I have an SAFC 2 fuel controller in my 97 2.2L. I have noticed that people with Z24s set the sensor to 05 in and 05 out. I was wondering what the setting should be for my car. Not sure if it should be at 05 in and 05 out or if it should be something else.
Boosted 97 2.2L 5 Speed
Boosted 3.4L soon to come
Again-I am just wondering if anyone knows what the sensor settings should be for the 2.2L LN2.
Boosted 97 2.2L 5 Speed
Boosted 3.4L soon to come
Thanks. I wasn't sure because the only other posts about it are all on the Z24s. So I just wanted to make sure about the 2.2L.
Boosted 97 2.2L 5 Speed
Boosted 3.4L soon to come
I have an 03 cavalier and the 5 in and 5 out throws a code im thinking that its a different setting. I work at an auto shop the in hg in vacuum is about 7 when its on 5 and 5 it should be somewhere around 20 so im gonna experiment but im gonna see if there is a more technical aspect to this so im going to call apex i and see if there is a procedure i can go through to find a better setting. Anyone else throwing codes???? like p0107 map sensor input too low.
*2012 mazdaspeed3*
^ Thats not 7, its .7, and its not measured in inches/hg. That looks correct.
I also get the map sensor low input, there is a possible fix in the "New Boost FAQ" at the top of the page, it is not related to the sensor voltage setting.
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Shifted wrote:^ Thats not 7, its .7, and its not measured in inches/hg. That looks correct.
I also get the map sensor low input, there is a possible fix in the "New Boost FAQ" at the top of the page, it is not related to the sensor voltage setting.
I would rethink what you said i have a snap on modis scanner in my car telling me what my map sensor is saying from the computer. And yes it is measured in in/hg ill take a pic tomorrow and post. Not to start an arguement but i will check out that new boost faq and see what it says. I dont know if your refering to the pic but i wasnt.
*2012 mazdaspeed3*
There are only 3 available scales on the SAFC:
kg/cm3
kPa
mm/hg
If the SAFC is sending .7 (as the scale in the pic says, not 7... there is a decimal point there, the scale is 0 to .9), then you have the wrong sensor type selected.
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the sensor setting is at 5in and 5 out the modis says at idle mind you that there is 7in/hg in the manifold. thats all im saying i want something more towards the setting of 18-20in/hg. And the setting is only about readout the setting in and out is only about voltage not whether it sends mm/hg or kpa or kg/cm3
*2012 mazdaspeed3*
Thats kg/cm2 (kilograms per cubic centimeter)...
btw...
1kg/cm2 = 14.2psi, considering that the scale of a sensor is 14.7psi to 0psi (atmospheric to full vacuum), then you are pulling 735mm/hg, or 28in/hg.
A raw data scanner returns the data in kPa (0kPa to 255kPa scale, PID &10h), if your unit does conversions, then you are good to go, but 98kpa = 735mm/hg, or .98 on a 0 to 100 kpa scale...
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Shifted wrote:Thats kg/cm2 (kilograms per cubic centimeter)...
btw...
1kg/cm2= 14.2psi, considering that the scale of a sensor is 14.7psi to 0psi (atmospheric to full vacuum), then you are pulling 735mm/hg, or 28in/hg.
A raw data scanner returns the data in kPa (0kPa to 255kPa scale, PID &10h), if your unit does conversions, then you are good to go, but 98kpa = 735mm/hg, or .98 on a 0 to 100 kpa scale...
Kg/cm2 is not cubic centimeters cm3 is a cubic unit. cm2 is a square unit.
And just curious what your Pressure monitor says when at 100% throttle. At 5in and 5 out mine says about 11-12 kpa in the manifold and currently theres no boost there.
*2012 mazdaspeed3*
At 100% throttle, it is easy to go into positive atmospheric without any boost... you might ask how...
Well... let me tell you
...
Normal atmospheric pressure is 1 BAR, or 14.7 PSI. The atmospheric pressure changes with weather, altitude, humidity, etc. So, in reality, if you live in a low lying place, your normal atmospheric pressure could be 14.9 PSI. This means that when you open the throttle all the way, and the intake manifold equalizes with the pressure in the outside world, you could actually have positive pressure without boost.
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Shifted wrote:At 100% throttle, it is easy to go into positive atmospheric without any boost... you might ask how...
Well... let me tell you ...
Normal atmospheric pressure is 1 BAR, or 14.7 PSI. The atmospheric pressure changes with weather, altitude, humidity, etc. So, in reality, if you live in a low lying place, your normal atmospheric pressure could be 14.9 PSI. This means that when you open the throttle all the way, and the intake manifold equalizes with the pressure in the outside world, you could actually have positive pressure without boost.
But the barometer on the vehicle will also read what atmospheric pressure is and will compensate for location. So not only will it know your at a low altitude it will take into account where you are and will change the value of the intake manifold pressure value.
Im pretty sure 13 kpa or 1.88psi would not be an accurate difference in atmospheric pressure of where we live.
*2012 mazdaspeed3*
The action of the air getting sucked into the manifold can also create a back flow of air, raising the pressure in the manifold as well. The car doesn't use barometer readings to report back manifold air pressure. The PID definition from the HS-3000 clearly states that any ECU responding to a PID 10 (Mode 1) request should report the intake manifold pressure as an absolute value, not a relative one.
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Well ill submit to your superior knowledge to obd systems. So bottom line there is no fix for the afc2. 5in 5out is correct and no getting rid of that code.
*2012 mazdaspeed3*
