Re: gettin spark for a second
[Re: mopar muscle7271]
#2233379
01/13/17 07:15 AM
01/13/17 07:15 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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No spark when crankin engine over.only spark is when the key is on and not crankin the engine trying to start. Ok now you say only spark when key is on ? Now is that just one spark when key is turned on and or off or a continuos constant spark as I have seen a bad ECU actually cause a spark that just keeps sparking with the key on and the coil wire held 1/4" away from ground. Or if its just one spark when key is turned on then off then that tells you the coil and wiring is good. And if you jump the starter and crank the eng with the key on and get no spark then it may just be a bad pick-up coil. Because if you get at least one spark when key is turned on then off it tells you the coil will fire when the primary circuit is turned off as it should. That would tell me the ECU is just not getting a signal to turn the coil primary circuit off so the magnetic field will collapse and fire in the coil secondary circuit. This is why I asked the specifics about just what is going on ? Now if you crank the eng by jumping the starter with the key in the on posistion and get spark but get no spark when cranking the eng by the key then thats a different problem in the wiring or the ign switch ign 1 and or ign 2 circuits. Ron
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2233576
01/13/17 04:43 PM
01/13/17 04:43 PM
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Joined: Jul 2013
Posts: 468 las vegas,nv
mopar muscle7271
OP
mopar
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OP
mopar
Joined: Jul 2013
Posts: 468
las vegas,nv
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That comment is he wrote is dumb.theres other responding on tryin to tell me whats wrong.he wants to write something stupid like that.
Last edited by mopar muscle7271; 01/13/17 04:43 PM.
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2233616
01/13/17 05:44 PM
01/13/17 05:44 PM
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Joined: Oct 2006
Posts: 7,371 Iowa
burdar
Owen's Dad
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Owen's Dad
Joined: Oct 2006
Posts: 7,371
Iowa
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Here is how the ignition switch works on your Dart. When you turn the key to "start" the car, power is sent on the brown wire directly to the coil and bypasses the ballast. When the engine starts and you release the key, power drops off of the brown wire and the blue "run" wire powers up. If you don't have any spark while cranking,(start position)then you have a problem with the brown "start" wire. Disconnect the yellow wire at the starter relay so the starter doesn't crank while you test. Then, starting at the ignition switch connector at the base of the steering column, test the brown wire for power when the key is held in the "start" position. You should have power on both sides of the connector. If you have power there, then test both sides of the bulkhead connector. Keep testing the brown wire all the way to the coil. If you don't have power on the brown wire on the ignition switch side of the connector, you have a problem with the ignition switch. On my car, I had some loose connections in the ignition switch connector that I had to fix. I had power on one side of the connector but not the other.
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Re: gettin spark for a second
[Re: burdar]
#2233643
01/13/17 06:36 PM
01/13/17 06:36 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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My apologies brother & I would (likely) be the first one to complain (& I have!) if it happened to me. I would suggest trying my prior tests with it good and hot (jumper on coil neg/drag pickup body half male tip). Gotta work fast as electronic devices cool off very fast (enough to change their functioning) when dealing with heat related issues and a person can always (if it will start), let it run again till it acts up then proceed with testing.
live every 24 hour block of time like it's your last day on earth
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2233777
01/13/17 10:39 PM
01/13/17 10:39 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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with make/break grounding of the coil neg if it (coil wire) sparks in run and crank that tells you the wiring is good to that point and that the coil is OK (at least cold). then with that hooked back up. dragging the male tip of the body half of the pickup zigzag connector across the intake, if the coil wire sparks in run and crank that tells you the wiring further downstream is OK & the ECU is OK (at least cold). All that is left is the pickup (ohm it, hot and cold) and backing up a bit, the ballast can act up when heated & cause an issue in the "run" tests.
live every 24 hour block of time like it's your last day on earth
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2233874
01/14/17 01:44 AM
01/14/17 01:44 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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I turn the key on i have spark.when i crank the key the over to start it,i loose all spark.when i let go of key i have alittle spark again. Not trying to be smart here but this makes no sense. You say................ turn the key on I have spark , when I crank the key over to start it I loose all spark , when I let go of key I have a little spark again. OK you say when I turn key on I have spark ?? Well with the key on and not cranking the eng it wont spark so what are you saying ?? I asked do you mean when the key is turned to run you see one spark or a continuos spark ?? So just what does it do when you turn the key to run ?? You say when I crank the key to start I loose all spark so that tells us no spark while cranking. So turn the key to run and jump the starter and crank the eng and tell us just what it does then ? If still no spark then unplug the dist pick-up and drag the male wire harness connector to ground with the key in run and see if it sparks ? If it sparks like that but no other time then heck you may just have a bad dist pick-up. Have you tested the dist pick-up. Just be sure its good before you start testing the rest of the ign circuits. If you get no spark cranking the eng then crank the eng by jumping the starter with the key in the run position and let us know if it has spark ? Ron
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2233961
01/14/17 12:28 PM
01/14/17 12:28 PM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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correct no spark comin out of the coil wire when crankin the engine over to start. yellow wire pulled off of the starter relay to disable the starter. A helper holding the key to "crank". You under the hood dragging the male tip of the body half of the pickup connector across the intake while holding the secondary coil wire 1/4" from ground. if it sparks the pickup is open or its 2 wire connector is open or the gap is way too far open. then with a jumper wire with alligator clips do the coil test same way (key held to start/starter disabled/coil wire 1/4" away from ground) and tap tap tap the alligator clip to ground. I would clean the ECU bottom side just to confirm a good ground but at this point in time I am leaning toward the ECU but yes I would do the tests.
live every 24 hour block of time like it's your last day on earth
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2234495
01/15/17 04:45 AM
01/15/17 04:45 AM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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Ever check the air gap on the pickup coil in the distributor?
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2256929
02/21/17 12:38 AM
02/21/17 12:38 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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it shouold be producing spark the whole time while im crankin the engine over to run. Correct EDIT whats left is the pickup and an intermittent connection somewhere. I would make up some jumpers with alligator clips/proper as needed connectors & sub em in one circuit at a time to pin it down. keep the battery charged & even better would to elim the pickup then use a spare dist (even a /6 one) to do the triggering to save the starter/keep from running the battery down. I'm assuming the ECU has a good ground since you changed it out & on the wiring only the ECU and the coil need to be fed in ign2 and the 2 wire connector between the pickup and ECU needs continuity as does the 2 wires connecting the coil/ECU for it to fire as long as all of those are correct.
Last edited by RapidRobert; 02/21/17 01:19 AM. Reason: more info/thought
live every 24 hour block of time like it's your last day on earth
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Re: gettin spark for a second
[Re: mopar muscle7271]
#2256994
02/21/17 02:46 AM
02/21/17 02:46 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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soon as i let go of key i have spark again. you mean it kicks out 1 spark when you let off the key (to ign1 run).
live every 24 hour block of time like it's your last day on earth
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