Explore Nissan Altima Purge Valve Solenoid & Nissan Altima Vapor Canister Purge Solenoids Locate Nissan Altima Vapor Canister Purge Solenoid. Maintaining your Nissan Altima's vapor canister purge solenoid is pivotal for smooth operation and fuel efficiency. To ensure longevity, regularly check for cracked hoses and replace them to prevent vacuum leaks. Signs that you might need a replacement include difficulty starting the engine or an illuminated check engine light. When selecting a new solenoid, opt for OEM-quality parts that guarantee compatibility and optimal performance. Installation is straightforward, but always ensure the unit is firmly connected and seated to avoid any future issues. Proper maintenance and choosing the right solenoid will keep your Altima running cleanly and efficiently, making it a smart investment for savvy online shoppers.