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Albert
Albert asked in Cars & TransportationMaintenance & Repairs · 5 years ago

Car's RPM When Cruising on Highway?

Hello i dont know much about cars but i noticed when im driving 70 on the highway and i let go of the gas and let it cruise the RPM stays up even though im not pressing on the gas anymore.

i dont know why. someone told me to throw it in neutral while cruising though i dont think thats something u should do. anyone know why the car rpm stays up a bit at high speed? thanks

4 Answers

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  • Anonymous
    5 years ago
    Favorite Answer

    Yes, that's how gear boxes work.

    Modern automatics basically"lock up" the torque converter in higher gears, so the engine revs are always linked directly to the wheel speed. At lower revs the drive goes through the torque converter, which has some "slip". So around town you may notice the revs going up and down as you adjust the throttle. But at open road speeds it generally doesn't.

  • DeMoNsLaYeR575
    Lv 7
    5 years ago

    its normal if you have cruise control on

    its also normal for manual transmission without cruise control

  • ?
    Lv 7
    5 years ago

    Completely and totally normal, bud.

  • Albert
    5 years ago

    thanks lanab ur answer explains everything lol

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