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Location:
Sydney
Registered:
April 2005
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a few questions on 20v with microtech, fan switch, iscv, vsv
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Tue, 25 October 2005 15:34
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I've got a few questions about my 20v with microtech LT10, If
anyone knows about them would you please give me some advices. 
# 1: I'm about to wire up my vvt vsv and iscv anyone knows where can I get the plugs for them?
# 2: I bought an electric fan for my ae86, its from wrecker and off a car called cc, although I don't know what it is. But it comes with a water temperature sensor. I have just wired up the fan with a relay. The relay is now from ignition to ground on the lower current side, battery to fan motor on the higher current side, then to ground. There are two wires out of the water temp sensor, which I think one is the positive signal, another one is just ground as it joints to the fan motor's ground wire orginally.
My problem is that the fan always on, which keeps the motor being too cold, which is not a good thing. I want to make a switch so that when the water temp is hot, the sensor opens circuit and the fan turns on. Anyone knows how to do this? Is there a switch can do this which I can buy from somewhere?
Besides, I also thought of hooking up the positive signal of the water temp to my microtech's AUX Input 1, and use AUX out number 1 to the negative lower current plug on the relay(which is now to the ground), and use the microtech to control the fan, is it possible/necessary?
# 3: I'm using a microtech with silver top 20v, I want to have an air temp sensor, where can I get one?? can I just buy any air temp sensor of wrecker or do I need a specific one for my engine? please giveme some advice.
# 4: Last one is the oxygen sensor, again do I need a specific one for 20v? I know 20v original one has 4 wires but my microtech seems doesn't have 4 wires for the oxygen sensor, so should I just go get any oxygen sensor?
sorry for these lots of questions but I really want to wire up every component propelly before I bring the car to tune.
[Updated on: Fri, 28 October 2005 09:11]
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: a few questions on 20v with microtech, fan switch, plugs, sensors
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Wed, 26 October 2005 01:25
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1) I'm guessing you didn't get a cut loom with your motor? Wrecker will be the best bet
2) If you have a coolant temp switch for the fan, you don't need to use the Microtech to control it at all.
3) Grab one from any Delco powered Camira.
4) Not specific, 4 wire is just 1 wire with a heater.
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Location:
Sydney
Registered:
April 2005
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Re: a few questions on 20v with microtech, fan switch, plugs, sensors
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Wed, 26 October 2005 14:30
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1.)so are the plugs used by many toyota engine or specifically for 20v 4age only.
3.) Is this the old holden front wheel drive family car? I thought its engine is carby. what else can I get other than this? as I think this car is very old, the temp sensor from wrecker might have been stuffed. So what air temp sensor people usually use with 20v and microtech?
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: a few questions on 20v with microtech, fan switch, plugs, sensors
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Thu, 27 October 2005 00:45
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1) I have no idea what the vvt plug looks like, but I've only ever seen the ISCV plug on a couple of Toyotas. I think one of the 3SGE's had the same plug, can't remember though.
3) Yes, thats the one, but they released 2 efi versions.
One EFI version was run on Bosch, and I'm not sure if it used an airtemp sensor
The other EFI version was run on Delco, and it used an airtemp sensor at the base of the intake runner number #4.
2 wire sensor, screws in, can't miss it.
All VN-VR commies use it too. I'm not sure where it is on the V6, but the V8 has it at the base of runner #3 I think.
I'm 99% sure the Microtech will have been programmed for this sensor, but give Microtech a call, they will be able to tell you for sure.
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Location:
Sydney
Registered:
April 2005
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Location:
Sydney
Registered:
April 2005
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Re: a few questions on 20v with microtech, fan switch, plugs, sensors
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Thu, 27 October 2005 13:30
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also, for the iscv, the microtech manuel says there are three wires go into the iscv, the middle one is +12v while the other two is grey/green, grey/white. And the only grey/green and grey/white I can find from the microtech are the very short wires going into the microtech ignitor, which is ignition output #3 and #4, I think they are the right wire but the manuel doesn't name the wire. Just want someone who has experience to confirm.
[Updated on: Fri, 28 October 2005 08:15]
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Location:
Sydney
Registered:
April 2005
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: a few questions on 20v with microtech, fan switch, iscv, vsv
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Fri, 28 October 2005 10:48
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The ISCV usually controls all idles, cold, and warm.
With no control, it defaults to fully open (so if it fails the car won't stall).
The 3 wires are open, close, and power (I'm 90% sure its power and not earth).
The LT8S can control it with #3 and #4 if you are only controlling 2 coils (like I am), but not if you use them for controlling coils #3 and #4.
The LT10S has 2 dedicated controls for the ISCV.
When you have correct control of it, you can program the idle to come down to what ever you set (the control wasn't perfect on mine, not sure if it was setting or setup - ie, on the car).
Understand?
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