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A LITTLE HELP PLEASE (WHATS THIS SWITCH FOR?) LJ 70
Posted: Sun Sep 24, 2006 5:47 am
by Ravenous Rhino
hi in the picture below (THIS IS NOT MY ENGINE JUST FOR REFERENCE)there is a vacuum pipe behind the alloy inlet pipe, from the vacuum pump to this small switching valve. then it goes to the injector pump. i have just replaced my 2.4 2lt engine with the 3.0 1kz one. As you will probably know there are a few differences in the two. from what i can make out this switch shuts of the vacuum from the pump and is controlled by something.
if i have valve in closed position truck goes fine boost presure rises but doesnt pull really hard. if i open the valve boost goes up and it pulls very well. Now this swith is there for a reason, this i know but what? does it shut off boost fuel if overboost accures or is it switched only at high boost pressur. if someone knows what it is for and its correct operation then i can maybe get it to work as i had to modify engine loom from 2.4 to get all electrics working. thanks
Re: A LITTLE HELP PLEASE (WHATS THIS SWITCH FOR?) LJ 70
Posted: Sun Sep 24, 2006 4:30 pm
by gotoy
Ravenous Rhino wrote:hi in the picture below (THIS IS NOT MY ENGINE JUST FOR REFERENCE)there is a vacuum pipe behind the alloy inlet pipe, from the vacuum pump to this small switching valve. then it goes to the injector pump. i have just replaced my 2.4 2lt engine with the 3.0 1kz one. As you will probably know there are a few differences in the two. from what i can make out this switch shuts of the vacuum from the pump and is controlled by something.
if i have valve in closed position truck goes fine boost presure rises but doesnt pull really hard. if i open the valve boost goes up and it pulls very well. Now this swith is there for a reason, this i know but what? does it shut off boost fuel if overboost accures or is it switched only at high boost pressur. if someone knows what it is for and its correct operation then i can maybe get it to work as i had to modify engine loom from 2.4 to get all electrics working. thanks
Is that switch on the turbo pipe?
What vehicle did you aquire the 1KZ from? Auto ot manual?
Posted: Sun Sep 24, 2006 7:58 pm
by Ravenous Rhino
it bolts to the alloy pipe but is not connected to it in any way.
Posted: Sun Sep 24, 2006 8:59 pm
by Modified Toy
i believe is is a over boost control valve have genuine toyota book will have a look at it an post info tomorrow
Posted: Sun Sep 24, 2006 9:16 pm
by Ravenous Rhino
ok thanks
Posted: Mon Sep 25, 2006 12:09 am
by gotoy
Modified Toy wrote:i believe is is a over boost control valve have genuine toyota book will have a look at it an post info tomorrow
Thats the pressure release valve. Too high pressure and it opens.
Posted: Mon Sep 25, 2006 2:05 am
by Ravenous Rhino
i dont think it is because one end of the pipe that comes from it goes to the vacuum pump and then throgh the valve to the back of the injector pump. i think it more likely to be an overboost valve to shut off the extra fuel that is injected during boost as sugested by modified toy.
Posted: Mon Sep 25, 2006 8:24 am
by NiftyNev
Looks like a VSV (Vacuum Solenoid Valve) which will be switched by something to do with boost. Can't help as to where and what it will be wired to.
Someone on the Surf Forum could probably help.
You may find something here -
http://www.showmesome.info/hilux/info/manuals/1KZ-TE/
Nev
Posted: Mon Sep 25, 2006 8:33 am
by NiftyNev
Check the Turbo section in the above link.
Nev
Posted: Mon Sep 25, 2006 1:52 pm
by Modified Toy
Posted: Mon Sep 25, 2006 6:03 pm
by Ruggers
its not the idle up for the a/c as thats what is looks like
