Dodge Caravan 1991-1995 Fuel System Specifications

The 1991-1995 Dodge Caravan is compatible with regular unleaded gasoline with an octane rating of 87 or higher. Using higher octane fuel is not required but may improve performance in certain conditions. Avoid using diesel or ethanol blends above 10% (E10) as they can damage the engine and fuel system components.

Regular maintenance for the fuel system includes inspecting and replacing the fuel filter every 30,000 miles, checking fuel lines for leaks or cracks, and ensuring the fuel injectors are clean. Additionally, use fuel system cleaners periodically to prevent buildup. Always follow the manufacturer’s recommended maintenance schedule for optimal performance.

To replace the fuel filter, first, relieve fuel system pressure by removing the fuel pump fuse and running the engine until it stalls. Locate the fuel filter, usually along the fuel line under the vehicle. Disconnect the fuel lines using a flare nut wrench, remove the old filter, and install the new one. Reconnect the fuel lines and secure the filter. Finally, reinstall the fuel pump fuse and start the engine to check for leaks.

Poor fuel efficiency can result from clogged fuel injectors, a dirty air filter, or a malfunctioning oxygen sensor. Start by checking and replacing the air filter if necessary. Use a fuel injector cleaner or have the injectors professionally cleaned. If the issue persists, inspect the oxygen sensor and replace it if faulty. Regular maintenance and proper tire pressure also contribute to better fuel efficiency.

To optimize fuel performance, ensure regular maintenance, including timely oil changes, air filter replacements, and fuel system cleanings. Use high-quality fuel and avoid aggressive driving habits. Check tire pressure regularly and ensure the vehicle is not carrying unnecessary weight. Additionally, inspect and replace worn spark plugs and oxygen sensors to maintain efficient combustion.