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Old 07-31-2013, 09:20 AM   #16
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spark issues


On the fender or firewall is going to be a white resistor....Dodge used those pretty late in the game. Make sure you have 12v on it and after it....and the same 12v on the + side of the coil.

When you have the problem, put your meter on the neg side...this is where an older meter with a needle works better.....as you crank it, you will see the needle jumping...if you have that...the coil and related parts are ok.

Have you checked the primary coil wire?

I have FI on my jeep...I had an intermittent miss...the problem ended up being the primary coil wire...it was open...but the HEI coil put so much voltage that it arch's across...

Pull the wire off...if you see a blue crust on either post...good chance the wire is bad. An ohm meter will confirm.

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Old 08-04-2013, 01:11 PM   #17
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spark issues


Would the distributor cap be a primary cause of this not-firing issue?
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Old 08-09-2013, 05:55 PM   #18
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spark issues


How would I go about installing a new resistor?
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Old 08-09-2013, 06:57 PM   #19
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spark issues


Quote:
Originally Posted by CocayneKille View Post
Would the distributor cap be a primary cause of this not-firing issue?
Could be but I've never seen it.

If you don't know what you're doing to diagnose the problem, you could end up throwing a bunch of money at it and still have a problem. Maybe change every part except the piece of wire which may be loose or partially broke some where.
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Old 08-09-2013, 07:28 PM   #20
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spark issues


Good answer, I should try that, except one problem... I have followed every wire (yes, EVERY WIRE) in the wiring harness from headlights to taillights. There is only ONE bad wire I haven't replaced. It is the little ground wire coming off the negative terminal connection. Is that particular wire the issue?
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Old 08-09-2013, 07:52 PM   #21
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Originally Posted by CocayneKille View Post
Good answer, I should try that, except one problem... I have followed every wire (yes, EVERY WIRE) in the wiring harness from headlights to taillights. There is only ONE bad wire I haven't replaced. It is the little ground wire coming off the negative terminal connection. Is that particular wire the issue?
I didn't say you have a wire problem.
I said changing parts without diagnosing things can cost a lot of money and still might not hit the problem.
The wire I mentioned was just an example of something that it might be after starting to throw parts at it.

Have you gone thru the diagnostic chart that was linked to earlier? Do you own a test light?
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Old 08-09-2013, 08:39 PM   #22
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spark issues


Yes, I understood what you were getting at with that previous post. Yes, I did look through the diagnostic chart. The starter cranks, the spark plugs don't have spark when this problem is occurring. The coil is brand new, so I cannot assume that there is a problem with it. So that leaves the rest of the ignition system: ecm, cap, rotor, resistor.. I'm not sure what else, but yes I have been looking through everything that has been posted on here. Along with brother and somewhat-cousin slightly assisting.
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Old 08-09-2013, 08:44 PM   #23
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I keep posting on here for some guidance, and to help put my mind in different areas that I might not be thinking of without some of your input. Do you know if that particular wire on the negative post could be causing an ignition issue.
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Old 08-10-2013, 06:49 AM   #24
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I had a 71 Chevelle that wouldn't start one day and found the small wire from the negative broken off. I fixed it in the parking lot where I was parked and she started right up. I remembered this let last night. So what that wire did was ground the sheet metal of the car.

So..... take a piece of wire and run it from the negative to the body and see. I'm sure you could have done this by now.

Again, do you own a test light? Because if you don't have the simplest of tools, I don't know how you expect to diagnose you problem.
Also, you need a DVOM for checking the coil.
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Old 08-10-2013, 02:55 PM   #25
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spark issues


I understand that grounding idea, most components (in these older vehicles) have a grounded wire to the body, do you would need to have that ground circuit continuing from the body to the battery. That definitely makes since. In all honesty until right now, I have not had the time to do any of these simpler things in the past 5 to 8 days because I've been continuously working from about 9a.m. to about 1 to 4 the following morning.
I just got small spool of 12gauge wire and I'm going to try replacing that write shortly. Will update with message on here about the outcome.
And to answer your final question that I have regularly forgotten to answer, I do not have any electrical testing equipment of my own anymore, but I do have access to a mechanics setup when he is not actively using the individual tools I'm in need of.
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Old 08-17-2013, 12:44 PM   #26
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Replacing that ground wire did not have any effect on the issue I've been having.
I did try one of the suggestions that my brother made, which was to make sure the cap contact points and the rotor was clean (he said they could have been getting gummed up) when this issue was happening.

I did clean the suggested parts when this issue was occurring, and to my surprise the truck fired right up. To make sure it didn't fire up by chance, the next day this issue occurred and I spent more time cleaning, then it fired right up and haven't had any starting issues since.

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