What does this lock button do?

[gqpew]

I've seen this since I've had the Mav and I'm just wondering what it's used for.

11487

Cheers

[YNOT]

Hand throttle. Lets you hold the engine revs up without using the accelerator, good for rough driving where your foot would be bouncing on the pedal. DO NOT USE AS A CRUISE CONTROL.

Tony

[NissanGQ4.2]

if you pull it out and turn it ( clockwise i think ) it holds your revs up

[gu radelaide]

yeh hand throttle use it extreme low range stops ya foot slipping

[MudRunnerTD]

Also good to use when your winching to keep your revs up without having to think about it. You usually have other thIngs on your mind when your winching. Helps keep alternator charging and gives you some revs if you need to drive.

Can be handy though I cant say I use mine these days but you should have a play around with it.

[taslucas]

Its actually a choke with a lock to hold it on. Used more for cold mornings rather than as an acceleraion aid. The symbol under the word "lock" (like this: / with a dot in the middle) is the international sign for a choke.

[NissanGQ4.2]

Its actually a choke with a lock to hold it on. Used more for cold mornings rather than as an acceleraion aid. The symbol under the word "lock" (like this: / with a dot in the middle) is the international sign for a choke.

Choke's do not have a lock on it as far as I'm aware, it is a Throttle / Idling Control Knob, but the use for it you are correct.

Uses

Cold Engine
Winch

Tonys "Lets you hold the engine revs up without using the accelerator, good for rough driving where your foot would be bouncing on the pedal" is not listed in the owners maunual" Says something big black letter, Avoid driving the vehicle with the throttle/idling control pulled out.......

But I agree with Tony, and have used it plenty of times before.

[patch697]

Its actually a choke with a lock to hold it on. Used more for cold mornings rather than as an acceleraion aid. The symbol under the word "lock" (like this: / with a dot in the middle) is the international sign for a choke.

Sorry mate but you are incorrect its not a choke at all & has nothing to do with the choke mechanism. It is indeed a hand throttle control with a lock to enable it to maintain a desired setting put in place be the operator.

It is operated by pulling it out to reach the desired range & when turned clock wise it holds that specific setting until the hanle is turn anti clock wise to release it at which time it returns to its base position.

[taslucas]

hey im sure you know more than me but that symbol is the international symbol for choke

[taslucas]

when my gq is a bit cold in the morning it likes to stall. I pull this on and twist to lock to keep the revs up until it warms up and will idle by itself.

[BigMav]

Yeah mate it maybe the same picture but it definitely isn't a choke. A choke is historically a butterfly valve on a carburettor which when closed allows more fuel and less air in. This doesn't work on a diesel I'm afraid, which has the same picture. Its a hand throttle thats for sure.

[taslucas]

Yeah mate it maybe the same picture but it definitely isn't a choke. A choke is historically a butterfly valve on a carburettor which when closed allows more fuel and less air in. This doesn't work on a diesel I'm afraid, which has the same picture. Its a hand throttle thats for sure.

yeah thats true... never thought about diesels. Perhaps they put that symbol on it to let you know that it should be used as a choke (even though its nothing to do with restricting airflow). The older troopy's have "throttle" writen on the hand throttle.

[AB]

I know what you mean by the symbol though mate.

I think the symbol can basically mean "liquid speed flow" and the symbol shows a mechanism that can allow more or less fuel to go through.

[NissanGQ4.2]

Hope this clears it up, sorry for the poor scan

11492

11493

11494

11495

[taslucas]

I know what you mean by the symbol though mate.

I think the symbol can basically mean "liquid speed flow" and the symbol shows a mechanism that can allow more or less fuel to go through.

oh yeah that would make a lot of sense. Has anyone seen this symbol on anything else? like maybe hydaulics?

[AB]

oh yeah that would make a lot of sense. Has anyone seen this symbol on anything else? like maybe hydaulics?

Just a million chokes that's all....LMAO

[taslucas]

Hope this clears it up, sorry for the poor scan

11492

11493

11494

11495

clears it up for me.... nissan call it a throttle/idle control. Sorry for going off on a tangent everyone!

[NissanGQ4.2]

clears it up for me.... nissan call it a throttle/idle control. Sorry for going off on a tangent everyone!

No need 2 be sorry, I don't mind a tangent here and there, + you have kept me entertained for the last 20mins or so*L*

[taslucas]

No need 2 be sorry, I don't mind a tangent here and there, + you have kept me entertained for the last 20mins or so*L*

haha .....ok point me in the direction of the next question then. LOL ill stumble along the wrong path for a while and keep ya entertained a bit longer! haha

[rockndot]

Yep, i'm with Taslucas on this, call it what you wish, but its a idler corrector for cold days to me,

Ha ha, i think everyone is right.
and whats more, old mate now knows what to do with it,plus
buy a patrol badge for the frount of the Mav

[the evil twin]

As said by others...

A 'traditional' choke only works on a carby petrol engine and "chokes" the air flow across a range of throttle openings enriching fuel/air mix. Ergo you cannot traditionally mechanical choke a fuel injected engine petrol or diesel.

A hand throttle does a different job as it adjusts the throttle input IE it's exactly the same as the foot throttle input and opens the throttle without changing or 'correcting' the engine fuel air ratio.

As per the manuals, it is a hand throttle or idle control for use as the operator see's fit. Largely disappeared these days but they were vital for any PTO application and still goddam handy for low range or rough terrain work.

There has been probably 100's of fatalities over the years because of hand throttles. Mainly farm related accidents were someone goes under the vehicle or tractor while feeding the stock or whatever after setting the throttle and jumping out of the seat to scatter feed from a tray or trailer.

[gec]

Also if ya want anymore proof, put ya foot on the accelerator pedal when ya pull the hand throttle knob and you will feel the pedal move, infact pushing the pedal down makes it easier to pull out the hand throttle.

[Mark_C]

Thats ticked one of my boxes, as i inherited the vehicle from my Dads estate i don't have an original manual and i wasn't too sure what it would do to the choke. Thanks for the heads up.
Mark

[mick64au]

Nice to see I am not the only Gumby - I thought it was a choke as well - but the lock part threw me. Winter coming so no doubt it will be getting used soon.

[bordertech]

oh yeah that would make a lot of sense. Has anyone seen this symbol on anything else? like maybe hydaulics?If it's a diesel it's a fast idle only, if it's a petrol it's choke to reduce the amount of air into the engine to make it run richer whilst increasing the idle at the same time for cold starts. So on a petrol it's a fast idle as well as a fuel-air mixture control. Diesels dont do or need this enrichment control. They have glow plugs instead to warm up the combustion chamber until a predetermined temperature is reached then they turn off. If the engine is already hot they may only stay on for a second or two.
Cheers, Dave

[taslucas]

This thread has figured out that the knob in the petrols is not a choke. It is a hand throttle only.

tappa slappn about

[L--RYDA]

Interesting thread ...Anyone had an issue of a stuck throttle control switch ? The one in question had been operating freely and turning anti clockwise / clockwise without any problem , now it seems as though it has been over-cranked and will not turn freely , its very tight and will not hold in place , it half turns back upon moving now, and feels as if its under pressure ? Any ideas for an easy fix , cheers?!

[doka404]

Its definitely a hand throttle.
From memory (an old mechanic explained it to me one day) the symbol is just a "universal" image represents the butterfly in a throttle body/carby. so it can be used for a number of things..ie hand throttle.

So if you see it on say a chainsaw which has a lever for a choke you will see two pictures like this.

http://www.nissanpatrol.com.au/forums/images/imported/2014/05/56.jpg

On the GQ's its common for that knob to break off by pulling on it and locking it (ie using it) so best thing is to gently press the pedal to where you want it, then you will see that the knob slides out easy and can be locked off. If you pull the knob out by itself it will move the accelerator pedal as well..or at least has on all my GQ's

[L--RYDA]

Thanks doka404 , just not sure about pulling the knob towards me , its seems that it can only turn clockwise/anti , and seems as though the scans on previous page only mention turning the knob not pulling it , cheers . I will try your suggestion though .

[MrSir]

Turning clockwise/anticlockwise was just a revised method of operating the control. Older GQ's had the pull/twist lock type, later patrols had the turn style. They changed from pull/lock to turn style to address the issue mentioned above, snapping. Only trouble I've had with the turn type in mine is it takes too bloody long to adjust when your bouncing about in the rough stuff.

[TimE]

Is it

|-| = Choke

)-( = throttle

subtle difference ?

[Agwang]

I asked my mechanic about this once and he said it was for when you were towing something, you can use it to keep the revs up (ie hand throttle)..... suppose to make towing easier. I use it for early morning start instead

[GQsweep]

I guess you can use it for what you like but on a 4X4 it's main function is for rock crawling, to stop your foot bouncing on the throttle when you bounce around in the cab.

[GQ1000]

G'day mates

Thank you everyone for making this thing clear as i was also wondering about its function. Can anybody please lemme know that how it operates? is it operated electronically or through a cable wire? as its not working in my GQ TD42.

[Col.T]

G'day Gman,
on my old GQ it was manual. A wire behind the 'button' went back to the fuel flow control under the bonnet and you simply pulled it towards you then twisted it and it gripped in position thus overriding the accellerator and setting a higher engine rev. speed.
If it's not working it's possibly because the adjustment, made by a simple lock screw device on the end of the cable under the bonnet, is out of position. Easily corrected by relocking the adjuster in place after feeding more cable through. Don't set it so that your idle speed is increased though. Could be that the eccentric gripping system on the knob is worn. Be a bit surprised but if so I reckon you're up for a new unit through the dashboard.
My later GQ has a slack arsed electronic button you push. No control at all and it's set up so it can't be used as a hand throttle. Hope you haven't got that metrosexual rubbish on your GQ.
Luck,
Col

[Dradyz]

It's cable driven if you pull it out you will see you right pedal pull down so it must link up to the throttle cable