¿Por Qué Tu Motor Sube y Baja Solo en Ralentí? (13 Trucos que Nadie Te Lo Dice)

Is your car idling erratically? If you notice the RPMs fluctuating on their own when you're in neutral or stopped, this video shows you the 13 most common causes and how to fix them step by step. From vacuum leaks to faulty sensors, and even electrical problems that an OBD2 scanner can't detect. Discover the little-known trick: how a loose or corroded ground connection can make your engine behave erratically WITHOUT GENERATING FAULT CODES. Learn how to diagnose with a multimeter, clean valves and sensors, and restore a stable idle. 👉 Don't forget to SUBSCRIBE to TipsAutos for more clear and practical technical diagnostics. Turn on notifications 🔔 so you don't miss any tips. 📌 In this video you will see: 0:00 Introduction 2:19 Vacuum leaks – how to detect them 3:31 Faulty MAF sensor 4:15 Blocked IAC valve 5:04 Dirty air filter 5:33 Clogged fuel filter 6:06 Dirty throttle body 6:51 Faulty TPS sensor 7:25 Dirty fuel injectors 8:04 Weak fuel pump 8:38 Stuck EGR valve 9:17 Faulty variable valve timing (VVT) 9:45 Alternator or battery problems 10:20 Damaged ignition system 10:50 The TRICK no one tells you: engine grounds 11:39 WHAT TO DO NEXT 12:01 Conclusion and call to action 🔧 Recommended replacement parts: Use reliable brands such as Bosch, Denso, NGK, Shell V-Power, among others. #CarTips #AutomotiveMechanics #UnstableIdle #CarDiagnostics #ProblemsAndSolutions