The Acura RDX from 2013 to 2015 is a luxury crossover SUV that combines comfort, reliability, and strong performance. But even with Acura’s reputation for quality, engines can fail over time due to high mileage, overheating, or mechanical issues. Replacing the engine can restore the RDX to its original strength and extend its service life. This guide outlines the process step by step. At Power Engines, we supply OEM-spec, road-legal replacement engines built to fit the Acura RDX seamlessly, making installation smoother and more reliable.
Preparation and Tools Required
Gather the right tools before beginning: an engine hoist, hydraulic jack, jack stands, torque wrench, socket and wrench sets (metric), screwdrivers, pliers, and drain pans. You’ll also need replacement fluids such as engine oil, coolant, and transmission fluid. Park your RDX on a level surface, disconnect the battery, and make sure the engine is completely cool before you begin.
Step 1: Remove the Hood and Drain Fluids
Unbolt and remove the hood for clear access to the engine bay. Drain all fluids—oil, coolant, and transmission fluid—into safe containers for proper disposal. This step prevents spills and contamination during the replacement.
Step 2: Disconnect Wiring, Sensors, and Fuel Lines
Label and disconnect all wiring harnesses, sensors, and vacuum hoses. Relieve the pressure in the fuel system, then carefully disconnect the fuel lines. Taking photos as you go can help you reassemble correctly later.
Step 3: Remove Accessories and Cooling System
Detach the alternator, starter motor, A/C compressor, and power steering pump. In many cases, the A/C and power steering units can be set aside in the engine bay without disconnecting their fluid lines. Remove the radiator, fans, and associated hoses to give yourself more space.
Step 4: Disconnect Exhaust and Transmission
Unbolt the exhaust manifold from the downpipe or catalytic converter. Support the transmission with a jack or stand, then remove the bolts connecting the engine to the transmission housing. For automatic models, disconnect the torque converter bolts; for manual setups, remove the clutch assembly.
Step 5: Remove Motor Mounts and Extract the Engine
Unbolt the motor mounts on each side of the engine. Attach the hoist to the engine’s lifting points and carefully lift it out of the bay. Always confirm that all hoses, wires, and mounts are clear before fully removing the engine.
Step 6: Prepare the Replacement Engine
Transfer reusable components from the old engine to the new one, such as the intake and exhaust manifolds, brackets, and sensors. Replace seals, gaskets, and belts for added long-term reliability. At Power Engines, our Acura-compatible engines are built to OEM specifications and are road-legal, ensuring compliance with emissions standards and easy installation.
Step 7: Install the New Engine
Lower the replacement engine into the bay using the hoist, aligning it with the transmission and motor mounts. Tighten all bolts to Acura’s torque specifications. Reconnect the exhaust, transmission, and accessory components.
Step 8: Reconnect Wiring, Fuel, and Cooling Systems
Reinstall wiring harnesses, sensors, fuel lines, and vacuum hoses using the labels and photos you prepared earlier. Refit the radiator, cooling fans, and hoses. Fill with fresh oil, coolant, and transmission fluid.
Step 9: Test and Break-In
Reconnect the battery and turn the ignition to ON to prime the fuel system. Start the engine and let it idle, monitoring for leaks, noises, or dashboard warnings. Allow the engine to reach operating temperature before test driving. For the first 500 miles, avoid heavy loads or high RPMs. Perform an oil change after the break-in period for maximum longevity.
Replacing the engine in a 2013–2015 Acura RDX is a detailed process that requires preparation and patience, but it can restore your SUV’s dependability and performance. By following these steps and sourcing a high-quality, road-legal replacement from Power Engines, you’ll ensure a smooth installation and lasting results. With the right engine and careful installation, your Acura RDX can continue delivering luxury and reliability for years to come.
