maf sensor direct current or frequency? | Ford Explorer Forums

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maf sensor direct current or frequency?

zpexploder

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Joined
May 11, 2008
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City, State
Kelseyville Ca
Year, Model & Trim Level
'05 XLT V8 2WD HHO & Volo
Does anyone know if the MAF sensor on a 1996 explorer 5.0 is direct current or frequency driven?
 



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I believe its DC cauz most vehicle sensors are DC. There are a few frequency devices but most of these are based on cyclical motions like the axles (solid state / hall-effect sensors). Later GM MAFs are usually the ones that use frequency.
 






Maf sensor enhancers

Do you know if an MAP/ MAF sensor enhancer would work on a 1996 Ford Explorer 5.0. To lean the engine manually?
 












Do you know if an MAP/ MAF sensor enhancer would work on a 1996 Ford Explorer 5.0. To lean the engine manually?
Any tweaks at the MAF typically will not work because the computer is not absolute voltage dependent. It doesnt matter if it sees 6 volts of 10 volts at WOT, it will always compensate and change its "scale" based on the max voltage it receives.
 






I think the ECT sensor is more directly responsible for this change. It's much easier to fine tune. All you would have to do is experiment with the precise resistance to make the engine appear like it's running at a certain temperature.
 






MAF sensor enhancers

I installed HHO and injected it post MAF sensor and vacuum into intake manifold. I wrapped / insulated all three o2 sensors. Do you think this is enough to gain an advantage and better MPG?
 












ECT sensor?

What and where is this ECT you speak of?
 






I think the ECT sensor is more directly responsible for this change. It's much easier to fine tune. All you would have to do is experiment with the precise resistance to make the engine appear like it's running at a certain temperature.

I tried this a few years ago.. I used a POT to modify the Air Intake temp. In theory it was supposed to make the truck think it was warmer so it would lean the mixture (air is less dense when hot)..

I just noticed you said ECT.. thats the engine coolant temp... I don't know how modifying what the computer saw there would help..

~Mark

edit: I forgot to say I never saw any difference in mileage... I think it was because it pulls the timing back some when its hot so you acutally loose a little power
 






ECT sensor

He is refering to the Engine Coolant Temp sensor, but dont know exact location of it, maybe at the water neck/ where the top radiator hose attatches to the engine or on the side of one of the heads
 






Air Intake Temp?

Did altering air intake temp lean the mix? I need to make sure that i am not wasting gasoline as well as HHO. The engine runs much smoother and is quiet. I just hope that altering the o2 sensors and injecting the HHO post MAF sensor will do the trick.
 






I believe its DC cauz most vehicle sensors are DC. There are a few frequency devices but most of these are based on cyclical motions like the axles (solid state / hall-effect sensors). Later GM MAFs are usually the ones that use frequency.
I tune obd1 to current GM vehicles and all thier MAFs are frequency. Nissan is frequency/voltage. Ford is voltage only with a max hard limit of 5v. 5v being pegged!

Do you know if an MAP/ MAF sensor enhancer would work on a 1996 Ford Explorer 5.0. To lean the engine manually?
It will not work, I wouldn't recommend trying to trick the computer.

I think the ECT sensor is more directly responsible for this change. It's much easier to fine tune. All you would have to do is experiment with the precise resistance to make the engine appear like it's running at a certain temperature.
If you make the engine appear as if it is running at a certain temp the computer will compensate with the timing tables and base fuel tables respectively. Along with adaptive learning turned on (stock) you can try to trick the ecu it will respond accordingly. My best educated guess (if it doesn't loose fuel economy and/or power) it would feel real unresponsive. If you look at the tables in the tuning the ecu is real hard to be tricked and can be reactive really quick.

I tried this a few years ago.. I used a POT to modify the Air Intake temp. In theory it was supposed to make the truck think it was warmer so it would lean the mixture (air is less dense when hot)..

I just noticed you said ECT.. thats the engine coolant temp... I don't know how modifying what the computer saw there would help..

~Mark

edit: I forgot to say I never saw any difference in mileage... I think it was because it pulls the timing back some when its hot so you acutally loose a little power
BINGO!
 






Insulate the o2 sensors.

what will the ECU do with the o2 sensors wrapped / insulated?
 






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