DIY_EFI Digest V5 #451

[BT]

Thanks for the reply, Chad -

Dumb (maybe?) questions:  which pot(s) would be adjusted in the circuit to
get the 'free air' value' referred to?  Do any gas suppliers sell
'calibration gasses' to set these things?  I believe there are CO mixes
available for checking Emissions Testing machines (and for Dr. Kevorkian....).

Thanks - Barry

At 09:21 AM 01/18/2001 -0600, Chad Clendening wrote:
>Yes, there was a mistake in the power connection to one of the 2
transistors in this
>area and I think also to the op amp right before that.   I was under the
impression
>the transistors were correct, just the power was connected wrong.
>
>The free air cal -  it is supposed to be possible, but I don't really know
what a/f to
>set the free air to.  I do know that the free air current is about 5-6 mA,
>significantly more than anything I ever saw on the engine.  0 mA is 14.7
>
>
>Chad

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