Vehicle & Technical > Discovery
300tdi belt tensioner
muddyjames:
ooh thanks for that.
I have now picked it up and it is mine :D
I do see what you say about not very nippy but I am happy with that and I think I counted right and it dropped into 4th gear at bang on 50mph. It was doing about 1500rpm. Does that sound right for 4th gear. I am fairly sure it was 1500 not 2500.
I am mega shocked on the size of the diesel tank though. from having the light on to it filled up was £80. OMG But as I never allow a car to go into the reseve fule and the light come on it should only cost about £70 next time I hope. How many miles should I expect from my £80 worth of diesel?
muddysteve:
james it was the EGR i was talking about
when are you going to put the pictures up?
Steve
Matt_H:
--- Quote from: "muddyjames" ---ooh thanks for that.
I have now picked it up and it is mine :D
I do see what you say about not very nippy but I am happy with that and I think I counted right and it dropped into 4th gear at bang on 50mph. It was doing about 1500rpm. Does that sound right for 4th gear. I am fairly sure it was 1500 not 2500.
I am mega shocked on the size of the diesel tank though. from having the light on to it filled up was £80. OMG But as I never allow a car to go into the reseve fule and the light come on it should only cost about £70 next time I hope. How many miles should I expect from my £80 worth of diesel?
--- End quote ---
If it's a regular auto box the lock they are talking about is when the viscous unit is effectively cut out of the equation.
Think of an auto box's "clutch" as two big fans which sit in viscous oil, one fan is driven by the engine the other is connected to the gearbox in the normal way, the engine fan spins the fluid which spins the other fan. When it's on tick over you can easily hold the second fan still in the fluid by using the brake or park setting. This method always has losses - somewhere between 10 and 20 % I think is the norm so if a regualr disco does 30 mpg then an auto would only do 24mpg - this is the main reason qhy old autos had rubbish fuel economy (not so much to do with them having less gears as they are 'taller' as no clutch to burn out when slipping).. Anway to get around this you have something called lock up where something hard joins the two fans together and locks them so no loses are caused in the fluid, this is what I believe the others were refering to. To test drive along slowly accelerating from about 50mph, you should when you get to the speed mentioned see the revs drop off a little then increase.
How many miles will you get from £80 well assuming 30 mpg you should be able to work it out, 1 mpg = .21997 miles per litre .: 30 mpg = 6.59907 miles per litre,
£80 of diesel @ 98ppl = 82 litres
6.59907*82 = 533 miles or another way is to say it costs
15 pence per mile
Mine uses 20p per mile or about 23 mpg but then my throttle only has two positions generally!
muddyjames:
--- Quote from: "Matt_H" ---[
To test drive along slowly accelerating from about 50mph, you should when you get to the speed mentioned see the revs drop off a little then increase.
How many miles will you get from £80 well assuming 30 mpg you should be able to work it out, 1 mpg = .21997 miles per litre .: 30 mpg = 6.59907 miles per litre,
£80 of diesel @ 98ppl = 82 litres
6.59907*82 = 533 miles or another way is to say it costs
15 pence per mile
Mine uses 20p per mile or about 23 mpg but then my throttle only has two positions generally!
--- End quote ---
I shall try it out and see if the revs do drop off then go back up slightly. The manual says doing 56mph on a motorway I should get 41mph with an auto. I thnk that would be down hill with the wind behind in a lorries slip stream!!!
If I get over 500 miles from the tank I will be a happy bunny. That will be ALOT better than the 3.9 v8 auto range rover I had!!! Yes before you say it Matt. You were right! :P
Matt_H:
--- Quote from: "muddyjames
I shall try it out and see if the revs do drop off then go back up slightly. The manual says doing 56mph on a motorway I should get 41mph with an auto. I thnk that would be down hill with the wind behind in a lorries slip stream!!!
If I get over 500 miles from the tank I will be a happy bunny. That will be ALOT better than the 3.9 v8 auto range rover I had!!! Yes before you say it Matt. You were right! :P[/quote ---
the revs don't drop then increase slightly, they drop slightly then continue to increase as speed does.
At 56 mph you get 41 mph - how does that work???? ;-)
Matt
--- End quote ---
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