Hi All. I,ve just bought a low milage 2004 td5 auto and having never owned an automatic before I was wondering at what speed the gears are surposed to change up at . It seems to me to be abit slow at changing up and seems to select 4th at just over 50mph. You also have to almost lift your foot off the power to get it to change up is this correct???. It has only done 50000 and I was told it has had a trans filter and fluid about 2000miles ago but I haven,t any evidence.
Auto trans speeds????
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jamesmartin
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worth changing the oil if its clean just refill with 4-5 litres of oil, if its brownish remove sump and replace filter, if its blackish box wont last long 50 ish mph is right for lock up
Rough guide td5 disco auto:
1st into 2nd approx 13mph
2nd to 3rd approx 26mph
3rd to 4th approx 37mph
4th gear torque converter locks 52mph ish
The box tends to hold onto gears for longer whilst cold.
If your towing up a long hill m/way hill slip the box into 3rd and TC will lock. Much less painfull than it dropping down and the TC slipping like buggery and deathening everyone in the car
HTH.
1st into 2nd approx 13mph
2nd to 3rd approx 26mph
3rd to 4th approx 37mph
4th gear torque converter locks 52mph ish
The box tends to hold onto gears for longer whilst cold.
If your towing up a long hill m/way hill slip the box into 3rd and TC will lock. Much less painfull than it dropping down and the TC slipping like buggery and deathening everyone in the car
HTH.
Last edited:
thebiglad
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To be honest the changes can be so smooth it's not that easy to know when a gear has changed. It's MUCH easier to tell when you go into top gear TC (Torque Converter) lock-up.
+1 when the TC is locked up, it drives like a manual, direct drive, unless you put your foot down for quicker acceleration the TC will unlock and the box will kick down to 3rd.
discool
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It didn't come with an owners handbook then? as this info is inside.
Gear change speeds
With D selected, the road speeds at which gear changes take place will vary according to the position of the accelerator: minimum acceleration will result in gear changes at low road speed, while larger throttle openings will cause the gearbox to delay gear changes until faster road speeds have been reached (thereby increasing acceleration).
With practice, gear changes can be made to occur at a wide range of road speeds depending on accelerator pedal pressure.
On long inclines the gearbox will sometimes change back and forth between gears. This occurs because the transmission does not include a ratio that is precisely right for the particular incline and vehicle loading circumstances. However, excessive gear changing results in a loss of momentum and is wasteful of fuel. It can be prevented by selecting the 3 or 2 positions which limit the gearbox to lower ratios.
Kick-down
To provide rapid acceleration for overtaking, push the accelerator pedal to the full extent of its travel in a single quick movement (this is known as kick-down). Up to a certain speed, this will cause an immediate downshift into the lowest appropriate gear, followed by rapid acceleration. Once the pedal is relaxed, normal gear change speeds will resume (dependent upon road speed and accelerator pedal position).
thebiglad
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"MODE SWITCH
In High range press the mode switch to select Sport mode (the S information light on the instrument panel will illuminate).
In Low range press the mode switch to select Manual mode (the M manual information light will illuminate). Press the switch a second time to return the
gearbox to normal operation.
Sport mode
With Sport mode selected, the gearbox is more responsive to accelerator pedal movement - downshifts occur earlier and upshifts are delayed to make optimum use of the engine's power while accelerating. Select Sport when increased acceleration is required, or when negotiating long inclines or twisting roads.
Note that driving in Sport mode will increase fuel consumption.
Manual mode
In Low range, with Manual mode selected, the automatic transmission functions as a manual gearbox requiring the driver to move the selector lever manually to change gear (D = 4th gear). Manual mode will provide maximum vehicle control and engine braking - ideal for use in severe off-road conditions.
Note that kick-down is disabled and that automatic downshifts will only occur to prevent the engine from stalling.
NOTE: Switching off the engine or using the
transfer gearbox will automatically cancel
Sport or Manual mode."
"Rapid acceleration" on a Disco that's a laugh !!
The mode button whilst transfer box is in high will put the box in sport mode. Will hold onto the gears even longer.....! WHY...?!
In low range it will put the box in manual mode. I e hold in any of the 4 gears you want it to (D being 4th as it's not obvious)
The mode button whilst transfer box is in high will put the box in sport mode. Will hold onto the gears even longer.....! WHY...?!
In low range it will put the box in manual mode. I e hold in any of the 4 gears you want it to (D being 4th as it's not obvious)
srtgray
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So that when you are cresting a long hill or negotiating a twisty road, the 'box doesn't keep shifting in and out of gear - although you can just put into into 3 to achieve the same thing. ON a TD5 with its accelerator-by-wire system, it also makes the engine more responsive to changes in pedal position, i.e. "tightens up" the throttle.
Never bothered with it on mine. Waste of time IMO. However manual mode in low range was Very.good.
