Unstable operation of the PRV V6 engine in combination with a leaky intake manifold is the first thing the owner of the legendary DeLorean DMC-12 when trying to start the car after a long period of inactivity. Instead of the expected roaring start from the movie Back to the Future, the enthusiast often gets only spastic starts and the smell of unburned fuel, which becomes the harsh reality of owning this iconic car. Problems with the fuel system and complex settings of carburetors or injectors (depending on the year of manufacture) require a deep understanding of the design, since standard diagnostic methods do not always work effectively here.
The stainless steel body, which became the calling card of the model, in practice turned out to be not only an aesthetic solution, but also a source of specific problems with corrosion of hidden structural elements. DeLorean Motor Company used galvanically dissimilar metals, connecting steel panels to an aluminum frame, which under operating conditions led to electrochemical corrosion at the fastening points. The owner must constantly monitor the condition of the insulating gaskets and the tightness of the joints, otherwise restoration may require complete disassembly of the body.
Gullwing doors that open upward create unique demands on parking space and the condition of the torsion mechanisms. If the hinges are skewed or the torsion bars have lost their elasticity, the doors may not close tightly or, worse, open spontaneously while moving, creating an emergency situation. Adjusting this unit requires a special tool and precise adherence to tightening torques, since the slightest distortion disrupts the geometry of the opening.
Technical features of the engine and transmission
The heart of a car is the engine PRV V6, developed jointly by Peugeot, Renault and Volvo, which produced about 130 horsepower in stock condition. For a car with such mass and aerodynamics, this was frankly not enough, which made acceleration to “88 mph” necessary for activation streaming storage, almost impossible without serious forcing. The engine is located at the rear, which improves weight distribution, but significantly complicates access to attachments during maintenance.
The transmission is either a 5-speed manual or a 3-speed automatic, and both options have their own operating characteristics. Manual transmissions are notorious for rough shifting and the need to periodically adjust the clutch cable, which stretches over time. The automatic transmission, in turn, is prone to overheating during aggressive driving, which requires the installation of an additional oil cooler.
- 🔧 Regularly replacing the timing belt every 30-40 thousand kilometers is a critical procedure to prevent valve breakage and damage.
- ⚙️ The ignition system requires precise adjustment of the advance angle, as Hall sensors lose their sensitivity over time.
- 🌡️ The cooling system thermostat often stays closed, so it is changed preventively with every major service.
⚠️ Attention: When working with the PRV V6 engine, it is strictly forbidden to ignore the specific tightening torques of the cylinder head, since the aluminum alloy is easily deformed, which will lead to gas breakthrough and overheating.
The secret of power
How to increase power in a DeLorean?: To achieve movie-like performance, owners often install a turbocharger or change the intake system. Installing an intercooler and reflashing the control unit allows you to increase power to 200+ hp, but requires strengthening the transmission.
Stainless steel body: myths and reality
The use of stainless steel for body panels was a revolutionary decision by John DeLorean to eliminate corrosion and reduce the cost of ownership. However, in practice, the material turned out to be susceptible to scratches, which are clearly visible on a polished surface, as well as “blooming” of the metal if not properly cared for. Many owners prefer to matte the panels or cover them with a protective film to hide minor defects in use.
The aluminum frame to which the steel panels are attached requires constant monitoring for cracks, especially in the suspension and engine mounting areas. Vibrations and torsional loads over time lead to fatigue failure of the metal, which can cause a violation of the geometry of the body. Restoring the frame is a complex process that requires argon welding and the presence of specialized stocks.
The joints between the panels are sealed using a special sealant, which over time loses its elasticity and cracks. Moisture that gets inside causes corrosion of aluminum elements and rotting of the floor, so checking the condition of the seams should be part of the annual maintenance plan. The use of low-quality sealants is unacceptable, as they may react with the metal.
Electrics and unique control systems
Electrical diagram The DeLorean DMC-12 is based on late 70s standards, which means there are a lot of relays, fuses and connections that are prone to oxidation. Ground problems are the scourge of these cars, causing chaotic behavior of instruments, failure of lighting equipment and malfunctions of the engine management system. Diagnostics requires sequential “diagnosis” of the circuits and stripping of all available contacts.
The digital instrument panel, which has become a symbol of the futuristic interior, often fails due to degradation of display segments or failure of the control electronics. Restoring the original panel is possible, but often owners resort to installing modern analogues while maintaining the style of the original. This allows you to get up-to-date information about the status of the car's systems without losing its retro charm.
- ⚡ Checking the generator and voltage regulator is mandatory, as voltage surges can damage sensitive electronics.
- 🔋 The battery must be securely fastened and protected from moisture, as electrolyte vapors accelerate corrosion of the terminals.
- 💡 Replacing lamps in headlights and brake lights often requires removing additional trim elements due to the dense layout.
| Parameter | Meaning | Note |
|---|---|---|
| Engine size | 2.85 liters | V6, 90 degrees |
| Power (drain) | 130 hp | At 5500 rpm |
| Torque | 212 Nm | At 2750 rpm |
| Acceleration 0-100 km/h | 8.8 sec | Depends on condition |
| Maximum speed | 177 km/h | Limited by aerodynamics |
Suspension and handling of the legendary coupe
The DeLorean's suspension design includes double wishbones front and rear, which provides good directional stability, but requires careful attention to the silent blocks and ball joints. Rubber-metal elements dry out and crack over time, leading to knocks and backlashes that negatively affect handling. Replacing these components often requires the use of a special puller.
The braking system is equipped with disc mechanisms on all wheels, but the braking efficiency on heavy wheels of the original design leaves much to be desired. Owners often upgrade the system with higher-performance calipers and ventilated discs, which significantly improves safety. Standard brakes are prone to overheating under frequent heavy braking.
☑️ Chassis diagnostics
The power steering has a low ratio, making the car less agile at low speeds but stable on the highway. Play in the steering rack is a common problem that requires adjustment or replacement of the repair kit. The lack of steering feedback is often compensated for by installing a thinner steering wheel to improve vehicle feel.
⚠️ Attention: When replacing suspension elements, be sure to use a torque wrench, as exceeding the tightening force can lead to destruction of the aluminum arms.
Salon and ergonomics of space
Interior DeLorean DMC-12 made in a simple style using black leather and plastic, which creates the feeling of a spaceship cockpit. Getting into the car is low, which, combined with high thresholds, requires some skill, especially with the wing doors open. Headroom is limited, so tall drivers may find it uncomfortable on long trips.
The interior ventilation and heating system works mediocrely, which is due to the layout features and insufficient performance of the standard heater. In winter, the glass may fog up, and warming up the interior takes considerable time. Many owners modify the system by installing more powerful fans and improving the thermal insulation of the body.
- 🎛️ The central console contains a minimum of controls, which simplifies the interface but limits functionality.
- 🪑 Seats with developed lateral support fix the driver well, but the padding sags over time and requires restoration.
- 🔊 The standard audio system is outdated, and most owners replace the head unit with modern multimedia systems.
Leather preservation: To care for DeLorean leather interior, use only specialized conditioners for natural leather, avoiding products containing silicone, which clogs the pores of the material.
Cost of ownership and availability of spare parts
Buying a DeLorean today is an investment in history, but maintaining the car requires a significant financial investment. The cost of original spare parts is high due to limited circulation and logistics costs, and many components have to be ordered from the USA or Europe. The market for refurbished components is quite well developed, but their prices are comparable to new parts for modern business-class cars.
There are few qualified specialists who know the nuances of the design of this car, and their services are expensive. Self-repair is possible, but requires special tools and in-depth study of manuals, since many decisions of engineers of that time seem illogical from a modern point of view. Owning such a car is a hobby that requires time, money and patience.
Main conclusion: The DeLorean DMC-12 is not just a vehicle, but a collectible artifact that requires a professional approach to maintenance and a willingness to put up with its technical features.
Is it true that the DeLorean can fly?
In reality, the DeLorean DMC-12 cannot fly. The ability to float in the air appeared only in the film “Back to the Future” after the installation of a “hover converter”. In stock form, this is exclusively ground transport.
How many DeLorean DMC-12s were produced?
During production from 1981 to 1983, approximately 9,000 copies were produced. It is difficult to estimate the exact number of cars that have survived to this day, but a significant part of them were lost or destroyed as a result of accidents.
Why do doors open upward?
Gullwing doors were chosen due to the presence of reinforced sills in the body structure, which made the use of traditional doors impossible. In addition, this decision was supposed to emphasize the futuristic nature of the design.
Can the DeLorean be used as a daily driver?
Using a DeLorean as a daily driver is extremely difficult due to reliability, parts and comfort issues. This is a car for weekends, exhibitions and club meetings of enthusiasts.