Car off coasting theory questions
Did a bit of this yesterday and I must say it was quite exhilirating, I must say. However, I only did it on my way to a complete stop because I've got a few questions.
How does this junk work with an auto? And, do the people who do this usually do it to a long light or just down a hill or what. I'm planning on turning the car off at some of these lights I hit now, and was thinking this stuff would be good to combine. |
Dont do it with an 'auto' ..
Dont do it with an 'auto' .. pump not running will cause catastrophic failure.
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careful about making blanket
please be careful about making blanket statements.
some saturn automatics are perfectly OK coasting with engine off - it's why they're such popular tow-behinds for RVs. it may be bad for many/most automatics, but not necessarily for all. you need to know your particular vehicle's specifics. nevertheless - if your 'auto' is a non-coaster SVOboy, just coast to the stop with the engine idling. the torque converter is still spinning, so lubrication isn't an issue, and it's still more efficient than coasting down in gear, because there's no engine braking, and injectors are pulsing at a lower rpm. plus you retain power steering, and have more than "reserve" vacuum for braking (compared to engine off). as for "does this junk work with an auto", yes, absolutely. have a look in the pulse & glide thread (long). one of my last comments is about a driver who is getting phenomenal mileage coasting in neutral with his accord automatic non-hybrid. thread link |
my auto coasts very good in
my auto coasts very good in neutral, the hassle is the brakes don't work and the power steering. Not to mention if I want to start the car back up it has to be a complete stop or in Neutral.
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10 minutes ago, i drove through a typical subdivision where there's a stop sign on each corner. i accelerated about 30% of the way down the block, then shifted to neutral to coast the rest of the way to the next intersection. that's pulse and glide. some people call it porpoising. the technique isn't exclusively for higher speeds. it can be applied in lots of situations. |
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