Coil pack question.

[239]

Is there a metal plate that the coil pack grounds to? Mine just sits on plastic. Just wondering, thanks for any advice.

 

[lobo411]

Is there a metal plate that the coil pack grounds to? Mine just sits on plastic. Just wondering, thanks for any advice.

On my 96, it's attached to a metal plate that bolts onto the exhaust manifold.

 

[Runnin'OnEmpty]

On your 2000, the plastic mount has a metal strap that
surrounds the coil pack and grounds through one of the
mounting bolts.

The coil itself dosen't need to be grounded to operate, but
I suspect the metal strap is there to dissipate the magnetic
field that's formed when the coil fires.

 

[239]

On my 96, it's attached to a metal plate that bolts onto the exhaust manifold.

I took the coil pack off to clean it and it was pretty dirty. Just one question.

The ground plate from the harness is currently in hole #1 as shown in this picture. Shouldn't it be in hole #2 ? It's been in #1 since I've had it. But it looks like #2 has the engine ground plate.

http://i1144.photobucket.com/albums...oads/39207395-F33C-4348-A3CD-7333E5C7ECC9.jpg

 

[lobo411]

I took the coil pack off to clean it and it was pretty dirty. Just one question.

The ground plate from the harness is currently in hole #1 as shown in this picture. Shouldn't it be in hole #2 ? It's been in #1 since I've had it. But it looks like #2 has the engine ground plate.

http://i1144.photobucket.com/albums...oads/39207395-F33C-4348-A3CD-7333E5C7ECC9.jpg

Runnin' on empty probably knows the answer to this better than I do--mine is completely different since it's a 96.

 

[239]

On your 2000, the plastic mount has a metal strap that
surrounds the coil pack and grounds through one of the
mounting bolts.

The coil itself dosen't need to be grounded to operate, but
I suspect the metal strap is there to dissipate the magnetic
field that's formed when the coil fires.

Post #4 above has a link of a picture that I took of the ground plate, if you don't mind looking. I think mine might be grounded wrong.

 

[Runnin'OnEmpty]

It does indeed look like #2 (the rearward bolt) is the one
that's grounded to the manifold. I've had my coils off but
can't remember how they were oriented. It's possible that
a previous owner reversed the metal plate on yours.

If I have time tomorrow I'll remove a coil and report back
how mine is grounded...

 

[239]

It does indeed look like #2 (the rearward bolt) is the one
that's grounded to the manifold. I've had my coils off but
can't remember how they were oriented. It's possible that
a previous owner reversed the metal plate on yours.

If I have time tomorrow I'll remove a coil and report back
how mine is grounded...

Ok, thanks.

 

[Runnin'OnEmpty]

........

The ground plate from the harness is currently in hole #1 as shown in this picture. Shouldn't it be in hole #2 ? It's been in #1 since I've had it. But it looks like #2 has the engine ground plate.

http://i1144.photobucket.com/albums...oads/39207395-F33C-4348-A3CD-7333E5C7ECC9.jpg

I examined mine tonight, and I think what you're referring
to as a 'harness ground plate' is actually the metal base of
the RFI capacitor. The wire from it runs through a plug-in
disconnect and then to the main electrical plug to the coil
pack. If so, then it doesn't matter which bolt it attaches to,
since it's not a ground but simply a mount. (Mine is bolted
to the outside/front bolt, but it really dosen't matter.)

The inside/rear bolt has a grounding strap that runs to a
bolt that attaches the intake plenum to the manifold. This
is where the metal strap surrounding the coil gets it's
connection to ground. (#2 bolt in your pic.) It's important
to have a good clean connection there, to prevent possible
misfires. I remember rubbing a light coating of anti-seize
on the strap to prevent corrosion, since rust tends to form
there for some reason.

Hope this helps.

 

[Flash]

I remember rubbing a light coating of anti-seize
on the strap to prevent corrosion, since rust tends to form
there for some reason.

Electrolysis?

 

[239]

I examined mine tonight, and I think what you're referring
to as a 'harness ground plate' is actually the metal base of
the RFI capacitor. The wire from it runs through a plug-in
disconnect and then to the main electrical plug to the coil
pack. If so, then it doesn't matter which bolt it attaches to,
since it's not a ground but simply a mount. (Mine is bolted
to the outside/front bolt, but it really dosen't matter.)

The inside/rear bolt has a grounding strap that runs to a
bolt that attaches the intake plenum to the manifold. This
is where the metal strap surrounding the coil gets it's
connection to ground. (#2 bolt in your pic.) It's important
to have a good clean connection there, to prevent possible
misfires. I remember rubbing a light coating of anti-seize
on the strap to prevent corrosion, since rust tends to form
there for some reason.

Hope this helps.

Thanks for taking the time to look, it's appreciated. I'll make sure to clean that area.

 

[97-5.0]

I use a big 0 gauge wire between the metal plate And the negative battery terminal, eyelet on both ends