[Gmecm] TBI Swap - Iron Duke Tech IV

[Steve Ravet]

> went...  For VSS, I do not need it do I?... my speedo is 
> mechanical into my Transfer Case so I can just not use the 
> VSS plug and cap it off / pull the wires, right?  VSS 
> shouldn't send any info to the ECM that would deal with 
> anything except shifting the transmission, and your MPH on 
> the Dash Display, correct?

VSS figures into more than you might think.  It's involved in idle, as
the computer doesn't attempt to control idle until VSS is zero.  It also
resets the IAC position above a certain speed.  It's involved in
cannister purge, and maybe other things also.  Given that it's easy to
install with one of the inline sensors, there's no reason not to have
it.  Plenty of stories in the archives from people who had idle or other
problems until they installed the VSS.

--steve


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