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https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl General Public Area >> For Non-Technicians >> 1994 2.0 20v 850 volvo maf sensor voltages https://yabb.autonerdz.com/cgi/yabb2//YaBB.pl?num=1305579790 Message started by bangshout on May 16^th, 2011 at 1:03pm

Title: 1994 2.0 20v 850 volvo maf sensor voltages
Post by bangshout on May 16^th, 2011 at 1:03pm

Iam working through the various sensors on my trusty 1994 850 2.0 20v Volvo, with my newly acquired oscilloscope, (a 40mhz Hameg) not a pico but there we go.
Can anyone give me the voltages I can expect from the cars maf sensor,and the pin nos for the signal or maybe even a waveform

cheers

Ian

Title: Re: 1994 2.0 20v 850 volvo maf sensor voltages
Post by Mick on May 16^th, 2011 at 3:56pm

Ian

I dont have a wiring diagram in front of me but if you back probe the wires in the connector without puncturing the wires you will get one with about 1 volt at idle and if you snap throttle the trace should rise to at least 4 volts peek.

When you have taken your wave post it here so we can see what you have got.

Mick

Title: Re: 1994 2.0 20v 850 volvo maf sensor voltages
Post by drdiesel1 on May 17^th, 2011 at 12:40am

IIRC it's 4.8 to 4.6 volts peak with 4.5V as the minimum output on a WOT test, with an at idle reading from .8 to 1.2 volts [smiley=ShotGun5.gif]