2jz coils, which terminal is positive/negative?

[pilot]

You took my answer out of context. I was explaining why an old coils can´t be pluged in either way. Your answer is ONLY right for a wasted spark coils pack.


Have you seen an old coil? like those from cars with contact points? Those have one terminal from the secondary connected to one from the primary.

Here you can see:


From here:
http://www.familycar.com/Classroom/ignition.htm

[jonra23]

I have been messing with kettering ignition systems for a while now , would like to see a pic of what you are talking about.

Secondary winding on all systems that I have seen have I teminal being distributor high tension lead and other earth through mount/body.

regards
jon

[pilot]

I have edited my last post. Check the picture.

[jonra23]

Apologies pilot, you are right.

Apologies all for the wrong info that i posted.

regards
jon

[pilot]

No problem

[2jizzle]

Thanks to norbie i gained this diagram.
Had trouble getting it started, had the opolarity of cam sensor wrong.
Have driven it around block couple of times, it misfires as soon as a little load is applied on motor, have replaced plugs and checked timing. It isn't charging and only has about 11 volts while running so am presuming this is causing it. Will try to fix tomorrow.
Cheers for the input and coil lesson.

[Norbie]

As pointed out by Mos, my earlier suggestion that the black-orange wire is a negative is, obviously, incorrect. I saw the B-O wire connected to ground but somehow didn't spot the capacitor (noise filter) it was going through - see bottom-right of diagram above.

The black-orange wire is positive. My bad - sorry.

[2jizzle]

As pointed out by Mos, my earlier suggestion that the black-orange wire is a negative is, obviously, incorrect. I saw the B-O wire connected to ground but somehow didn't spot the capacitor (noise filter) it was going through - see bottom-right of diagram above.

The black-orange wire is positive. My bad - sorry.

Well if thats the case i have wired all coils backwards, this would cause low spark and misfire then! crapo!!

[chris davey]

each coil should have 2 wires and one wire will be the same colour on all of the coils. That wire is the positive one.

That would be the black and orange then.

On a 1j it is black with yellow.

[Norbie]

Well if thats the case i have wired all coils backwards, this would cause low spark and misfire then! crapo!!

Sorry if I created extra work for you. In future I'll let Mos answer all electrical related questions.

[2jizzle]

Sorry if I created extra work for you. In future I'll let Mos answer all electrical related questions.

all good now mate, took me 10 mins to change all terminals in plugs, go's great now, can drive in straifght line in third and come on boost and smoke the bags! just what i wont'd. Thats with over fuel map and timing pulled out, can't wait to get it on the dyno!!