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It won't start. My turn!
#358326
06/26/09 08:48 AM
06/26/09 08:48 AM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Hmm...just my luck! I wire in a kill switch, and now it won't start! The only thing I changed in the engine compartment is that the alternator charge wire no longer goes to the power box but now goes straight to the battery
It has gas, electric pump is running fine, accelerator pumps squirt fuel like normal, I have 11.9 volts at the coil and the orange box...did my coil or orange box freakishly go out the first time I tried to start it after rewiring the battery to have a kill switch?
Engine cranks like normal
Without a helper to turn the key while I check for spark, how can I test the coil or box? I left the key in the on position and unplugged the distributor to jump the wires thinking it would trigger the box to fire the coil, and had the main wire from coil to distributor unplugged and close to a ground to see if it would spark and there was nothing.
I noticed that my coil negative terminal was also reading 11.9 volts...that can't be right, can it?
With the key off, the coil had zero resistance accross it, so that's ok, right?
Where so I go from here?
Vehicle is a 98 Dakota with a carb'd big block, orange box ignition, and an mad blaster coil, no ballast resistor. It's got 3 years and 3500 miles with this set-up and worked fine 4 days ago, I know the orange boxes are known to go out on this set-up, did mine decide to go out right when I changed the main battery run to include a kill switch?
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Re: It won't start. My turn!
[Re: 70Cuda383]
#358327
06/26/09 09:04 AM
06/26/09 09:04 AM
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Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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You might start by unhooking all the wire(s) from the coil neg primary terminal & w key on jump this coil terminal to ground,tap tap tap & see if the coil wire held 1/4" from ground sparks. Check that the coil positive pri terminal and the "point" of the ECU plug in connector get fire when the key is turned to "start". You can unhook the brown solenoid wire at the starter relay to keep the starter from cranking until you get this solved
live every 24 hour block of time like it's your last day on earth
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Re: It won't start. My turn!
[Re: RapidRobert]
#358328
06/26/09 05:16 PM
06/26/09 05:16 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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ok I tried that and the only sparks I got was from the coil negative terminal, nothing from the main lead to the distributor...bad coil?
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Re: It won't start. My turn!
[Re: 70Cuda383]
#358329
06/26/09 06:18 PM
06/26/09 06:18 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
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Posts: 21,345
Marysville, O-H-I-O
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I'm going to have to wait for assistance to check if they have power in "start" position, with the spring loaded key, I can't put it in start and then walk around to check the coil/ignition box.
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Re: It won't start. My turn!
[Re: 70Cuda383]
#358330
06/26/09 06:27 PM
06/26/09 06:27 PM
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Joined: Sep 2005
Posts: 5,117
Haslett, MI
7DRRunner
master
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master
Joined: Sep 2005
Posts: 5,117
Haslett, MI
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checking mine for a bad coil now, interested to hear responses 
"Good luck on your project."
1970 Road Runner
"Accellertii Incredibus"
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Re: It won't start. My turn!
[Re: 70Cuda383]
#358334
06/26/09 08:09 PM
06/26/09 08:09 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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I'm at work right now, and haven't had a chance to do much else....
regardless of if the coil and box get power in "start" vs "run" they are definitly getting power in "run" and since I'm not using a ballast, I see no reason why they wouldn't get power in "start" as well.
However...in "run" when I grounded out the coil negative terminal, shouldn't the coil have sparked out the main wire? It wasn't I was getting sparks from my jumper wire, but nothing out of the coil...
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Re: It won't start. My turn!
[Re: 70Cuda383]
#358335
06/26/09 08:19 PM
06/26/09 08:19 PM
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Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
64Post
master
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master
Joined: Aug 2003
Posts: 8,716
Baltimore/Denver
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Quote:
I'm at work right now, and haven't had a chance to do much else....
regardless of if the coil and box get power in "start" vs "run" they are definitly getting power in "run" and since I'm not using a ballast, I see no reason why they wouldn't get power in "start" as well.
However...in "run" when I grounded out the coil negative terminal, shouldn't the coil have sparked out the main wire? It wasn't I was getting sparks from my jumper wire, but nothing out of the coil...
You had to jinx me... now my junk won't start.  
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Re: It won't start. My turn!
[Re: 64Post]
#358336
06/26/09 08:25 PM
06/26/09 08:25 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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Quote:
Quote:
I'm at work right now, and haven't had a chance to do much else....
regardless of if the coil and box get power in "start" vs "run" they are definitly getting power in "run" and since I'm not using a ballast, I see no reason why they wouldn't get power in "start" as well.
However...in "run" when I grounded out the coil negative terminal, shouldn't the coil have sparked out the main wire? It wasn't I was getting sparks from my jumper wire, but nothing out of the coil...
You had to jinx me... now my junk won't start.
sorry about that!
I really want to replace the coil...I don't know why. but I also can't afford to swap parts if it's not the coil!
Its just REALLY weird how this happened at the same time that I re-wired the trunk mounted battery and the alternator to put in a master kill switch.
of course, the coil is right next to the alternator, and I might have knocked it working on a stuck bolt...which is why I'm suspect of the coil.
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Re: It won't start. My turn!
[Re: aarcuda]
#358341
06/26/09 08:39 PM
06/26/09 08:39 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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ok. instead of tapping the ground then, I'll hold it grounded, and lift to see if it fires the coil then.
if it's supposed to be grounded EXCEPT when the coil fires...then why did my negative terminal have voltage on it? if it's grounded, shouldn't it read zero volts, and then read volts when the ground is removed, and thus firing the coil?
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Re: It won't start. My turn!
[Re: aarcuda]
#358343
06/26/09 08:45 PM
06/26/09 08:45 PM
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Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383
OP
Too Many Posts
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OP
Too Many Posts
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
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man, I really hope it's not the tach! a coil is much cheaper!
I'll try that in the morning, thanks!
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