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#1
03-26-2002, 11:29 AM
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How to read OBDII for MAS?
I hooked up a generic OBDII scanner on my car with the check engine light on and a code of p0170. I tried to get a live reading of the MAS. What am I looking for?
I get this reading of 0.60-0.63 at idle and as I add gas , the reading climbs...more I rev the more it climbs. Is this the right reading to diagnose for a faulty MAS? I searched toe forums and have seent hat a 1.25 readind for a MAS is bad. What exaclty is that reading compared to mine?
__________________
1997 Silver AMG C36 OEM Advantegarde Grille OEM Clear Corners W210 Blinking mirrors Eibach/Bilstein Combo Zender Rear Lip Spoiler 
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#3
03-26-2002, 05:55 PM
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I think you are reading the return VOLTAGE from the MAF sensor, at idle & that should be around 1V.
The correction factor(partial load) at 1.25 is the figure that will turn the check engine lamp on.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#4
03-26-2002, 07:33 PM
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Ok..no idea how to use this thing...what exactly am i looking for?
__________________
1997 Silver AMG C36 OEM Advantegarde Grille OEM Clear Corners W210 Blinking mirrors Eibach/Bilstein Combo Zender Rear Lip Spoiler
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