Coasting in Neutral is damaging???
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Joined: Jan 2003
Posts: 1,994
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COASTING IN NEUTRAL
Manual gearboxes use the spinning gears & bearings to circulate the oil around. If you put it in neutral AND TURN OFF THE ENGINE; your input shaft doesn't turn. But, y'know, if you turn off the engine while you're coasting, you're sorta stupid anyway. (Darwin award, anyone?) This probably came from some kind of warning about not towing the car with the drive wheels on the ground. Do this (turn off engine) in an automatic & you'll do damage way more quickly.
FUEL WHEN COASTING
Most modern engines will shut off ALL FUEL if the engine is spinning above, say, 1500rpm with the throttle all the way closed. If you've got a carburator then that's different, but most of the signatures in this thread have newer cars... The ECU knows the throttle position & the rpm. My former '86 Jetta did that, so I bet Honda figured out how to do that by now.
Manual gearboxes use the spinning gears & bearings to circulate the oil around. If you put it in neutral AND TURN OFF THE ENGINE; your input shaft doesn't turn. But, y'know, if you turn off the engine while you're coasting, you're sorta stupid anyway. (Darwin award, anyone?) This probably came from some kind of warning about not towing the car with the drive wheels on the ground. Do this (turn off engine) in an automatic & you'll do damage way more quickly.
FUEL WHEN COASTING
Most modern engines will shut off ALL FUEL if the engine is spinning above, say, 1500rpm with the throttle all the way closed. If you've got a carburator then that's different, but most of the signatures in this thread have newer cars... The ECU knows the throttle position & the rpm. My former '86 Jetta did that, so I bet Honda figured out how to do that by now.
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Joined: Nov 2002
Posts: 44
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Originally posted by JimBlake
FUEL WHEN COASTING
Most modern engines will shut off ALL FUEL if the engine is spinning above, say, 1500rpm with the throttle all the way closed. If you've got a carburator then that's different, but most of the signatures in this thread have newer cars... The ECU knows the throttle position & the rpm. My former '86 Jetta did that, so I bet Honda figured out how to do that by now.
FUEL WHEN COASTING
Most modern engines will shut off ALL FUEL if the engine is spinning above, say, 1500rpm with the throttle all the way closed. If you've got a carburator then that's different, but most of the signatures in this thread have newer cars... The ECU knows the throttle position & the rpm. My former '86 Jetta did that, so I bet Honda figured out how to do that by now.