Drivers side grounds
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On The Tree
Joined: Mar 2008
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Drivers side grounds Hi all,
So I just put a new forged 355 in my t/a and I am trying to crank it for the first time today. I got it to the point where the starter will turn over once or twice but it quickly loses power (even while being charged). I then noticed that the drivers side copper ground wire from my ignition coil was getting hot and literally pulling itself towards my msd ignition coil. I have this wire grounded to the frame with two other grounds. Not quite sure where to go from here, does this copper wire need a separate ground?
I have attached a picture to help explain, the question marks indicate where there is some uncertainty as I have the shared ground location secured as in the picture.
So I just put a new forged 355 in my t/a and I am trying to crank it for the first time today. I got it to the point where the starter will turn over once or twice but it quickly loses power (even while being charged). I then noticed that the drivers side copper ground wire from my ignition coil was getting hot and literally pulling itself towards my msd ignition coil. I have this wire grounded to the frame with two other grounds. Not quite sure where to go from here, does this copper wire need a separate ground?
I have attached a picture to help explain, the question marks indicate where there is some uncertainty as I have the shared ground location secured as in the picture.
Pretty sure it's going to the stock location on the stud. I don't recall right off the bat and I can't go look because it's pouring outside.
If your ground strap is becoming hot, then there's obviously some kind of resistance there. Perhaps the terminals need to be wire-brushed and cleaned up a bit.
If your ground strap is becoming hot, then there's obviously some kind of resistance there. Perhaps the terminals need to be wire-brushed and cleaned up a bit.
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I have the stock 1" braided Strap going from the lower Alt. Bolt to the drivers side Frame Rail, and on the pass. side I have about 1ft of 6ga Cable going from the AC mount on the Block to the Frame Rail where the stock Heater Hoses bolted into. All of it a bare metal to bare metal.
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Verdad Gallardo Thread Starter
On The Tree
Joined: Mar 2008
Posts: 116
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Thread Starter
On The Tree
Joined: Mar 2008
Posts: 116
Likes: 0
TECH Veteran
Joined: Dec 2008
Posts: 4,144
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From: Little Rock, AR
That's why your braided ground is getting hot. It's carrying all the ground potential from the frame to the engine. Get that ground on there.
http://shbox.com/1/battery_cable_ground.jpg
Thread Starter
On The Tree
Joined: Mar 2008
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Where is your main battery cable ground that is supposed to go to the stud on the motor mount (where you have your PCM ground, instead)?
That's why your braided ground is getting hot. It's carrying all the ground potential from the frame to the engine. Get that ground on there.
http://shbox.com/1/battery_cable_ground.jpg
That's why your braided ground is getting hot. It's carrying all the ground potential from the frame to the engine. Get that ground on there.
http://shbox.com/1/battery_cable_ground.jpg
I saw that on my car just before your post, I had the battery power cables run all funky and I didn't even notice I was missing the ground! It looks like I will have to switch the two lower motor mount bracket bolts because I have the stud on the back and it looks like it should be on the front.