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Old 11-02-2009   #1
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Uno 45 FIRE ECOBOX

Greeting everyone!


What is the ecobox for. and if i don`t have on my engine is it bad because one friend of mine have the same uno with ecobox.
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Old 11-02-2009   #2
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Re: Uno 45 FIRE ECOBOX

Depends on the age of the car! if you need one and dont it will not run
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Old 11-02-2009   #3
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Smile Re: Uno 45 FIRE ECOBOX

But i still want to know how it works
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Old 12-02-2009   #4
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Re: Uno 45 FIRE ECOBOX

Quote Originally Posted by bbb88 View Post
But i still want to know how it works
Some Unos were fitting with a fuel saving 'economy' device, which is what I assume the ECOBOX is. The idea was to cut off fuel to the carburetor when the engine was on the overrun, which over time would save petrol. The economy Unos also had either a higher ratio fifth gear or differential (I forget which ) to raise the gearing, again to reduce fuel consumption but at the expense of performance.

I think the economy device used a small ecu that took vacuum readings from the inlet manifold, and possibly a switch on the carburetor throttle along with a crank sensor to determine whether the engine was idling or was in fact on the overrun. It then used a solenoid to shut off fuel to the carburetor only when the engine was in the overrun state.

Not many Unos came fitted with this econobox device, and to be honest the smaller engined Unos didn't really need it. The instrument panel booklet that came with mk1 Unos showed a different dashboard with a big econometer gauge and warning light for this economy model, but I've never seen one for real in the UK so it may have been a Europe only option.

You're better off fitting a vacuum gauge and adjusting your driving style in response to its readings if you really want save fuel with a Uno FIRE! My Uno 45S has an 'econometer' fitted (read vacuum gauge ) and on a long journey I tried hard to keep it in the yellow and green zones. End result was 62 mpg! See pic below, the lower middle gauge on the dashboard to see a factory fitted 'econometer' gauge in my mk1 Uno.

If anything the ecoboxes were more of an added complexity that could possibly cause problems so you're probably better off without one. It's not exactly as if the Uno is a thirsty car to begin with!

Hope this answers your question.

Chas

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Old 16-02-2009   #5
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Re: Uno 45 FIRE ECOBOX

thanks for detailed answer, but my uno don`t have econometer only this ecobox and it`s great i ask this because one friend of mine have one uno mk2 1.4 and in his car he have some "pipes" and cables. They just hanging there and we don`t know what they are for.
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Old 16-02-2009   #6
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Re: Uno 45 FIRE ECOBOX

can some one post some pics of this bloody thing

i have some black box im guessing something to do with emissio/econmical stuff, got a hose going to back of tb out of the little box and i can see some sort of filter/foam/sponge stuff in the black box through a hole in the top

do i actually need this crap?
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Old 17-02-2009   #7
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Re: Uno 45 FIRE ECOBOX

unonumero: that is carbon canister for fuel vapour recovery. Car works without it, but I think consumption will be a little higher. This system is described in Haynes manual if you want to know more about it.
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