coil pack / ground

[jonk00000]

does my coil pack need to be grounded ??

 

[steve]

does my coil pack need to be grounded ??

The ECU grounds it's side of the primary with the Power Transistor Module when it wants to charge the coil and disconnects the ground to fire it.

Steve

 

[BISHILVR]

does my coil pack need to be grounded ??

As long as all of the plugs are plugged into it, then no. The connector for the coil pack has a ground of its own.

 

[steve]

The connector for the coil pack has a ground of its own.

Which pin might that be?

A 90 coil pack has 4 pins, 1 for 12v, 2 to the PTM, and 1 for the tach gate.
A 91 + coil pack has 3 pins since the tach gate is part of the PTM.

The two pins to the PTM are the "grounds" for the coils.

Steve

 

[DSMunknown]

Which pin might that be?

A 90 coil pack has 4 pins, 1 for 12v, 2 to the PTM, and 1 for the tach gate.
A 91 + coil pack has 3 pins since the tach gate is part of the PTM.

The two pins to the PTM are the "grounds" for the coils.

Steve

Is that a similar setup compared to the 2G turbos? If not, how does it differ?

 

[steve]

Is that a similar setup compared to the 2G turbos?

Yes, The 2G Turbo coils are like the 91+ 1G. Physical mounting is different but the connector and operation are the same.

Steve

 

[BISHILVR]

Which pin might that be?

A 90 coil pack has 4 pins, 1 for 12v, 2 to the PTM, and 1 for the tach gate.
A 91 + coil pack has 3 pins since the tach gate is part of the PTM.

The two pins to the PTM are the "grounds" for the coils.

Steve

I have a degree in electronics and produce my own ignitions and have for awhile now. I know what the original poster was getting at with his question, and that is why I gave him the answer that I gave. I really dont feel that I have to get into intricate electronics that most people would'nt ever understand on here. What he was shooting at was "Can I use my coil packs without having them bolted down to bare metal" and the answer is yes, because they ground in other ways through the connectors.

 

[akdsmer]

I didn't know a step-up transformer was "intricate electronics"?

 

[BISHILVR]

Entire ignition systems can be. Would you care to technically explain how a step up transformer works then? How about a fly back transformer from a crt display, since they are similar. Lol

 

[steve]

Would you care to technically explain how a step up transformer works then? How about a fly back transformer from a crt display, since they are similar.

Would it serve any purpose in this thread? I didn't think so.

What I was objecting to was the fact than somebody is going to come along, read what you posted and expect to find a ground on the connector for the coil. Worse would be for them to add one and not understand why the ignition fuse kept popping.

I had a couple of people this week think that the coil was grounded and the power was what was switched. So for all I know the OP had the same idea.

Steve

 

[BISHILVR]

"I had a couple of people this week think that the coil was grounded and the power was what was switched. So for all I know the OP had the same idea." Gotcha, but I'm pretty sure this one knew what was going on. Good luck

 

[bartels903]

I have a degree in electronics and produce my own ignitions and have for awhile now. I know what the original poster was getting at with his question, and that is why I gave him the answer that I gave. I really dont feel that I have to get into intricate electronics that most people would'nt ever understand on here. What he was shooting at was "Can I use my coil packs without having them bolted down to bare metal" and the answer is yes, because they ground in other ways through the connectors.

So I could bolt up my coil pack anywhere I wanted if all connectors and wires reached?

 

[steve]

So I could bolt up my coil pack anywhere I wanted if all connectors and wires reached?

Sure.

Steve

 

[bartels903]

Probably wouldn't do it, but cool to know.