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Re: No spark from plug wires,possible problems?? #158811 12/04/08 03:41 PM 12/04/08 03:41 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	it is erratic firing from the coil wire.It sparks when just beginning to crank and when you let go of the key and the sparks are very erratic in between,no distinct pattern.It may spark 3 times a 1 second apart then not spark again for another 4 seconds. I had the ign. coil tested today at two different places and both checked it OK.It is a 73 Charger with electronic ign. I had the ign. control module checked out it also was OK The rotor button is turning. How often is the coil SUPPOSED to fire??Thanks for the replys so far.

Re: No spark from plug wires,possible problems?? #158812 12/04/08 03:53 PM 12/04/08 03:53 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: The rotor button is turning. How often is the coil SUPPOSED to fire??Thanks for the replys so far. It would fire 8 times in (1) revolution of the rotor. Do you have another ECU handy that you could sub in & is your reluctor gap .008" live every 24 hour block of time like it's your last day on earth

Re: No spark from plug wires,possible problems?? #158813 12/04/08 04:09 PM 12/04/08 04:09 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: it is erratic firing from the coil wire.It sparks when just beginning to crank and when you let go of the key and the sparks are very erratic in between,no distinct pattern.It may spark 3 times a 1 second apart then not spark again for another 4 seconds. Should of mentioned this in the first post. Your problem is an erractic spark, might be the coil wire. OR a bad electrical connection. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: No spark from plug wires,possible problems?? [Re: Supercuda] #158814 12/04/08 04:35 PM 12/04/08 04:35 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	or an incorrect reluctor to pickup gap or a bad pick up or a bad coil. whats the voltage at the coil in run

Re: No spark from plug wires,possible problems?? #158815 12/04/08 06:19 PM 12/04/08 06:19 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	4.75v at the + side of the coil with the wires hooked up and key switched to ON I disconnected the wire from the + side and it is 9.9V .Does this seem right??

Re: No spark from plug wires,possible problems?? #158816 12/04/08 06:33 PM 12/04/08 06:33 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	no, its low. it should be around battery voltage when the wire is disconnected. youve got a low battery of a voltage drop somewhere

Re: No spark from plug wires,possible problems?? #158817 12/04/08 06:49 PM 12/04/08 06:49 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	You're battery is good right? you might (1) run 12V fron the batt positive over to the coil positive and( for several seconds only) see if it'll start. (2) w key on you might hold the coil wire(the dist end) 1/4" from ground & jump the coil negative primary terminal to ground & see if you get a spark from the coil wire as you take the jumper off of its ground(repeatedly). live every 24 hour block of time like it's your last day on earth

Re: No spark from plug wires,possible problems?? [Re: RapidRobert] #158818 12/04/08 07:47 PM 12/04/08 07:47 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	12.5V at the battery:As you suggested,I ran a jumper from the battery positive to the coil positive , {12.5V}.With the same results.Sporatic sparks from the coil wire and NO sparking from plug wires.Needless to say,It didnt try to crank. RapidRobert,On the second test,do I need to take the original wire off the negative primary terminal before I put on the jumper wire?

Re: No spark from plug wires,possible problems?? #158819 12/04/08 07:55 PM 12/04/08 07:55 PM
Joined: Jun 2006 Posts: 5,161 CT GTX MATT master
GTX MATT master Joined: Jun 2006 Posts: 5,161 CT	Silly question, but when you are checking for spark at the plugs, are yuo grounding them out to something? Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street

Re: No spark from plug wires,possible problems?? #158820 12/04/08 08:00 PM 12/04/08 08:00 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: RapidRobert,On the second test,do I need to take the original wire off the negative primary terminal before I put on the jumper wire? the transistor is supposed to stop in the "open" position but to keep it simple. yes live every 24 hour block of time like it's your last day on earth

Re: No spark from plug wires,possible problems?? [Re: RapidRobert] #158821 12/04/08 08:32 PM 12/04/08 08:32 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	OK,I took off the original wire off the - side of the coil and hooked a jumper wire to it I took the coil wire off the dist. cap and laid it 1/4 from metal bracket. Turned key to RUN-Tapped other end of jumper wire to ground -creating sparks there at the end of the jumper.. NO sparking at the coil wire So,what does this tell me? Thanks for your help guys..and your patience!!! Yeah,I was grounding the plugs.

Re: No spark from plug wires,possible problems?? #158822 12/04/08 08:50 PM 12/04/08 08:50 PM
Joined: Aug 2003 Posts: 1,145 ontario calif N ns1aar super stock
ns1aar super stock N Joined: Aug 2003 Posts: 1,145 ontario calif	Check the ballast resistor NS1AAR

Re: No spark from plug wires,possible problems?? #158823 12/04/08 08:52 PM 12/04/08 08:52 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	Quote: OK,I took off the original wire off the - side of the coil and hooked a jumper wire to it Thanks for your help guys..and your patience!!! You hooked the jumper wire to the neg side of the coil not to the wire you took off the coil right? (sorry just checking). Allen I have more time than money(by far) & an abundunce of patience which explains why I am on here all the time . If you have a good/charged battery in there then I say bad coil! but one last double check jump 12V to the positive side of the coil & repeat your test of grounding the neg coil terminal & again have a FRESH battery Last edited by RapidRobert; 12/04/08 08:55 PM. live every 24 hour block of time like it's your last day on earth

Re: No spark from plug wires,possible problems?? [Re: RapidRobert] #158824 12/04/08 10:45 PM 12/04/08 10:45 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	yeah,I had the jumper on the neg. terminal I tried it again with both pos. and neg. sides jumped.Still no regular spark from the coil secondary wire

Re: No spark from plug wires,possible problems?? #158825 12/04/08 11:15 PM 12/04/08 11:15 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	your jumping 12V to the coil positive primary & grounding the coil negative primary terminal & pulling it away from ground intermittently & the coil secondary wire held 1/4" from another ground has no spark as you make/break the neg to ground. No spark = a deceased coil Last edited by RapidRobert; 12/05/08 12:13 AM. live every 24 hour block of time like it's your last day on earth

Re: No spark from plug wires,possible problems?? #158826 12/05/08 06:24 PM 12/05/08 06:24 PM
Joined: Oct 2004 Posts: 16,479 Canada CrAzYMoPaRGuY I Live Here
CrAzYMoPaRGuY I Live Here Joined: Oct 2004 Posts: 16,479 Canada	Please tell me it isn't an orange control box you have. If it will TRY to start when you STOP cranking it over, it sounds weird, but try another ECU that you KNOW works. No spark while cranking, let the key go and it TRIES to fire sometimes? Is that it? CrAzYMoPaRGuY

Re: No spark from plug wires,possible problems?? [Re: CrAzYMoPaRGuY] #158827 12/06/08 12:38 PM 12/06/08 12:38 PM
A Anonymous OP Unregistered
Anonymous OP Unregistered A	Yep,It was the coil.Finally got a chance to get one this morning.Its running now.Odd that a few days ago,I took mine off and took it to Oreillys and AutoZone and had it tested and they both said it was OK Thanks RapidRobert and all you guys for the help Allen

Re: No spark from plug wires,possible problems?? #158828 12/06/08 12:43 PM 12/06/08 12:43 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	your welcome & for my contribution it was my pleasure. I can see why it threw you with it testing good & you were getting sparks there for awhile. Holler back when the next problem comes along live every 24 hour block of time like it's your last day on earth

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