2000 Dodge Ram Van 1500 - engine & powertrain

 

The 2000 Dodge Ram Van 1500 with the 3.9L Magnum V6 gasoline engine features a 3.9-liter (239 cu in) displacement, 12 valves, and a VIN code "X" as the 8th digit. [1, 2]

Engine Specifications & Performance

• Horsepower: 175 hp @ 4800 rpm
• Torque: 225 lb-ft @ 3200 rpm
• Fuel Economy: Approximately 15 mpg city / 17 mpg highway
• Oil Capacity: 4 quarts (including filter change) [1, 2]

Replacement & Options

• Remanufactured Engines: Available through suppliers like Powertrain Products starting around $1,995 to $2,399 depending on the build and warranty.
• Used Engines: Mileage-tested used units (90K–120K miles) generally cost around $1,350. [1, 2, 3]

If you're working on this engine, let me know:

• Are you looking for torque specs, fluid capacities, or troubleshooting a specific issue (like a no-start or coolant leak)?
• Do you need help finding replacement parts?

How to change oil 2000 Dodge Ram 1500 3.9L Magnum V6

what transmission reverse, neutral, 1, 2, Drive, Overdrive ?

The 4-speed automatic transmission paired with the 3.9L V6 engine in your 2000 Dodge Ram Van 1500 is the 42RE automatic transmission. It belongs to Chrysler's A500 transmission family. [1, 2]

The standard gear layout for each position on your shifter works as follows:

Gear Ratios by Shifter Position

The transmission shifts across individual mechanical gears depending on the gear position selected:

• Reverse (R): Activates a 2.21:1 gear ratio to back the vehicle up.
• Neutral (N) / Park (P): Disengages all gear sets from the engine's output shaft.
• 1 (First Gear): Manually locks the transmission into 1st gear (2.45:1). It is used for maximum pulling power, steep hill descents, or heavy loads at very low speeds. [1]
• 2 (Second Gear): Locks the transmission to shift only between 1st and 2nd gear (1.45:1). This prevents it from shifting any higher than 2nd, which is ideal for driving on slick winter roads or maintaining power up steady inclines. [1]
• Drive (D): Automatically steps through 1st, 2nd, and 3rd gear (1.00:1). If the Overdrive button is turned off, the transmission treats 3rd gear (a direct 1:1 drive) as its highest gear. [1]
• Overdrive (OD): The final 4th gear (0.69:1). When driving normally in "Drive" with Overdrive enabled, the transmission shifts up to 4th once you reach highway cruising speeds. This drops your engine RPMs to maximize fuel efficiency. [1, 2]

Managing Overdrive

Your van features an "O/D Off" button on the dashboard or column shifter.

• When to turn it off: If you are towing a heavy load, driving through hilly terrain, or notice the transmission frequently shifting back and forth between 3rd and 4th gear, push the button to disable Overdrive. This protects the transmission from overheating.

Are you experiencing an issue with your transmission shifting, such as slipping, refusing to shift into Overdrive, or a delayed engagement when shifting into Reverse?

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with push button on shifter for Towing ? tell me about this transmission paired with this engine and vehicle ...

The push button on the end of your shifter stalk controls the Overdrive (O/D) Lockout function. Because the 2000 Dodge Ram Van has a column shifter, this button acts as a toggle to switch your 4th gear on or off. [1, 2, 3]

When you push it, an "O/D OFF" light illuminates on your instrument cluster. This tells the transmission to strictly use gears 1 through 3, locking out the highly-geared 4th gear (Overdrive). [1]

How the Towing Button Works

When you are towing or hauling heavy cargo with the 3.9L V6, the engine operates on the lower end of its power band. If you leave Overdrive enabled while towing, two things happen:

1. Gear Hunting: The transmission will constantly shift back and forth between 3rd and 4th gear as it struggles to maintain highway speeds up slight inclines or against the wind.
2. Heat Buildup: This constant shifting, combined with the slipping of the torque converter clutch, generates massive amounts of heat. Heat is the primary killer of the 42RE transmission. [1, 2]

Rule of Thumb: Always press that button to turn O/D OFF whenever you are towing, hauling a van full of passengers/cargo, or driving through hilly terrain. It forces the transmission to stay in 3rd gear (a direct 1:1 mechanical ratio), which keeps the engine in its optimal power band and prevents the fluid from overheating. [1]

The 3.9L V6 & 42RE Pairing Profile

The combination of Chrysler's 3.9L Magnum V6 and the 42RE automatic transmission creates a distinct driving dynamic inside a full-sized, heavy-bodied Ram Van 1500. [1]

• Underpowered for Heavy Towing: The 3.9L V6 produces 175 horsepower and 225 lb-ft of torque. While highly reliable and simple to work on, it works incredibly hard just to move the unladen weight of a full-size van. When tasked with heavy towing, this engine runs out of breath quickly, making patience a requirement on highway merges and steep grades.
• The Transmission's Lineage: The 42RE is a light-to-medium duty transmission derived from the legendary Chrysler TorqueFlite A727, adapted with an electronic governor and an bolt-on Overdrive section. It was built specifically for Chrysler’s smaller engines (like the 3.9L V6 and 4.0L Straight-6). It lacks the heavier internal components found in the 46RE transmission that was paired with the 5.2L and 5.9L V8 vans. [1, 2, 3, 4]
• Towing Capacities: In a Ram Van 1500 configuration, this V6/42RE powertrain typically caps maximum towing limits between 2,000 to 4,000 lbs depending on your van's rear axle ratio (with lower gear ratios like 3.92 handling weight better than highway-friendly 3.55 gears). It is perfectly suited for small utility trailers, jet skis, or light pop-up campers, but shouldn't be used for large travel trailers.

Common Pain Points & Longevity Secrets

If you intend to tow or simply want this transmission to survive past 200,000 miles, keep an eye out for these known characteristics:

• Governor Pressure Solenoid & Sensor: This is the most common failure point on the 42RE. When these electronic sensors fail, the van will feel like it is stuck in 1st or 3rd gear, or it will refuse to downshift when you come to a stop. Fortunately, they are easily replaceable by dropping the transmission fluid pan.
• Add an Aftermarket Cooler: If you do any light towing, installing an auxiliary transmission fluid cooler is the cheapest insurance policy you can buy. Keeping fluid temperatures below 200°F vastly extends the lifespan of the internal clutches.
• Fluid Sensitivity: The 42RE is highly sensitive to fluid type. Only use licensed ATF+4 fluid. Using standard Dexron/Mercon fluid will cause the torque converter clutch to chatter and eventually destroy the friction material. [1, 2, 3]