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May I pick the collective brains please......that sounds like something out of Star Trek but never mind!
I have not had a rev counter on a vehicle before and am not sure what revs I should aim for, I have a Fiat 2.0 litre Common Rail Diesel. Can someone please give me an idiots guide or pat me on the shoulder and say ignore it.
Thank you HelenB
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we are the opposit way our car has one but ar hur doesn't - so i do what i always do and listen to the engine - it will tell you when revs are too high
However this isn't very technical but i'm sure someone will give you a better answer
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Rev counters are a relatively new thing. In th'old days it was just familiarity with your vehicle that told you when to change gear (if that's what you're using your rev counter for).
Every type of engine is different so someone who has the same engine as you should give you guidance.
I keep an eye on my rev counter I must admit and I make myself some simple rules only because I'm a bit anal to be honest. For instance... I don't rev the engine more that 2000 rpm when going up through the gears. And if I come to a thirty mph limit I generally change from 5th gear to 4th otherwise the engine will labour just a bit too hard. Changing down is slightly different but what I don't do is coast along.
Oh... I should have mentioned that my engine is a Fiat 2.3 JTD
Generally speaking, you shouldn't rev the balls off any engine and you should change up at around the point that the vehicle reasonably pulls away in the higher gear without straining the engine. Change too soon and you could possibly stall the engine. Leave it too late and you'll eventually blow it up.
Having typed all that I can see that I may come across a bit patronizing like but I hope it helps.
andy
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Helen,
The best answer would be to ignore it and go by your instincts...after all it is a MH you are driving not a racing car.
But if you want something reflecting a technical answer then I would suggest what you need to do is obtain for your vehicle the Power, Torque and Specific Fuel Consumption curves for that engine, and then ,from a book in the local library, learn how the three curves can be interpreted to give either best acceleration through the gears or best fuel economy, which are not necessarily the same thing. But if I was you I'd just forget the thing is there , your ears will tell you to change gear long before the revcounter does
Oh, I forgot If you find out the mph per rpm figure it is possible to cross reference the two to see if your speedo is accurate!!
nobby
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On the rev counter, there should be a red band at the upper end of the scale, if the needle hits that then you are over revving the engine and could cause damage, everything else is just extra information you dont need to worry about.
Modern engines are often 'fly by wire' and the ems will not allow the engine to exceed maximum revs. This being the case, there is no need to be concerned about 'over revving' and little need to red zone the rev counter.
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[quote:1de32f1d91="Maxonian"]Modern engines are often 'fly by wire' and the ems will not allow the engine to exceed maximum revs. This being the case, there is no need to be concerned about 'over revving' and little need to red zone the rev counter.[/quote:1de32f1d91]
how very true....
I drive my honda accord like a bit of a teedoubleyooaytee at times and when I floor it in first the revs hit a certain level the engine sort of cuts out momentarily.
not trying that in me van though
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Thank you to everyone who helped.....as the consensus seems to be don't worry I will keep on driving in my usual style...i.e. if the pans don't fall out of the locker and my Irish setter isn't car sick then I'm doing OK!
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HelenB
Thank you to everyone who helped.....as the consensus seems to be don't worry I will keep on driving in my usual style...i.e. if the pans don't fall out of the locker and my Irish setter isn't car sick then I'm doing OK! 