[Diy_efi] The so called "Noid" lights ?

Mon Sep 10 03:46:08 UTC 2007

Thanks for the comments guys,

It probably would help if I explained the reason I raised the subject.

These days modern electronics can be quite sophisticated, small and low cost,

It should therefore be possible to design a "smart" noid light which does the very least such as:-

a. Be "inline" with the drive to the injector to observe simultaneous operation.
b. Have it show polarity is the same on all injectors (assuming all 6 are wired correctly)
  in situations where people build up looms and/or wishing to avoid polarisation if that is an issue.
c. Have it indicate whether the injector has a shorted turn.

I dont need a Noid light for myself, though it might be a handy tool to leave in the box.

Its raised my interest how people swear by them on the forum I listed yet, to me, they
seem very simple dumb devices and for the price I would have expected a little more.

These days with LEDs using so little current (in comparison with the injector) it shouldnt
be necessary to worry about the injector resistance and just wire in a light in parallel in
some type of inline connector arrangement.

Of course the electronics can be cheap and low cost even for a little sophistication
but it seems the packaging and presentation can still be a pain and I guess this is a stumbling
block...

Thanks for the link to etoolcart but so far, that is the only one I have found even from the calaisturbo
site, there just dont seem to be any other people doing them on a commercial basis anywhere,

Thanks

Mike

At 10:36 AM 9/10/07, you wrote:
>Mike,
>
>I made one - I measured the resistance of the injector - then a small light
>- I added resistors to make the resistance similar.  I wired it in in place
>of the injector.  It seemed to work - it would light up about when I thought
>it it should.
>
>It seemed to work - but I never got the car running - so I'm not sure this
>is a good idea.
>
>Bobby
>
>On 9/9/07, Mike <niche at iinet.net.au> wrote:
>>
>> Over here in Oz, a "Noid" light seems to be just a simple LED
>> which goes in parallel with the injector, its a tool to verify the ECU
>> is driving its injector output and that the signal is getting as far
>> as the injector, ie All the way through the loom.
>>
>> You basically, unplug the injector connector and plug in the Noid
>> light intot he injector and the injector connector into the noid so
>> the noid is "inline" to the injector, when the injector is driven the
>> light is supposed to come on.
>>
>> My question is,
>>
>> Is this just a basic light or are there any inline type testers like this
>> that
>> are any more sophisticated ?
>>
>> I'm not complicating this at present with any Duty cycle issues, just
>> wishing
>> to find out if people are using anything more sophisticated than a simple
>> LED for their inline injector testing ?
>>
>> Regards
>>
>> Mike
>>
>>
>>
>>
>>
>> At 02:35 AM 9/10/07, you wrote:
>> >Im not exactly sure what you are looking for, but this little tester is
>> very
>> >cool.  Its a dual led test light.  Magnetic pickups can light the leds in
>> >this.  Its a pretty helpful little test light.
>> >http://www.etoolcart.com/index.asp?PageAction=VIEWPROD&ProdID=248
>> >
>> >You could try searching "injector pulse width meter" Not too much comes
>> up
>> >but i think this is more what your lookin for. Besides these, i cant
>> think
>> >of anything besides an oscilloscope.
>> >
>> >On 9/9/07, Mike <niche at iinet.net.au> wrote:
>> >>
>> >> Hi chaps,
>> >>
>> >> Nice to see some activity here re logging, a subject in itself, I have
>> >> idea for small cheapie
>> >> logger and finally pinned down an enclosure/connector combo, but its
>> not
>> >> USB, just serial
>> >> but would work for the most part with the cheapie usb to serial
>> >> adaptors...
>> >>
>> >> Anyway, i digress...
>> >>
>> >> I'm on http://www.calaisturbo.com.au  from time to time as "Niche" -
>> funny
>> >> that...!
>> >>
>> >> And some people use "Noid" lights to test they have drive to the
>> >> injectors, which is (as far
>> >> as I understand) just a LED light in a moulding which is pluggable
>> inline
>> >> with the loom
>> >> to the injector at the actual injector. So you can see it blink when
>> >> cranking etc...
>> >>
>> >> I'm interested to know if anyone has a "noid" like type tester or item
>> >> which does any more
>> >> than just light up an LED when the driver wants to turn on the injector
>> ?
>> >>
>> >>
>> >>
>> >>
>> >> Regards from
>> >>
>> >>
>> >> Mike
>> >> Perth, Western Australia
>> >> VK/VL Commodore Fuse Rail panel that wont warp, twist or melt,
>> >> guaranteed  !
>> >> Twin tyres for most sedans, trikes and motorcycle sidecars
>> >> http://niche.iinet.net.au
>> >> _______________________________________________
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>>
>>
>> Regards from
>>
>>
>> Mike
>> Perth, Western Australia
>> VK/VL Commodore Fuse Rail panel that wont warp, twist or melt,
>> guaranteed  !
>> Twin tyres for most sedans, trikes and motorcycle sidecars
>> http://niche.iinet.net.au
>> _______________________________________________
>> Diy_efi mailing list
>> Diy_efi at diy-efi.org
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>
>
>
>-- 
>Toward freedom,
>
>Bobby Yates Emory
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