Timeline for Is it bad to drive slow at low rpms in 4th or 5th gear? Do you get better gas mileage?
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| Feb 3, 2017 at 14:58 | comment | added | juhist | Actually, the engine management system increases the air supply and increasing the fuel supply is a corollary of increasing the air supply. However, this only applies to electronic throttle control systems. If the throttle is actuated by a cable, the separate idle air control valve that is controlled electronically is not big enough for anything else than idling. So, please keep in mind that the last paragraph applies only to modern engines! | |
| Sep 16, 2015 at 20:39 | history | answered | alephzero | CC BY-SA 3.0 |