Blew Ignition Coil, ECU - Could it be my Emanage?
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Joined: Nov 2002
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From: Canada
Richs rq,
I will try to get a hold of my tuner next week and ask about what version of firmware I am running, and what the current version is, and what's involved in upgrading it.
Will let you know what I come up with.
I hope we can help each other solve this annoyance...
I will try to get a hold of my tuner next week and ask about what version of firmware I am running, and what the current version is, and what's involved in upgrading it.
Will let you know what I come up with.
I hope we can help each other solve this annoyance...
The firmware upgrade is put into the eManage with the support tool. The download is here: http://www.mohdparts.com/emanage/pc/....39/index.html
Originally Posted by richsrq
Unfortunately yes. I live in florida and it is getting pretty hot out lately. I opened it up a little in 2nd gear and then I got the CEL light ( random misfire) and then a day later I lost coil #4. I put a new coil on and drove it easy for a week and then got on it yesterday and a little later lost #4 again. Replaced the coil again and was driving around today got on it a couple of times again, soon after I lost the coil again. I think with no heavy load that it might be fine to drive around on but when I am in full load something is happening. I am going to put the 4th coil on and will try to baby it and see what happens. Rich
As another member suggested, I would check your diodes with a volt meter, and double check all of your wiring. Maybe there is a bare of exposed wire to the number 4 coil. Hope that helps.
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From: Canada
When so far so good...They replaced the ECU and coil, and I've put about 600mi on it.
What I am concerned about now is that my collant temperature has been rising to just short of the high threshold....worried that the intercooler blocking the rad is causing me to overheat in traffic....I think my main belt may be a little loose - slippage may be under-driving the water pump maybe??? Dunno....
What I am concerned about now is that my collant temperature has been rising to just short of the high threshold....worried that the intercooler blocking the rad is causing me to overheat in traffic....I think my main belt may be a little loose - slippage may be under-driving the water pump maybe??? Dunno....
Originally Posted by richsrq
Luanda, Is your car still doing fine? I have gone through 4 coils. What dealership did you take your car to?
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From: Canada
Bit of an update
Well, I sprung another CEL yesterday....brought it back to the dealer.....they combed all the wiring and found some wire threads poking through the shrinkwrap where my installer soldered in my Emanage... they re-soldered it and wrapped it.
Is running fine now....they think that may have contributed to my blown coil....
My 2 cents.....Double, no....Triple-Check your connections to/from your Emanage if you are having coil problems.
Well, I sprung another CEL yesterday....brought it back to the dealer.....they combed all the wiring and found some wire threads poking through the shrinkwrap where my installer soldered in my Emanage... they re-soldered it and wrapped it.
Is running fine now....they think that may have contributed to my blown coil....
My 2 cents.....Double, no....Triple-Check your connections to/from your Emanage if you are having coil problems.
I rewraped my wires from my e-manage and everything has been fine since last weekend. I was going to leave an update in a couple more days when I felt everything was great. I do not have any more of the random multiple misfire anymore. Rich 
Originally Posted by richsrq
I rewraped my wires from my e-manage and everything has been fine since last weekend. I was going to leave an update in a couple more days when I felt everything was great. I do not have any more of the random multiple misfire anymore. Rich
Good to hear it was just a simple wiring issue. With so many of using the Greddy timing harness without incident, its good to know new issues arent popping up.
Originally Posted by IceY2K1Max
Has anyone withOUT diodes blown a coil with the v1.36 or later firmware update that supposedly fixed this not going completely to ground issue?
I'd like to know too, as it would simplfly the install of the harness, if it can be done without diodes.
I just installed my ignition harness, I had some diodes sitting around, they are rated at 1 amp i think they were pn4001 or something like that. Am I ok with those diodes or is everyone using something else ?
Originally Posted by IceY2K1Max
Has anyone withOUT diodes blown a coil with the v1.36 or later firmware update that supposedly fixed this not going completely to ground issue?
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From: GARDEN GROVE, CA
The important spec is the Vf (forward voltage drop). The amp rating of the diodes is not important in this application.
Normally, a high Vf is considered a shortcoming, but we are exploiting it to drop the emanage output voltage.
http://www.fairchildsemi.com/ds/1N/1N4002.pdf
http://www.fairchildsemi.com/ds/1N/1N5400.pdf
The Vf graph shows that the 1N4002 series would be a better choice, since it has a higher Vf at the minimal current coming out of the emanage.
Normally, a high Vf is considered a shortcoming, but we are exploiting it to drop the emanage output voltage.
http://www.fairchildsemi.com/ds/1N/1N4002.pdf
http://www.fairchildsemi.com/ds/1N/1N5400.pdf
The Vf graph shows that the 1N4002 series would be a better choice, since it has a higher Vf at the minimal current coming out of the emanage.
Originally Posted by luanda
Hey Sharif,
The new premium emanage unit that you are just getting in....is Greddy endorsing the use of the ignition harness with that unit for the 350z??
The new premium emanage unit that you are just getting in....is Greddy endorsing the use of the ignition harness with that unit for the 350z??
They arent endorsing it yet. I am not sure if they ever will, as their R&D machine turns very slowly. I might order up an extra set of coils, for backup, and then test without the diodes.
We'll have to see. If you have an eManage already installed with timing harness and diodes, you can leave it in place with the eManage Ultimate.
Originally Posted by John at J&S
The important spec is the Vf (forward voltage drop). The amp rating of the diodes is not important in this application.
Normally, a high Vf is considered a shortcoming, but we are exploiting it to drop the emanage output voltage.
http://www.fairchildsemi.com/ds/1N/1N4002.pdf
http://www.fairchildsemi.com/ds/1N/1N5400.pdf
The Vf graph shows that the 1N4002 series would be a better choice, since it has a higher Vf at the minimal current coming out of the emanage.
Normally, a high Vf is considered a shortcoming, but we are exploiting it to drop the emanage output voltage.
http://www.fairchildsemi.com/ds/1N/1N4002.pdf
http://www.fairchildsemi.com/ds/1N/1N5400.pdf
The Vf graph shows that the 1N4002 series would be a better choice, since it has a higher Vf at the minimal current coming out of the emanage.
