Electrical Tech Stuff Regarding the Leading Coil
#1
Senior Member
Thread Starter
iTrader: (1)
Join Date: Oct 2007
Location: Nova Scotia, Canada
Posts: 568
Likes: 0
Received 0 Likes
on
0 Posts
Electrical Tech Stuff Regarding the Leading Coil
Ok, here is the story.
A shop had my car ('88 T2, S5 turbo, Megasquirt) for brake work (which they fucked up but that's a whole other story) and while they had the car it appears as though the flooded the hell out of the engine and therefore they couldn't get it to start. They then took it upon themselves to mess around with stuff in the engine bay trying to get it to start. One of the things they did was add a ground wire to the little black female bullet connector that comes off the leading coil pack... which from my research is something you are NEVER supposed to do. Anyway, the short story is that the coil now had NO resistance when I test with a multimeter and it is not fireing the spark plugs either.
So, what I need is some kind of article or something saying that wire is not supposed to be hooked up to ground and that if it is it can short circut the coil. I searched and found that there is mutiple cases of people hooking this wire to ground and destroying their coil, but if something like a tech article with a warning against this exsists it would be stronger evidence that they caused the coil to short circut.
Please, if you don't know what connector I am talking about or you have nothing constructive to add do not respond in this thread. I am hopeing to get conclusive evidence here that i would possibly be able to present in court.
Thank you
Craig
A shop had my car ('88 T2, S5 turbo, Megasquirt) for brake work (which they fucked up but that's a whole other story) and while they had the car it appears as though the flooded the hell out of the engine and therefore they couldn't get it to start. They then took it upon themselves to mess around with stuff in the engine bay trying to get it to start. One of the things they did was add a ground wire to the little black female bullet connector that comes off the leading coil pack... which from my research is something you are NEVER supposed to do. Anyway, the short story is that the coil now had NO resistance when I test with a multimeter and it is not fireing the spark plugs either.
So, what I need is some kind of article or something saying that wire is not supposed to be hooked up to ground and that if it is it can short circut the coil. I searched and found that there is mutiple cases of people hooking this wire to ground and destroying their coil, but if something like a tech article with a warning against this exsists it would be stronger evidence that they caused the coil to short circut.
Please, if you don't know what connector I am talking about or you have nothing constructive to add do not respond in this thread. I am hopeing to get conclusive evidence here that i would possibly be able to present in court.
Thank you
Craig
#2
Engine, Not Motor
iTrader: (1)
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes
on
91 Posts
Sounds like they fried your leading coil. I can't recall ever seeing an "official" article that says this will fry the coil, but anyone looking at the wiring diagram can clearly tell that if you ground the black connector, you are passing 12V directly through the primary of the coil to ground when the key is set to IGN. It will overheat and open in a short time. The ignitor my also be damaged.
#4
Senior Member
I am getting a light miss at idle so I checked my leading coil pack too....it has no resistance...wtf, the manual say 110-220ohm and it still functions.
I wonder if my Ign amplifier(FC1000) is keeping it running???
I went out to my other 2 fc na's and the coils also have no resistance>>>>>i give up.
My multi meter goes from 1.0 to 0.0 ok
I wonder if my Ign amplifier(FC1000) is keeping it running???
I went out to my other 2 fc na's and the coils also have no resistance>>>>>i give up.
My multi meter goes from 1.0 to 0.0 ok
#5
Wire monkey
Join Date: Nov 2006
Location: Camberley, Surrey, UK
Posts: 74
Likes: 0
Received 0 Likes
on
0 Posts
Where are you making the resistance measurement ?
You need to remove the small plastic cover where the orange and black wires from the igniter go to the coil, and remove one of those connections to get a reliable reading, as the ingiter (or an ignition amp if connected here) will affect the reading.
You need to remove the small plastic cover where the orange and black wires from the igniter go to the coil, and remove one of those connections to get a reliable reading, as the ingiter (or an ignition amp if connected here) will affect the reading.
Thread
Thread Starter
Forum
Replies
Last Post