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Old 07-23-2008, 09:02 AM   #10 (permalink)
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Originally Posted by dremd View Post
That PDF gave me an Idea; does anyone know what kind of signal comes out of the needle lift sensor?
The needle lift signal should look somewhat like the left or right part of this image:

What do you think about the modulating piston movement sendor (G149)? It is used by the ecu as a feedback on the N146 position to determine the actual injected quantity.

I have a pot between pins 2 and 3 of G149. When I increases the resistance, the ecu is fooled and the actual injected fuel quantity goes up. At idle I can see the consumption go down on the scangauge as I increase the resistance, when in fact the injected quantity actually higher.

I do not really know the signals specifics and do not have access to equipment to look it out.
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Last edited by tasdrouille; 08-18-2009 at 08:41 AM..
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