disable P0300 test
#260
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Join Date: Jun 2010
Location: Franklin, MA
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Hey, I'm new to ecuFlash completely, But I know that i have the transmission harmonics issue throwing the p0300 code and just need to ignore it till I have the money to correct it. I have ecuflash version 1.43.3252, and have copied and pasted the periphery definitions into my rom xml file, however the periphery section does not show when I re-open ecuflash.
My ROM ID is 94170008, which I edited in notepad as in the video, with the . I've tried restarting, adding in the code for versions older than 1.35, and saving as .xml. But no luck..
anyone had this happen, or does anyone have any ideas??
Thanks in advance,
-Steve
My ROM ID is 94170008, which I edited in notepad as in the video, with the . I've tried restarting, adding in the code for versions older than 1.35, and saving as .xml. But no luck..
anyone had this happen, or does anyone have any ideas??
Thanks in advance,
-Steve
#261
Evolving Member
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Join Date: Sep 2006
Location: Las Vegas
Posts: 299
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Hey, I'm new to ecuFlash completely, But I know that i have the transmission harmonics issue throwing the p0300 code and just need to ignore it till I have the money to correct it. I have ecuflash version 1.43.3252, and have copied and pasted the periphery definitions into my rom xml file, however the periphery section does not show when I re-open ecuflash.
My ROM ID is 94170008, which I edited in notepad as in the video, with the . I've tried restarting, adding in the code for versions older than 1.35, and saving as .xml. But no luck..
anyone had this happen, or does anyone have any ideas??
Thanks in advance,
-Steve
My ROM ID is 94170008, which I edited in notepad as in the video, with the . I've tried restarting, adding in the code for versions older than 1.35, and saving as .xml. But no luck..
anyone had this happen, or does anyone have any ideas??
Thanks in advance,
-Steve
#262
Let's see if I find solution here
Here's what i m facing..
Mine is JDM Evo 8 MR running stock ecu. Whenever I swap factory coils with COP, car starts and idles perfectly but right after 5~10 seconds, it throws P0300 (random misfire detection) code and engine shuts off. It doesn't start again till ignition is switched off completely. Once re-started, same thing happens and engine shuts off again.
If I swap back factory coils, car is up running as normal.
Is ecu reading false code or something needs to be fixed or deleted?
Here's what i m facing..
Mine is JDM Evo 8 MR running stock ecu. Whenever I swap factory coils with COP, car starts and idles perfectly but right after 5~10 seconds, it throws P0300 (random misfire detection) code and engine shuts off. It doesn't start again till ignition is switched off completely. Once re-started, same thing happens and engine shuts off again.
If I swap back factory coils, car is up running as normal.
Is ecu reading false code or something needs to be fixed or deleted?
#264
#265
I am running 96260009 in my JDM 8 MR. I am using ECUflash 1.33 version.
ECU throws P0300 code as soon as I go with COP ignition from stock coils. Today I uploaded all this data to disable the test and found out the value is already set to 0001 in periphery2 data.
I think it is already disabled. If yes, how come ECU picks this code on COP?
If not, what values to put to disable it?
Thanks!
ECU throws P0300 code as soon as I go with COP ignition from stock coils. Today I uploaded all this data to disable the test and found out the value is already set to 0001 in periphery2 data.
I think it is already disabled. If yes, how come ECU picks this code on COP?
If not, what values to put to disable it?
Thanks!
Last edited by NaughtyEvo; Jun 14, 2012 at 04:53 AM.
#266
Disabling P0300 should ONLY be done as a temporary measure and ONLY if you're 100% sure it is being thrown by a transmission harmonic...see this post:
https://www.evolutionm.net/forums/8490407-post247.html
For COP issues, you have a genuine misfire, and should not be disabling P0300 test...find and fix the problem.
https://www.evolutionm.net/forums/8490407-post247.html
For COP issues, you have a genuine misfire, and should not be disabling P0300 test...find and fix the problem.
#267
My Evo gets back normal on factory coils. I tried in another Evo 8. It gives same code and shuts off. There is another guy in Malta who has same problem. JDM ECUs DO NOT support COPs. We all are trying to find the reason and cure.