I have a 1999, C280 V6.

What is the voltage across the MAF sensor? Is it 0-5 volts, 5-0 volts, or 0-8 volts.

I am working with a company to design a new MAF that will also use a piggyback controller to the stock ECU so that the air/fuel ratio can be altered along with the ignition timing.

Thanks,

Jeff

Does anyone have any information on this topic?

Put a meter or scope across it and read it. Problem solved.

__________________
I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k

I wouldn't know how to do this as the voltage will change with the air flow.

I was hoping some of the technical people would be able to look up the answer or already know the answer from experience.

Thanks,

Jeff, electrical idiot

Most air mass flow sensors are simple potentiometers. If there are three connections, it is easy to determine what the voltage range will be. Measure the two outside terminals of the pot (not the wiper) and that is the reference voltage voltage number you are looking for. The reference voltage will not change as the sensor changes, only the voltage at the wiper will change.

__________________
I got too many cars!! Insurance eats me alive. Dave

78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k