious vehicle that lives up to its name. The Diamante actually inspired other companies to form their own luxury cars or start subsidiary luxury brands like Lexus and Infiniti.
The first Mitsubishi Diamante was a Japanese exclusive. It was a four-door hardtop with no window sashes and was powered by a V6 engine. It was fitted with top-of-the-line electronics and accessories making it one of the best vehicles in the market at the time. It was so good, that it won the Japan Car of the Year award back in 1990. It would take 2-years before the Diamante was made available in the U.S. where it replaced the previous generation Mitsubishi Galant. Later on, it was also sold in other countries under different names like the Mitsubishi Verada and Mitsubishi Magna.
The North American version of the Mitsubishi Diamante was actually a mixture of the variants that were produced in Japan and Australia. It shared some of the original Japanese parts and accessories but only came in two trim levels. Standard Mitsubishi Diamante parts included central locking, driver's airbag, power windows and power mirrors while ABS, cruise control, and a sunroof were optional add-ons. Declining sales prompted Mitsubishi Motors to cease production of the Diamante in 2005 and it was then replaced a newer generation Mitsubishi Galant. Despite this, owners can still get aftermarket parts and accessories for the vehicle due to its popularity worldwide.
Four Maintenance Tips for Your Mitsubishi Diamante
The Mitsubishi Diamante was a midsize luxury sedan manufactured by Mitsubishi Motors from1990 to 2005. Its name came from the Spanish, Portuguese, and Italian words for diamond. The Mitsubishi Diamante made its debut in the US in 1992. It was the Japanese automaker's flagship sedan in the US. The Diamante was acclaimed for its ride quality and quietness, although it did have a propensity for heater core issues. To make your Diamante last longer, here are some important maintenance tips you can do:
- Apply stop leak on the radiator.
The Diamante is notoriously known for heater core problems such as coolant leak and foggy windows and windshield. Unfortunately, to date, a recall still has not been issued to address this flaw. Check for leaks on the heater core O-rings by looking under the center of the dash from the driver's side. If you do see leaks, you can put stop leak on the radiator. However, if this doesn't do the trick, you would need to replace the faulty heater core with a new one. Removing the heater core is quite an expensive job order though—unless you plan on doing it yourself.
- Keep tabs on lubrication.
Keeping your Diamante well-lubricated is vital in making its engine last longer. Replace your old or missing oil filler cap so that oil will not leak out of the top of the engine, which causes a high-viscosity breakdown. Also, don't pass up on replacing your oil filter if needed because without it, the engine oil would become increasingly dirty, highly viscous, and ineffective. If you see glitches in your oil pressure sender and switch, don't ignore it for too long. A faulty oil pressure sender and switch needs to be replaced because this component sends data to the engine control module that it uses to adjust how other components perform.
- Check the shock absorbers.
Although your Diamante has tough shock absorbers, these shock absorbers will eventually deteriorate through time. Inspect your shock absorbers every 12 months or 12,000 miles and replace them if necessary. If you hear a loud clunking or rattling sound from your Diamante, this could indicate faulty shock absorbers. Worn-out shock absorbers will also cause uneven tire wear. This is because road traction is reduced when shock absorbers are faulty. Also, another sign of possibly worn-out shock absorbers is experiencing an extremely bouncy ride after you've gone over a speed bump.
- Identify the serial number of the radio.
If you ever have to remove or replace your Diamante's battery, the radio would need a code entered to it to activate it again when you put the old or new battery in. The serial number on top of the radio is needed to find the radio code needed to activate your radio again. In order for the serial number to be obtained, the radio has to be removed. Removing the radio is a difficult task though, so brace yourself if you opt to do this on your own instead of letting a dealer do it for you.
Mitsubishi Diamante: Shining for 15 Years in 3 Continents
With a diamond attached to its name, it’s no wonder that the Mitsubishi Diamante spells nothing but luxury inside and out. This full-size vehicle was actually created to compete with the Honda Legend—a mid-size luxury car that was introduced to the market in 1985. It also replaced the Mitsubishi Magna, serving as a second-generation version of this Galant-Sigma based car. Here’s a quick look at the Mitsubishi Diamante from its inception, success, and demise.
First generation: Arriving in Japan, Australia, and the U.S.
The Mitsubishi Diamante was introduced to the market in the 1989 Tokyo Motor Show and sales immediately began in the spring of the following year. On initial release, the model was a four-door hardtop and it had frameless windows. It was available with three types of V6 engines with varying fuel capacities—2.0 L, 2.5 L, and 3.0 L. It was also available in three body types—a four-side window sedan, a six-side window sedan, and a wagon. Compared to its contemporaries, the four-side window Diamante sedan did not feature rear quarter windows. Instead, its side glasses were found in its doors. The six-side window sedans and wagons, on the other hand, were manufactured in Australia and they looked a lot like the Mitsubishi Magna that preceded them. On its first year, the Diamante instantly became the pride and joy of Mitsubishi when it was awarded Car of the Year in Japan.
The Diamante reached the American shores in 1992 and the models that reached the U.S. came from both Japanese and Australian assembly lines. The car was initially available in two trim levels, and they were all automatic, front-wheel drive vehicles. One of the trims available was the ES, which was powered by a 3.0 L 6G72 SOHC V6 engine. This trim came with standard features like power windows and mirrors, cruise control, driver’s airbag, etc. The other trim available in the American market was the LS, which was backed by a 3.0 L 6G72 DOHC V6 engine. This trim came with alloy wheels, a manual roof, ABS, etc.
Second generation: Changes and makeovers
The second generation of Diamantes was introduced to the Japanese market in January 1995. The new model noticeably had better headroom and it was still available in different types of engines. Just like its first generation, the new and improved Diamante was packed with new gadgets such as a satellite navigation system, distance-keeping system, and a 5-speed automatic transmission that came with a transverse drivetrain. The new generation of Diamantes arrived in the U.S. two years after in 1997. And in 2002 and 2004, the car received an exterior makeover until sales stopped in America due to its poor performance in the market. The Diamante was sold until 2005 and it was later replaced by the new GTS trim of the Galant.