Quick question. Does anyone know where the coil pack ground grounds to? Also can it prevent your car from starting? Pictures would be greatly appreciated.
Coil pack ground
- Thread starter TooRandom
- Start date
TooRandom;1138950 said:
dont really matter as long that its bolted down to metal.
mine was on the side of the valve cover by the injectors
I don't think it will keep your car from starting. But never the less it should be grounded to the head. As big yoggz stated ground it next to the side of the valve cover by the injectors (between 2 and 3). There is a spot there for it, the bolt head is 12mm that threads into the hole. Just make sure the bolt you use is not a long one or you might crack your head if you bottom it out.. I can not get into my photobucket (at work) so I can not show you a pic. at this time. 
I should have a pic of it in my build thread.
I should have a pic of it in my build thread.
It is bolted to the bolt just in front of my small red vacuum hose, right next to the coil pack cover. I did have one car that would not start without it hooked up. And I have since had 2 that it doesn't matter.
it might!
You have to remember that the high voltage output of the coil is ONE side of the current flow equation (You have your positive but where is your ground/negative?) You have to have a return and that return is the GROUND of the engine or directly to the battery.
edit: bad info.... happens!
You have to remember that the high voltage output of the coil is ONE side of the current flow equation (You have your positive but where is your ground/negative?)
You have to have a return and that return is the GROUND of the engine or directly to the battery.edit: bad info.... happens!
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The coil pack bracket "ground" wire is a Foucault Drain:
http://tinyurl.com/l3z2r
It's there to suppress eddy currents induced into the bracket. It will not prevent the engine from starting. If it does you have other problems. That said if you put a scope on it while disconnected you'll see why it should be hooked up...
http://tinyurl.com/l3z2r
It's there to suppress eddy currents induced into the bracket. It will not prevent the engine from starting. If it does you have other problems. That said if you put a scope on it while disconnected you'll see why it should be hooked up...
How does this apply to the COP setups (eg. the 2jz ge coils)? Are they grounded through their mounting hole (which is metal lined) or since there is no real "bracket" the issue is moot?
COP setup is grounded thru the plug itself. The non COP isnt. Non cop is mounted to the bracket. The bracket needs to be grounded. you can really ground it anywhere on the head. There is a bolt next to the throttle body with a nut on it that mine was on. Right by the fuel rail, between the FPR and the throttle body. Just make sure the point you mount it to is cleaned of paint, rust and oil, and make sure the connection isnt messed up either.
+1 Great. Thanks a lot everyone. Very useful and clear information. Don't think i could get a better answer.
Also if you don't have a ground on your coil pack (torn off) or not grounded will that blow the coil pack(s)?
Sorry if these are what some people would call a "stupid question." i'm still in the process of diagnosing my no start problem with my car.
Also if you don't have a ground on your coil pack (torn off) or not grounded will that blow the coil pack(s)?
Sorry if these are what some people would call a "stupid question." i'm still in the process of diagnosing my no start problem with my car.
No, it will not blow coil packs and it will not prevent the engine from starting. The drain wire has nothing to do with the ignition system's ability to generate spark. It *does not* supply circuit ground for it. That function is provided by the igniter, which must be grounded to the chassis in order to work. Assuming your coil pack bracket still has the rubber isolation bushings the drain should be connected for other reasons though. That's as plain as I can make it.
jetjock;1139985 said:
Agreed but a simple unplug of the old connector and then plugging it back in, he should not have that problem. Unless he somehow shorted out his coils in the process. The origional quesiton was where is the grounding point, at which an answer was given. And grounding the bracket the cop plugs are on is true, its there to help dispurse the electromagnetic field generated by the ignition coils. It wont keep spark from getting to where its needed either. So if his ignitor is grounded, and yet his coils have power, why would they not produce spark? To much resistance in the wire to create enough power? Similar to what is wrong with the starter line, and why it needs to be either rewired, run of a relay, or a push button starter put in? Check for resistance in the wiring between the ignitor, and the coil packs.
