MAF sensor
#16
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hey guys, sorry for the delayed post but i finally got to do the whole thing again last saturday night and this time i did it right. I really thought i had nailed it this time but today coming from school, the freaking light turned on again. I'm really getting annoyed and my other concern is that i have to take my car to the dmv for inspection in december. is there an alternate way to fix this? Don't know if you guys have heard of the "anti fouler"?
http://www.autotube.net/
could this item be something worth trying?
http://www.autotube.net/
could this item be something worth trying?
#17
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hey check your O-ring on your mas air flow sensor...when i put my RRM CAI on my check engine light came on as well. i noticed that the O ring that allows for a perfect seal on the mas air flow sensor was really weak. it is supposed to fit snug and mine was loose haha i ordered the O ring fom mitsubishi it was like 2.38 pretty cheap. anyway check the seal on your mas air flow sensor it could be bad
#18
I'm trying to spread this message around
Ok so I had the same problem and like others mentioned RRM is in SoCal so the programing maps for the piggyback are set for that area. But your car's computer uses 2 different fuel maps from the factory. It has its base programing which is only going to function properly with stock components but fortunately is only used BEFORE the O2 sensor is at operating temps. O2 sensors don't even function until 600 degrees F. Now keep in mind this very important fact; This is an O2 sensor not a C8H18 sensor. Meaning it doesn't read fuel, it reads oxygen. If you aren't burning the fuel then your O2 is going to be high and your computer will read that as lean (p0171) when there isn't anything wrong with the AFR you just aren't burning the fuel. This also explains why some people (myself included) also get a "random multiple misfire" code.
The solution that I've found for my car was to regap the spark plugs. NOT TO THE FACTORY SETTING. The factor setting for the 4G69 spark plug gap is .028"-.031". This is not a hot enough spark to burn all of the fuel/air you've got. You've actually lowered the resistance of the combustion chamber and you don't get a hot enough spark.
Regap your spark plugs to the 2.0L settings of .039"-.043" (1mm-1.1mm) This will provide a hotter spark and more complete combustion. And more importantly, if you live somewhere with OBD-II vehicle inspections, no check engine light.
But it is very important to make sure you don't have any leaks in the intake system, and that the MAF is clean just in case. DO NOT USE BRAKE CLEANER TO CLEAN YOUR MAF! Use an actual MAF sensor cleaner available at Kragens/Advance/AutoZone/O'Reilleys whatever you've got in your area.
As you regap your plugs unplug the battery and reset your leaner fuel trim. Then just drive around for a bit keeping it under 3k RPM for about a half hour city drive and you should be fine.
Let me know!
The solution that I've found for my car was to regap the spark plugs. NOT TO THE FACTORY SETTING. The factor setting for the 4G69 spark plug gap is .028"-.031". This is not a hot enough spark to burn all of the fuel/air you've got. You've actually lowered the resistance of the combustion chamber and you don't get a hot enough spark.
Regap your spark plugs to the 2.0L settings of .039"-.043" (1mm-1.1mm) This will provide a hotter spark and more complete combustion. And more importantly, if you live somewhere with OBD-II vehicle inspections, no check engine light.
But it is very important to make sure you don't have any leaks in the intake system, and that the MAF is clean just in case. DO NOT USE BRAKE CLEANER TO CLEAN YOUR MAF! Use an actual MAF sensor cleaner available at Kragens/Advance/AutoZone/O'Reilleys whatever you've got in your area.
As you regap your plugs unplug the battery and reset your leaner fuel trim. Then just drive around for a bit keeping it under 3k RPM for about a half hour city drive and you should be fine.
Let me know!
#20
Ok so I had the same problem and like others mentioned RRM is in SoCal so the programing maps for the piggyback are set for that area. But your car's computer uses 2 different fuel maps from the factory. It has its base programing which is only going to function properly with stock components but fortunately is only used BEFORE the O2 sensor is at operating temps. O2 sensors don't even function until 600 degrees F. Now keep in mind this very important fact; This is an O2 sensor not a C8H18 sensor. Meaning it doesn't read fuel, it reads oxygen. If you aren't burning the fuel then your O2 is going to be high and your computer will read that as lean (p0171) when there isn't anything wrong with the AFR you just aren't burning the fuel. This also explains why some people (myself included) also get a "random multiple misfire" code.
The solution that I've found for my car was to regap the spark plugs. NOT TO THE FACTORY SETTING. The factor setting for the 4G69 spark plug gap is .028"-.031". This is not a hot enough spark to burn all of the fuel/air you've got. You've actually lowered the resistance of the combustion chamber and you don't get a hot enough spark.
Regap your spark plugs to the 2.0L settings of .039"-.043" (1mm-1.1mm) This will provide a hotter spark and more complete combustion. And more importantly, if you live somewhere with OBD-II vehicle inspections, no check engine light.
But it is very important to make sure you don't have any leaks in the intake system, and that the MAF is clean just in case. DO NOT USE BRAKE CLEANER TO CLEAN YOUR MAF! Use an actual MAF sensor cleaner available at Kragens/Advance/AutoZone/O'Reilleys whatever you've got in your area.
As you regap your plugs unplug the battery and reset your leaner fuel trim. Then just drive around for a bit keeping it under 3k RPM for about a half hour city drive and you should be fine.
Let me know!
The solution that I've found for my car was to regap the spark plugs. NOT TO THE FACTORY SETTING. The factor setting for the 4G69 spark plug gap is .028"-.031". This is not a hot enough spark to burn all of the fuel/air you've got. You've actually lowered the resistance of the combustion chamber and you don't get a hot enough spark.
Regap your spark plugs to the 2.0L settings of .039"-.043" (1mm-1.1mm) This will provide a hotter spark and more complete combustion. And more importantly, if you live somewhere with OBD-II vehicle inspections, no check engine light.
But it is very important to make sure you don't have any leaks in the intake system, and that the MAF is clean just in case. DO NOT USE BRAKE CLEANER TO CLEAN YOUR MAF! Use an actual MAF sensor cleaner available at Kragens/Advance/AutoZone/O'Reilleys whatever you've got in your area.
As you regap your plugs unplug the battery and reset your leaner fuel trim. Then just drive around for a bit keeping it under 3k RPM for about a half hour city drive and you should be fine.
Let me know!
Last edited by 06 ralli///art; Jan 7, 2015 at 12:04 PM.
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