Shane: As far as the voltages output from the MAP sensor...where do you
connect multimeter leads to get these readings? I'd appreciate your help!
Thanks!
Bob King
Pennsville, NJ
-----Original Message-----
From: Shane Moseley <smoseley@ix.netcom.com>
To: dakota-truck@buffnet.net <dakota-truck@buffnet.net>
Date: Wednesday, April 19, 2000 1:42 PM
Subject: DML: Re: MAP Sensor "Issue"
>Bob Tom wrote:
>
>> At 06:55 AM 4/18/00 -0500, you wrote:
>> >1.481-7.996 in-Hg (Avg 3.423) < this is a 4 year old presumably working
MAP
>> >sensor
>> >6.515-29.021 in-Hg (Avg 12.296) <- this was the bad MAP sensor
>> >1.481-9.180 in-Hg (Avg 3.745) <- Brand new MAP sensor
>> >
>> >I'm also pretty sure that the check engine light that related to a bad
MAP
>> >sensor is for values too high which makes sense according to these
findings.
>>
>> The latest information that I've been able to get a hold of is that,
depending
>> of barometric pressure:
>>
>> 1. with key on and engine off, MAP sensor should be outputting between
>> 3.5 to 5.0 volts
>>
>> 2. at idle, MAP sensor should be outputting between 1.0 and 2.0 volts
>>
>> Bob. Southern Ontario, Canada.
>> '97 Dakota CC Sport, FR, 5.2L, 3.55 SG, auto.
>
>Bob
>
>That jives with what I've measured also. To add more info - 29.5 in-Hg
w/key on
>engine off and 1.5-8.5 in-Hg while running according to my scan tool on at
least 3
>different trucks.
>
>I also plan to post (to my website) 3D maps of timing advance both with and
>without the MP computer as I have already collected the data. I'll be
plotting
>rpm vs map with advance points in the z-plane just like the ones at that
website.
>Will post a URL when I have them completed. Anyone recommend a simple 3D
plotting
>program that has good output? I want to feed it a flat ascii,
comma-delimited
>datafile w/3 values per line w/each line as a different timeslice.
>
>Latr,
>
>Shane
>
>--
>'96 IndyRam-HisIndy-MPI/TB/Pulleys/Coil/Wires/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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