P0302 please HELP!!! HELP!!!
#1
P0302 please HELP!!! HELP!!!
Hi People.
I need some help with the current situation.
here is my car
2004 RX8 GT with BHR ignition solution.
today on track day, I threw a CEL P0302 at about 7k RPM. The light flashed and stayed on.
Some loss of power under hard pull at more than 6k.
Drove on for another lap before I stopped due a red flag in front of me.
Drove the car home on the highway without problem.
No problem with ideling or any noticeable difference at daily drive.
I didn't try pulling the car hard after that.
What is the most likely problem here??
-ignition?? coils, plugs, wires are about 4 years old.
-compression?? Have never had a compression test
-gas pump?? replaced about 6 years ago due to stupid dealer messing with me.
-Never had problem with MAF or O2 sensor.
-full tank of gas
Never had this problem during daily driving unless i kept on pulling hard in third gear on highway. (so 7k RPM for prolonged time)
do you recommend keep on driving it? or is it an ASAP situation.
Please help. I hope I don't lose compression. I love this car.
I need some help with the current situation.
here is my car
2004 RX8 GT with BHR ignition solution.
today on track day, I threw a CEL P0302 at about 7k RPM. The light flashed and stayed on.
Some loss of power under hard pull at more than 6k.
Drove on for another lap before I stopped due a red flag in front of me.
Drove the car home on the highway without problem.
No problem with ideling or any noticeable difference at daily drive.
I didn't try pulling the car hard after that.
What is the most likely problem here??
-ignition?? coils, plugs, wires are about 4 years old.
-compression?? Have never had a compression test
-gas pump?? replaced about 6 years ago due to stupid dealer messing with me.
-Never had problem with MAF or O2 sensor.
-full tank of gas
Never had this problem during daily driving unless i kept on pulling hard in third gear on highway. (so 7k RPM for prolonged time)
do you recommend keep on driving it? or is it an ASAP situation.
Please help. I hope I don't lose compression. I love this car.
Last edited by terrypk1; 10-25-2014 at 09:34 PM.
#3
A flashing CEL is always a misfire.
Have you gone through this thread? https://www.rx8club.com/series-i-tec...t-here-222280/
Have you gone through this thread? https://www.rx8club.com/series-i-tec...t-here-222280/
But I believe I am not the only one to threw a P0302 on the track.
I would love to hear some input from those who did and what did they do to make it go away.
Thanks
#5
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Do you not believe the thread and want people to repeat the contents of the thread in this one for you with their causes and their solutions? (all of which are in that thread)
#6
Thanks RIWWP.
I am asking about about the front vs rear rotor is because that it could be caused by some damage on my BHR system.
the coil that is the most anterior has a supply wire that goes into it before going out to the plug wire.
That wire was rubbing against my belt and some copper is showing.
Is that the coil responsible for the rear rotor??
I am asking about about the front vs rear rotor is because that it could be caused by some damage on my BHR system.
the coil that is the most anterior has a supply wire that goes into it before going out to the plug wire.
That wire was rubbing against my belt and some copper is showing.
Is that the coil responsible for the rear rotor??
#7
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Yes, that connects to the upper plug on the rear rotor.
And yes, if you have exposed wiring on your coil harness, that definitely needs to be fixed, even if that isn't causing the problem. But it easily could be causing the problem too, so there isn't much point in trying to troubleshoot anything else until you have the wires fixed.
And yes, if you have exposed wiring on your coil harness, that definitely needs to be fixed, even if that isn't causing the problem. But it easily could be causing the problem too, so there isn't much point in trying to troubleshoot anything else until you have the wires fixed.
#8
So I went in and try to remove the wiring on my BHR ignition system.
This is what I found.
So this is the OEM harness correct?? that's damaged...do I now go to mazda and ask them to replace that?
Please RIGHT CLICK on the image and open link in new tab. Thank you
Please help??
What I do next?
This is what I found.
So this is the OEM harness correct?? that's damaged...do I now go to mazda and ask them to replace that?
Please RIGHT CLICK on the image and open link in new tab. Thank you
Please help??
What I do next?
Last edited by terrypk1; 10-29-2014 at 02:58 PM.
#9
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You won't have much luck with Mazda.. They will want to replace the whole engine harness
You have a few choices....you can fix the insulation on the wires by de-pinning the connector and using some waterproof heat shrink...and putting it back together again
You also could wire the BHR connector straight onto the wires...and bypass the OEM connector on that coil
You could also get a pigtail off another harness and solder and heat shrink the new wires to the old wires
I likely would have a plug and long enough wires to do option 3 iff you are going to go that way
Personally I would try the de-pin and heat shrink route if the wires are intact and it's just missing insulation
Make sure you zip tie the wires up and out of the way of the belts when you re-install them
You have a few choices....you can fix the insulation on the wires by de-pinning the connector and using some waterproof heat shrink...and putting it back together again
You also could wire the BHR connector straight onto the wires...and bypass the OEM connector on that coil
You could also get a pigtail off another harness and solder and heat shrink the new wires to the old wires
I likely would have a plug and long enough wires to do option 3 iff you are going to go that way
Personally I would try the de-pin and heat shrink route if the wires are intact and it's just missing insulation
Make sure you zip tie the wires up and out of the way of the belts when you re-install them
#10
Thank you for the input Dan and Charles.
Replacing the whole harness would be crazy (800 USD). I will work on what you said. I hope that solve the misfiring the situation.
Replacing the whole harness would be crazy (800 USD). I will work on what you said. I hope that solve the misfiring the situation.
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