idle up switch

[dhula Member Find all posts View Profile Close dhula]

Re: idle up switch

i agree most (if not all) cruise controls these days are based on vehicle speed and not engine speed
however i have come across some cruise controls that can be used to increase/decrease engine rpm while the vehicle is stationary.
i found it by accident in a few trucks while piss farting around
i've only found this function to be on trucks so far, but as the D4D is a bit more modern than my 1KZ (on which the cruise doesn't control RPM while stationary) i thought it'd be worth a try to see if it worked
if it does work then it's an easier option than making stuff and tapping into the wiring for the ECU
if it doesn't work then nothing lost but 5 mins of time

perhaps someone could give it a go and post back with a yes or no

[adrian5800 Advanced Member Find all posts View Profile Close adrian5800]

Re: idle up switch

i have come across some cruise controls that can be used to increase/decrease engine rpm while the vehicle is stationary.
i found it by accident in a few trucks while piss farting around

We have some European trucks at work with this feature and It is used to raise the idle speed for use with a PTO.

Regards

Adrian

[MickL Addicted PP Member Find all posts View Profile Close MickL]

Re: idle up switch

perhaps someone could give it a go and post back with a yes or no

It doesn't work... the Prado cruise is based on road speed. It receives its speed signal from the ABS computer/wheel sensors (Except for early GX models without ABS and the its from a hall effect sensor on the final drive).

It also wont engage under about 40kmph.

Mick

[winniliss Avid PP Poster! Find all posts View Profile Close winniliss]

Re: idle up switch

How are we going with this idea guys?

[karrathaprado2 Senior Member Find all posts View Profile Close karrathaprado2]

Re: idle up switch

Decided to much involed in doing this...without an expert electronic person. To many varibles. Plus all the crap going around about the accelerator sticking on other toyotas did not want to chance it.

[snewby Junior Member Find all posts View Profile Close snewby]

Re: idle up switch

OK, heres the gen... The idle switch on D$D prado will only work with a cold motor. It will raise the idle speed until the engine warms up. When the engine is warm ... it will do nothing.
Cheers

[damonat Advanced Member Find all posts View Profile Close damonat]

Re: idle up switch

see this for info on 1kz idle up switch and wiring.
it works independant of engine temp, and only drops when put into drive or reverse.
the moment you re-select neutral or park, the revs increase. you can then press your momentary switch and revs drop to standard.
this will be awesome when winching next, or on a very hot day with AC on stopped.

viewtopic.php?f=12&t=7090

[raydhillon Junior Member Find all posts View Profile Close raydhillon]

Re: idle up switch

OK, heres the gen... The idle switch on D$D prado will only work with a cold motor. It will raise the idle speed until the engine warms up. When the engine is warm ... it will do nothing.
Cheers

agreed !

i believe the petrols one dont have this and this is used only to heat up the diesal engine for optimal operating temperatures !

[Alchemist Lurker Find all posts View Profile Close Alchemist]

Re: idle up switch

OK, heres the gen... The idle switch on D$D prado will only work with a cold motor. It will raise the idle speed until the engine warms up. When the engine is warm ... it will do nothing.
Cheers

agreed !

i believe the petrols one dont have this and this is used only to heat up the diesal engine for optimal operating temperatures !

X2 - that's how it works on mine

[Bryan784 Lurker Find all posts View Profile Close Bryan784]

does anyone know why my idle up switch would stop working?

[mjrandom Out of control poster! Find all posts View Profile Close mjrandom]

You live in Karratha and it is eleventy five degrees C in the shade. Idle up works below 10C ish.

[cfryback Find all posts View Profile Close cfryback]

does anyone know why my idle up switch would stop working?

Depends on air temperature as well. Mine hasn't engaged for the last week - only because overnight temps are only getting down to 12 or so.

[Bryan784 Lurker Find all posts View Profile Close Bryan784]

thanks

Depends on air temperature as well. Mine hasn't engaged for the last week - only because overnight temps are only getting down to 12 or so.

makes a lot of sense... with this heat in karratha the idle up hasn't kicked in lately, good to know i haven't stuffed it up by adding a cb (as i was thinking i had).

[120D4D Avid PP Poster! Find all posts View Profile Close 120D4D]

Perhaps with the heatwave sweeping our land we should be looking into idle-downs. - If idle-ups warm up the engine then idle-downs must keep things a little cooler under the bonnet...

[Bushbasher Out of control poster! Find all posts View Profile Close Bushbasher]

The car had sat idle for 3 days then on last Sunday arvo the EGT read 62 degrees and I hadn't even started the engine. The outside gauge read a measly 46.