Launched in 1989 to broaden Mitsubishi's range and strengthen its presence in North America, the Mitsubishi Eclipse was produced until 2012 across four generations, all petrol-engined, with power outputs ranging from 92 to 265 bhp. From the outset, it was offered with both manual and automatic gearboxes. Here is how the Mitsubishi Eclipse gearbox works, how to maintain it, and how to repair it.
How the Eclipse Gearbox Works
On the first two generations, the engines were paired with either conventional manual or automatic gearboxes. The manual gearbox is operated via the gear lever and clutch pedal: the clutch disengages the engine from the drivetrain, the driver selects a gear, and the gears adjust the ratio between engine speed and wheel speed. The automatic gearbox, meanwhile, uses a torque converter and planetary gearsets assisted by brakes and clutches to change gear without any driver input.
From the third generation onwards, the Sportronic gearbox appeared, combining the best of both worlds: a manual mode allows the driver to select gears using steering-wheel-mounted paddles. This gearbox featured notably on the top-of-the-range versions.
Careful Maintenance Above All
To function properly, your Eclipse's gearbox requires the right lubrication. Check the transmission fluid level regularly and top it up if necessary — many unusual noises are simply down to low oil. Also check the condition of the fluid, as dirty oil no longer protects the internal components; a fluid change is then required, generally around every 100,000 km. Finally, periodic inspection by a specialist — who checks the fluid and components and replaces any worn parts — can prevent a great many breakdowns.
Repairing the Eclipse Gearbox
Some symptoms can be spotted yourself. Difficulty changing gear points to worn clutches or linkage; a puddle of fluid under the car indicates a leak; a gear jumping out suggests a synchroniser problem. If you notice any of these signs, it is best to take the vehicle to a competent mechanic, as the work involved is complex. If you have the tools and experience, you will need to remove the gearbox first, then inspect the seals as a priority, followed by the gears and other components, before replacing the faulty part.
Replacing Your Eclipse Gearbox
Replacement becomes the better option after a serious impact, widespread wear, or when the part that needs changing is too costly to source. Our automatic and manual gearboxes are fully reconditioned by our experts, who verify that they are working correctly before dispatch. Under the exchange scheme, your old gearbox is taken back to be reconditioned in turn.
Frequently Asked Questions
What is the Sportronic gearbox? An automatic gearbox offering a manual mode controlled by steering-wheel paddles, introduced from the third generation of the Eclipse onwards.
How do I recognise a gearbox oil leak? By fluid marks under the vehicle, often accompanied by unusual noises or difficulty changing gear.
When should I replace rather than repair? After an impact, widespread wear, or when the required part is too expensive to obtain.
Will a fluid change fix the noises? Sometimes: low or dirty oil is often the cause, but only a proper diagnosis will confirm it.
Why Choose EDEN BOITES?
A sporting coupé with a strong character, the Eclipse demands a transmission that can match it. EDEN BOITES reconditions and tests every gearbox to restore it to its full performance.
- Reconditioned gearboxes tested by our technicians before dispatch;
- A warranty of up to 24 months depending on the reference;
- Pay in up to 10 instalments to spread the cost;
- Delivery throughout France and the European Union, with a lead time confirmed on quote;
- A satisfaction guarantee on the exchange, subject to our Terms and Conditions;
- Collection of your old gearbox as part of the exchange, for responsible recycling.
To browse the references available for your vehicle and get a personalised quote, visit our Mitsubishi gearbox collection.
Explore our gearbox collection, our guides on the Mitsubishi Eclipse Cross gearbox and the Mitsubishi Galant gearbox, as well as our in-depth article on the differences between a manual and an automatic gearbox.
