Actually main question is to sportbiketed, you said you got this issue in the past with the AEM intake and went into limp mode. But did you get codes? if so what were they? the same as mine or different?
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Originally Posted by etkms
(Post 10651706)
The blown fuse doesn't fit to me because I mentioned the car went into limp mode, then after I restarted it a few minutes later it was good for a little then went back into limp mode right when I got on track, Wouldn't it be in limp mode all the time from a blown fuse? and not be ok after a restart?
EDIT: Your car is an '04? Those codes aren't applicable to an '04. You don't even have A/F sensors. You have Oxygen sensors. Is the car tuned? Has the ECM been replaced? Sounds like the ECM is looking for voltage on a pin but isn't seeing it because you don't have that pin connected (because you don't have those sensors). |
Originally Posted by etkms
(Post 10651707)
Actually main question is to sportbiketed, you said you got this issue in the past with the AEM intake and went into limp mode. But did you get codes? if so what were they? the same as mine or different?
Originally Posted by i8acobra
(Post 10651746)
The ECM is seeing 0V. That's what the code means. Either there's an unplugged harness, broken wires or a blown fuse (or short in the ECM or both sensors failed at the same time, both unlikely). The ECM doesn't look for the senors immediately. When it does, the car goes into limp mode.
EDIT: Your car is an '04? Those codes aren't applicable to an '04. You don't even have A/F sensors. You have Oxygen sensors. Is the car tuned? Has the ECM been replaced? Sounds like the ECM is looking for voltage on a pin but isn't seeing it because you don't have that pin connected (because you don't have those sensors). |
Originally Posted by i8acobra
(Post 10651746)
The ECM is seeing 0V. That's what the code means. Either there's an unplugged harness, broken wires or a blown fuse (or short in the ECM or both sensors failed at the same time, both unlikely). The ECM doesn't look for the senors immediately. When it does, the car goes into limp mode.
EDIT: Your car is an '04? Those codes aren't applicable to an '04. You don't even have A/F sensors. You have Oxygen sensors. Is the car tuned? Has the ECM been replaced? Sounds like the ECM is looking for voltage on a pin but isn't seeing it because you don't have that pin connected (because you don't have those sensors). I found these issues, they seem similar to mine and seems it may be MAF related with the same 2 codes... http://www.justanswer.com/nissan/25b...requently.html Here on a titan, but still.... http://www.titantalk.com/forums/tita...271-p1281.html |
If the 04.5 does have wb af sensors like the 05+ do then I guess the code is applicable. Either way I think you should run it dry and see what happens. Surely you can find somewhere to take it to do a WOT pull or two, no?
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I own a 2005 350Z and I recently installed a AEM cold air intake yesterday. Today my car decided to go "Limp Mode" I couldn't get passed 2500 RPM. I got the same exact 2 codes as you. P1271 and P1281. From what I have researched and found out, this is the air fuel ratio. In order to fix this issue from what I have found out you will need to get a tune so that your air fuel ratio isn't completely different. I had my brother sit next to me with the scan tool as I drove and found out my engine was getting way to much air and way to little fuel. So in this coming week I am taking it to a shop to get tuned up and fix this issue and if that doesn't work I'm getting bigger injectors! But hopefully this was helpful because finding your post was helpful to me, I thought I really broke something lol. Thank you and I wish you luck!
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Originally Posted by Greg Facella
(Post 11010600)
I own a 2005 350Z and I recently installed a AEM cold air intake yesterday. Today my car decided to go "Limp Mode" I couldn't get passed 2500 RPM. I got the same exact 2 codes as you. P1271 and P1281. From what I have researched and found out, this is the air fuel ratio. In order to fix this issue from what I have found out you will need to get a tune so that your air fuel ratio isn't completely different. I had my brother sit next to me with the scan tool as I drove and found out my engine was getting way to much air and way to little fuel. So in this coming week I am taking it to a shop to get tuned up and fix this issue and if that doesn't work I'm getting bigger injectors! But hopefully this was helpful because finding your post was helpful to me, I thought I really broke something lol. Thank you and I wish you luck!
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Originally Posted by Greg Facella
(Post 11010600)
I own a 2005 350Z and I recently installed a AEM cold air intake yesterday. Today my car decided to go "Limp Mode" I couldn't get passed 2500 RPM. I got the same exact 2 codes as you. P1271 and P1281. From what I have researched and found out, this is the air fuel ratio. In order to fix this issue from what I have found out you will need to get a tune so that your air fuel ratio isn't completely different. I had my brother sit next to me with the scan tool as I drove and found out my engine was getting way to much air and way to little fuel. So in this coming week I am taking it to a shop to get tuned up and fix this issue and if that doesn't work I'm getting bigger injectors! But hopefully this was helpful because finding your post was helpful to me, I thought I really broke something lol. Thank you and I wish you luck!
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any updates man? this thread was killer.
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