Going down moderate hills - what's better for an engine?

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quote:

Originally posted by Eddie:
Only a nut case would coast with the engine off. If you do you loose your power brakes and power steering.

If you aren't a girly man you can still control your vehicle, but you might have to put your cell phone, coffee and donut down.
 
quote:

Originally posted by brianl703:
On every car I've ever looked at the wiring diagram for, turning the ignition off cuts power to the fuel injectors.

I would hope so.
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quote:

Originally posted by XS650:

quote:

Originally posted by Eddie:
Only a nut case would coast with the engine off. If you do you loose your power brakes and power steering.

If you aren't a girly man you can still control your vehicle, but you might have to put your cell phone, coffee and donut down.


I am a big guy and into powerlifting, even then I would admit that with ignition off, I can handle the steering but the brakes on a big SUV are truly hard to apply without power assist.
 
quote:

If you aren't a girly man you can still control your vehicle, but you might have to put your cell phone, coffee and donut down.

My '89 Scirocco had 215/55/16 tires -- and no power steering. That car gave me a good upper body workout. These days, the gas pedal on my Audi keeps braking off. Dang thing is plastic...
 
My Corvette with got a tad stiff in the steering with its 285/40-17 front tires when I coasted in neutral with the engine off a couple of times.
 
coasting with the engine off is not a good idea, and not a consideration...

However, if a severe accident occurred, I doubt anyone would be able to prove that the engine wa on or off anyway.

JMH
 
A witness may know this though.

It isnt worth the risk.

While anyone else may not know it or not,it would be terrible to wreck and kill someone because a person was coasting with their engine turned off.
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The AC compressor in my mom's old car had the clutch fall apart (strangest failure I'd ever seen--the compressor didn't lock up, the clutch just fell apart), so there was no putting a new belt on without fixing the AC compressor. It was also 40 miles away from my trusted mechanic.

Since the water pump on that engine is driven by the timing belt, I just grabbed the battery out of my other car, put it in a bucket so it didn't mess up the carpet, and wired it up to a cigarette lighter cord and a multimeter. I started the engine and plugged the cigarette lighter cord in, so as to back-feed power from the 2nd battery through the cigarette lighter socket (so it was running on two batteries in parallel).

I drove it the 40 miles with no power steering and no alternator, watching the battery slowly discharge on the multimeter. When I got there, as I recall it had enough charge to go for probably another hour.
 
People,for one to coast downhill with their engine off is so dangerous.

It is not only dangerous to them but to others that must share the road with them.

With the engine off,you lose the control of your vehicle.

Yes,you may still be able to steer and apply the brakes but the time involved in doing such has drastically increased.

If you do a little research,I think you will find that many accidents could have been avoided by just seconds.

That may come into play when coasting with the engine off.

The few seconds that are saved now days by most cars having POWER steering and POWER brakes that only operate while the enging is running,could save a life.

I know that some cars dont have PB and PS but those that dont are usually very small and take very little effort top drive.

Imagine trying to explain to a police officer that the wreck occured because you couldt brake good enough because you had turned your enging off.

Hello bankruptcy.

I would not blame someone for suing for everything they could get in a situation like this.
 
I has been confirmed by me personally on my TDI as well as other that own them. Coasting in gear does not inject fuel. The ECM waits till about 1200 to start the injection back up. I confirmed it by turning on the car while coasting down a long hill(5 speed MT). There is no difference what so ever. I just can't read any of the gauges because they are all electronic.
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