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Just had headder put on last week, now I'm getting service charging system in my 05. My guess is from the try6 ngk plugs they installed.
Should I just move to the stock ls7 plug or go with the Tr7?
NGK makes ACDelco plugs. Or at least that's what the NGK rep at the tool/part expo trade show told me. I have had the TR6IX in my LS7 with no issues, and now have the TR7IX (little cooler) and no issues.
I can't say why, how, or anything inbetween. I thought Denso made AC deco plugs for some reason, not NGK? I have no proof of that though, just what someone told me.
I can only say my voltage at idle used to jump all over the place. It would drop to 12V and less, I'd get the charging system error, etc. Installed new battery and new alternator, neither helped. TR6 plugs were in from the supercharger install.
I changed to AC Delco ZR1 plugs (can't recall the part number offhand) and haven't had an issue since. I have logs before and after.. I need to find the screenshots. It's night and day
I can't say 100% sure the plugs were the reason. I removed/reinstalled the alternator when changing some other things, so totally possible I cleaned a wire off or who knows what else.. but to me, it's worth trying other plugs to see if it helps
Even with the radiator fan nearly wide open, HVAC fan wide open, sitting at idle.. voltage is still mid 13's which is better than it ever was previously
It's been great for me. But i have heard the stories where spark plugs were causing the "charging system fault" so of course I'd certainly start there. But of course, get the battery and alternator tested first before you swap the plugs for maybe nothing. If they turn out perfect, then no brainer
Just had headder put on last week, now I'm getting service charging system in my 05. My guess is from the try6 ngk plugs they installed.
Should I just move to the stock ls7 plug or go with the Tr7?
The charging wire from the alternator (back of the altinator under the rubber boot) goes to a terminal on the starter, through a bus bar on the starter, then another wire is bolted to another post on the starter on the other side of the bus bar, that goes to the battery.
Also, on the wire from the alternator to the starter, just before that wire bolts to the starter, there is a in line fuse in the wiring as well.
So bank that the problem is down at the starter from the heat off the headers, and once the problem is corrected, you need to heat shield the starter from the heat being radiated off the headers so the heat does not cause other problems again as well.
Here's some screenshots on mine. Again..can't say 100% it was the plugs, but I don't really know what else could have done it. Same alternator and battery. Weird coincidence that IAT was exactly the same.
Here's some screenshots on mine. Again..can't say 100% it was the plugs, but I don't really know what else could have done it. Same alternator and battery. Weird coincidence that IAT was exactly the same.
AC Delco's, stock GM wires
TR6's, MSD wires
maybe those msd wires. don't hear good things about them at all
True..might have been them. I've still got them. I've thought about swapping those plugs/wires back in one at a time and trying to narrow down what the problem actually was but haven't gotten around to it
True..might have been them. I've still got them. I've thought about swapping those plugs/wires back in one at a time and trying to narrow down what the problem actually was but haven't gotten around to it
Ditto, since the OEM spark plug wires have a higher resistance to them for a reason to begin with (same with the plugs as well).
Bluntly put, the alternator works as only clean as the power back to it on the IG wire to control the voltage regulator to begin with, and with less suppression of the very lower resistance spark plug wires (and may be even plugs), bank that the signal back on the IG wire from the ECM is just a mess now instead
Now back to c6reaperx problem, and that the problem popped it head up after a week, and not from the start, still think that the problem is down at the starter with the heat off the heaters causing the problem in that short amount of time instead.
With luck, it just a loose wire on one of the terminal bolts that is a quick fix, instead of say the starter solenoid back cover heat cracked instead; and has to take the starter down to a starter shop so they can swap out a new starter solenoid on it instead.
Note, GM does not offer just the starter solenoid for the starter, so you have to find a replacement for it that is pretty close to use instead (or replace the entire starter).
I had this issue after I bought the car 4 years back. Used ngk during a tune up and the system was over charging to 18v, doing the same now. Going to order the zr1 plugs and try them.
Headder plug question
