AuthorTopic: FAO Linda (Or anyone else).  (Read 2553 times)

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Offline Andy.

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FAO Linda (Or anyone else).
« on: February 23, 2005, 21:32:48 »
Question again regarding the wifes mates 4 Runner.

Today in this weather she was driving up a slope (she said hill) and started to slide. She pressed a button on the side of the main gear lever (it's an auto) and on dash a light came up saying 'over drive off'  :?:

So what does this mean  :?:

How should the vehicle be driven in normal conditions, with over drive or not  :?:

She was in normal drive at the time and not in low box.

Any advice welcome please  :wink:
Andy Member # 8






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ChrisW

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FAO Linda (Or anyone else).
« Reply #1 on: February 23, 2005, 22:21:47 »
An overdrive is like a fifth gear but bolted to each gear so you can go 1st, 1st overdrive, 2nd, 2nd overdrive, 3rd, 3rd overdrive etc etc (I think!)

More useful on motorway driving tho - not sure what difference it would have made to whether the car was slipping or not unless it was in too high a gear with the overdrive on?

Offline hobbit

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FAO Linda (Or anyone else).
« Reply #2 on: February 23, 2005, 22:26:55 »
Had a toyota lite ace, which was auto with this overdrive switch on, all mine did was remove the extra gear, stops it hitting a too higher gear if the wheels start spinning, the gearbox thinks its time to change up again
Kev

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Hybrid for running round (got to go now)
Srs 3 Lightweight petrol (got to go)
Srs 3 Lightweight petrol, runabout

Not every problem can be solved with duct tape, and it's exactly for those situations we have WD 40

Offline Slugsie

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FAO Linda (Or anyone else).
« Reply #3 on: February 24, 2005, 00:25:47 »
OK, I've got a Surf (Jap version of the 4Runner). The OverDrive (as already mentioned) is basically just another gear.

I tend to drive around town with it turned off as it allows the engine to rev a bit higher, thus meaning it doesn't labour too much (which improves economy a bit). Once speeds consistently get over 40 I always have overdrive on as it allows the engine to run at a lower speed and thus more economically. It also allows the torque converter to lock up giving a bit more economy.
</Slugsie>

Offline laser_jock99

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FAO Linda (Or anyone else).
« Reply #4 on: February 24, 2005, 00:52:02 »
Overdrive Off- is also usefull for towing and going up long hills. It won't help pressing that particular button on a slippy slope- engaging 4WD (the big button on the Hi-LO lever) would!

Nevillef
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Offline Linda

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FAO Linda (Or anyone else).
« Reply #5 on: February 25, 2005, 18:25:35 »
Andy, I've tested it on and off and never found it made much difference to MPG or handling other than when towing up a steep hill with a heavy load.

It wont make any difference to sliding on the snow. That is more likely due to a combination of tyres, road condition and driving. I find my BFG A/T's are excellent in snow and ice, but in very icy conditions I do pop it into 4wd (make sure it really is icy though or you will wind up the transmission by driving on Tarmac with no slip.

:D
Linda  

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Offline Andy.

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FAO Linda (Or anyone else).
« Reply #6 on: February 27, 2005, 18:44:39 »
Cheers Linda and everyone else for the info, I'll pass on your comments.
Andy Member # 8






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