jon@dakota-truck.net wrote:
> Phil Jenkins <bugnik@yahoo.com> wrote:
>
>
>>Ok, I hook up my scanner with engine off. I have 29"
>>of barometric pressure from MAP sensor. Start truck,
>>at idle I have about 11" showing on the scanner.
>>29-11=18" of vacuum. I plug the exhaust and have 20"
>>on the scanner. 29-20=9" of vacuum. Less vacuum with
>>exhaust plugged, higher reading on scanner. Does that
>>sound right? (Pouring some gasoline on the fire.)
>
>
>
> Your results are exactly what I would expect to happen, yep!
>
So what does all this mean in relation to the scan tool data that I
recorded from my Ram?
http://www.jonsteiger.com/scan/out
^^^ Jons spread sheet format
http://members.aol.com/silvereightynine/01_ram_scandata.txt
^^^ first reading
http://members.aol.com/silvereightynine/01_ram_scandata_2.txt
^^^ 2nd reading...
I see consistant radings where I accelerate (TPS percentage increases,
RPM increases) and the MAP sensor value decreases?
Refresh my memory here... the higher the number value that the MAP
reports - the more vacuum? And the lower the value - the closer the
manifold is to external air pressure levels? (meaning less negative vacuum)
Right?
-- ------------------------------------------------------------ 50 seconds of pleasure, 50 years of regret... Wookiee Love is pointless - Anarchy Steering Committee ------------------------------------------------------------ http://members.aol.com/silvereightynine/ AIM & Yahoo: SilverEightynine ------------------------------------------------------------
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