Re: Testing the map sensor

From: Geoff (geoff_fahl_1@yahoo.com)
Date: Fri Apr 27 2001 - 22:42:52 EDT


heh heh, ya gotta love bein' a redneck.

Anyways, I attach the + probe of the volt meter to the center connector but
what about the - probe? ground or where?

Geoff
"Shane Moseley" <smoseley@ix.netcom.com> wrote in message
news:3AE95435.2B7E5AD2@ix.netcom.com...
> Indeed it was me. I wanted a way to watch my voltmeter (connected to MAP
> signal) while driving down the road and putting the vehicle under various
load
> conditions. I needed a connection method that would not come loose while
going
> over bumps, turning, etc. I use safety wire alot and one day while
walking
> around in a hobby/craft store I located several spools of thin stainless
wire -
> purchased the smallest they had.
>
> I pull the connector off and insert a 2-inch piece of the wire about 1/4"
into
> the female side of the connection (connector end). I then put the
connector
> back on allowing the extra wire to hang out of the connector. These I use
to
> clip the voltmeter leads to.
>
> On a good day (not raining) you can use your wipers to hold your voltmeter
> against the windshield for in-cab viewing.
>
> The redneck way - gotta love it!
>
> Latr,
>
> Shane
>
>
> Andy Levy wrote:
>
> > You need to "backprobe" them. Someone (Shane Mosely I think?) figured
> > out he could slip some very, very fine stainless steeel wire in
> > alongside the wires to make contact, then clipped his multimeter to
> > those.
> >
> > Geoff wrote:
> > >
> > > Hi, I'm trying to diagnose poor gas milage on my 95 dak 3.9 and I
found
> > > these instructions on the Mitchell Repair Info. DVD at school:
> > >
> > > it says where the MAP sensor is... I check the voltage from the
center
> > > termainal with the ignition switch on I should get 4.0-5.0 volts with
the
> > > engine runing it should be 1.5-2.1 volts. The test must be performed
with
> > > the connector in place. How can I test the voltage of the center
terminal
> > > if there is no way to get the dvom probes into the wire?
> > >
> > > Thanks,
> > > Geoff
> >
> > --
> > -andy
> >
> > http://home.twcny.rr.com/andylevy/ --- andylevy@bigfoot.com
> > -------------------------------------------------------------
> > modesty, n.:
> > Being comfortable that others will discover your greatness
> > -------------------------------------------------------------
>
> --
> '96
IndyRam-HisIndy-MPI/TB/Pulleys/AccelCoil/MPComp/HookerSuperComps/CompTAs
> '96 IndyRam-HerIndy-numbered(#142)"Track Truck"
> '74 Triple-Black Dodge Challenger Rallye 360 home-brew EFI R&D vehicle
> '68 Black Corvette Convertible 427 (For Sale)
>
>



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