Most 1989 Dodge Ram 50 pickups were powered by a 2.6-liter Mitsubishi inline-four (the 4G54). In some markets and trims, a smaller 2.0-liter inline-four (the 4G63) was also available.
Engine options by market
Engine availability varied by region and trim level, with the United States largely relying on the 2.6-liter base engine and other markets occasionally offering the smaller option. Both engines are part of Mitsubishi’s 4G63/4G54 family, sharing architecture and parts compatibility where applicable.
- 2.6-liter inline-four (Mitsubishi 4G54): Displacement about 2,557 cc; typical output near 100 horsepower with torque around 110–125 lb-ft. Commonly paired with a 5-speed manual or a 4-speed automatic transmission.
- 2.0-liter inline-four (Mitsubishi 4G63): Displacement about 1,998 cc; typical output roughly 90–110 horsepower, with torque around 110–115 lb-ft. Available in certain overseas markets or trims, with similar transmission options to the 2.6L.
In summary, the Ram 50’s engine lineup for 1989 centered on the 2.6L as the standard choice in many markets, with the 2.0L offered where regulations or market demand allowed.
Technical details and maintenance notes
Both the 2.6L 4G54 and the 2.0L 4G63 are robust for their era, but they require standard care typical of late-1980s Mitsubishis. Here are key considerations for owners or prospective buyers.
- Fuel system and induction: Some early 2.6L and 2.0L engines used carburetors, while later variants incorporated electronic fuel injection. Check for proper fueling and idle behavior.
- Cooling system: Maintain the radiator, hoses, water pump, and thermostat to prevent overheating, which can be a common issue on aging trucks.
- Timing and drive components: The 4G63/4G54 family uses belt- or chain-driven timing depending on variant and year; follow the manufacturer’s service schedule for timing components and related collateral (water pump, tensioners, spark plugs).
- Oil and lubrication: Use the recommended viscosity and change intervals outlined in the manual; these engines respond well to regular preventive maintenance.
Overall, the 1989 Ram 50’s powerplants are durable and parts are generally accessible, but buyers should verify the exact engine and its maintenance history for the specific vehicle’s market and trim.
Other regional variants
Outside the United States, Mitsubishi engines in the Ram 50/Mighty Max lineage varied, with the 2.0L (4G63) being more common in certain regions and emission-control contexts. Availability depended on local regulations, model year, and dealer specifications.
Summary
The 1989 Dodge Ram 50 was primarily equipped with a 2.6-liter Mitsubishi 4G54 inline-four in many markets, delivering roughly 100 hp and adequate pulling power for a compact pickup of the era. A smaller 2.0-liter 4G63 engine was also offered in some markets or trims. Both engines are part of Mitsubishi’s 4G63/4G54 family, sharing design lineage and service considerations. For prospective buyers or restorers, confirm the exact engine and its transmission pairing for the specific truck, and plan maintenance around the era’s cooling, fueling, and timing components.
What's the difference between a Ram 50 and D50?
Dodge Ram 50 (D50) First Generation (1981-1986)
The first generation was launched in 1979, and it was known as the Dodge D50 until 1980. From 1981 the D50 designation was dropped, after which the pickup continued to be marketed under the name Dodge Ram 50 until the end.
What are common problems with the Ram 50?
The 1992 Dodge Ram 50 is known to have some issues with rough idling and stalling, especially when sitting in the driveway. These problems can be a bit frustrating, but they are relatively common for a vehicle of this age.
What engine is in a 1989 Dodge Ram 50?
This Ram 50 4x2 standard bed is powered by an able 2.0-liter engine and comes packed with value features. Carpeting, full headliner, tinted glass, adjustable steering column, dome light, dual swing-away outside rearview mirrors and power-assisted front disc/rear drum brakes are standard on all Ram 50's.
How much is a 1989 Dodge Ram 50 worth?
1989 Dodge Ram 50 Pickup base price starts at $8,600 to $13,369.