Timeline for Will engine braking damage my transmission? How can I tell?
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Dec 21, 2018 at 5:28 | comment | added | Sam K | You're not seeing the big picture here. Engine breaking might be 0 units + 5 units of fuel getting back up to 65mph. With neutral and not needing to get back to 65mph might be 4 units of fuel. | |
| Dec 17, 2018 at 16:02 | comment | added | Pᴀᴜʟsᴛᴇʀ2♦ | And the engine continues to have to run, which means you're using gas during the entire time. By using engine braking, as long as the parameters are met, you're using no gas. To my knowledge, using a little gas (while engine is idling as you coast down the hill) is still using more gas than using no gas as the ECU tells the injectors not to fire. | |
| Dec 17, 2018 at 15:46 | comment | added | Sam K | But if you're losing speed going down the hill you have to gas as soon as you get to the bottom. In neutral you gain speed and don't need to gas for about 1 minute after the bottom. | |
| Dec 16, 2018 at 14:00 | comment | added | Pᴀᴜʟsᴛᴇʀ2♦ | Welcome to Motor Vehicle Maintenance & Repair! Two things ... first, the gist of this question is about the wear and tear on the transmissions, not about fuel efficiency. What the OP is actually asking about where he talks about fuel efficiency is answered by @BobCross. Secondly, realize, it takes more gas to coast in neutral than coasting in drive at a higher RPM. The ECM, under the right conditions, will cut fuel to the engine, while the momentum of the vehicle will keep the engine spinning around. This happens between ~1200-2500 RPM, but also depends on the vehicle. | |
| Dec 16, 2018 at 6:55 | review | Late answers | |||
| Dec 16, 2018 at 14:00 | |||||
| Dec 16, 2018 at 6:40 | review | First posts | |||
| Dec 16, 2018 at 14:51 | |||||
| Dec 16, 2018 at 6:39 | history | answered | Sam K | CC BY-SA 4.0 |