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Author Topic: Improving fuel economy  (Read 7167 times)

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Kate

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Improving fuel economy
« on: 21 March 2015, 20:37:51 »
Hi all.

Just wondering whether it would be a problem to my auto box if I coast down hills in neutral? I live in south-east Cornwall and it's very hilly.

Does anyone have any other ideas to improve mpg?  :y

Don't say 'buy another car'.  ;D
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TheBoy

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Re: Improving fuel economy
« Reply #1 on: 21 March 2015, 20:41:45 »
Leaving it in gear will *improve* the economy of injection cars.
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Kate

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Re: Improving fuel economy
« Reply #2 on: 21 March 2015, 20:47:39 »
Quote from: TheBoy on 21 March 2015, 20:41:45
Leaving it in gear will *improve* the economy of injection cars.

So putting it into neutral reduces it then, TB?
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05omegav6

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Re: Improving fuel economy
« Reply #3 on: 21 March 2015, 20:49:13 »
Quote from: Kate on 21 March 2015, 20:47:39
Quote from: TheBoy on 21 March 2015, 20:41:45
Leaving it in gear will *improve* the economy of injection cars.

So putting it into neutral reduces it then, TB?
Rolling down hill in gear switches the injectors off...

Rolling down hill in neutral requires fuel to keep the engine at idle :y
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Andy B

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Re: Improving fuel economy
« Reply #4 on: 21 March 2015, 20:50:28 »
Quote from: Kate on 21 March 2015, 20:47:39
Quote from: TheBoy on 21 March 2015, 20:41:45
Leaving it in gear will *improve* the economy of injection cars.

So putting it into neutral reduces it then, TB?

Your engine's ECU will shut off the fuel to the injectors on over run ...... it doesn't when it's idling in neutral  ;)
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05omegav6

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Re: Improving fuel economy
« Reply #5 on: 21 March 2015, 20:52:01 »
Did you nod off Andy? ::)
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Andy B

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Re: Improving fuel economy
« Reply #6 on: 21 March 2015, 20:54:42 »
Quote from: Taxi Al on 21 March 2015, 20:52:01
Did you nod off Andy? ::)

ZZZZZZZZzzzzzzzzzzz  ;)
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Kate

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Re: Improving fuel economy
« Reply #7 on: 21 March 2015, 21:02:08 »
Has anyone ever tried rolling in neutral to see what affect it has?
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TheBoy

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Re: Improving fuel economy
« Reply #8 on: 21 March 2015, 21:07:51 »
Quote from: Kate on 21 March 2015, 21:02:08
Has anyone ever tried rolling in neutral to see what affect it has?
It will increase your fuel usage by about 0.4 gallons per hour ;)
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Kate

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Re: Improving fuel economy
« Reply #9 on: 21 March 2015, 21:13:29 »
What's that programme called where they test theories?

That would be interesting to watch.
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The Sheriff

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Re: Improving fuel economy
« Reply #10 on: 21 March 2015, 21:24:57 »
Quote from: Kate on 21 March 2015, 21:13:29
What's that programme called where they test theories?

That would be interesting to watch.
You've been told the answer to your question about four times, you stupid woman. Move on. ;D
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Kate

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Re: Improving fuel economy
« Reply #11 on: 21 March 2015, 21:26:41 »
Quote from: STMO on 21 March 2015, 21:24:57
Quote from: Kate on 21 March 2015, 21:13:29
What's that programme called where they test theories?

That would be interesting to watch.
You've been told the answer to your question about four times, you stupid woman. Move on. ;D

No-one has tested it though so it's just a theory, you stupid man. ;D
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The Sheriff

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Re: Improving fuel economy
« Reply #12 on: 21 March 2015, 21:28:22 »
Quote from: Kate on 21 March 2015, 21:26:41
Quote from: STMO on 21 March 2015, 21:24:57
Quote from: Kate on 21 March 2015, 21:13:29
What's that programme called where they test theories?

That would be interesting to watch.
You've been told the answer to your question about four times, you stupid woman. Move on. ;D

No-one has tested it though so it's just a theory, you stupid man. ;D
Turn your instant consumption display on and watch it as you travel downhill with your foot off the accelerator.  :P
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Kate

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Re: Improving fuel economy
« Reply #13 on: 21 March 2015, 21:33:46 »
Quote from: STMO on 21 March 2015, 21:28:22
Quote from: Kate on 21 March 2015, 21:26:41
Quote from: STMO on 21 March 2015, 21:24:57
Quote from: Kate on 21 March 2015, 21:13:29
What's that programme called where they test theories?

That would be interesting to watch.
You've been told the answer to your question about four times, you stupid woman. Move on. ;D

No-one has tested it though so it's just a theory, you stupid man. ;D
Turn your instant consumption display on and watch it as you travel downhill with your foot off the accelerator.  :P

I did that and it said 150mpg. :y
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05omegav6

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Re: Improving fuel economy
« Reply #14 on: 21 March 2015, 21:38:01 »
Which is infinitely better than 0.4 gallons an hour :y
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