Mopar electronic ignition issues........troubleshooting
#457993
09/02/09 10:39 PM
09/02/09 10:39 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
OP
master
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OP
master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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I seem to have a problem loosing fire while in start position with the key. If I bump it will hit and run once running it'll never loose it again.
What would cause this?
I seem to have two vehicles with this issue. The other on is a little different as in when I shut the key off it will hit once, but while the key is in the start position I don't have any fire.
Any ideas?
Both stock ignitions.
The coil is hot all the time on both. Both have tach's could this be a problem with the tach.......I wouldn't think so. I did have a tach go bad on my 68 gm car back in the day that wouldn't let the car run........unhooked it and the car ran...........I haven't tried that with either of the trucks that I have.
Thanks.
Moparlee
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Re: Mopar electronic ignition issues........troubleshooting
[Re: Robbins]
#457994
09/02/09 11:02 PM
09/02/09 11:02 PM
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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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I'd take off the brown wire from the starter relay to the starter to(temporarily) disable the starter then check for fire at the yellow "sol" wire to the starter relay and at the "point" of the ECU and at the ballast as you play w the ign sw in "start" & see if you can make it go open. You might pull apart the bulkhead & check it as it's a known trouble spot.
live every 24 hour block of time like it's your last day on earth
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Re: Mopar electronic ignition issues........troubleshoo
[Re: Robbins]
#457995
09/03/09 01:55 AM
09/03/09 01:55 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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If you are saying it won't fire/start while cranking, but starts once you release the key, then the problem is voltage drop through the battery cables / bad ground connection(s). Or a defective ignition switch.
Consider this scenario: The battery ground wire/connection has 0.1 Ohm of resistance. At 10-amps of current flow, that is a 1 Volt drop, so if you measured from the chassis/engine ground to the battery positive terminal, the voltage would read 1-volt less than the actual battery voltage.
When cranking the starter, you might be pulling 70+ Amps or more, this would reduce the voltage at the ignition module/coil by 7 volts!
This is why when you release the key from the start position, it removes the high current load to the starter, and results in nearly full voltage being avilable at the ignition box/module/ignition coil to fire the ignition.
The fix is to have good battery cables and good clean low resistance connections.
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Re: Mopar electronic ignition issues........troubleshooting
[Re: MoparforLife]
#457999
09/05/09 12:57 PM
09/05/09 12:57 PM
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Joined: Aug 2007
Posts: 6,095
Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,095
Valencia, España
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you can check if ballast is defective if when cranking the BRAKE light cluster cames off. If dimms when cranking, ballast works. If brake light cames off, then ballast or a related plug or wire is damaged.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Mopar electronic ignition issues........troubleshooting
[Re: Robbins]
#458002
09/07/09 02:06 PM
09/07/09 02:06 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
OP
master
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OP
master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Ok.........When my RC doesn't fire I can unplug distributer & ground the male prong from the harness side and the coil will fire.....plug it back in and the distributor doesn't do any thing.
Makes me think there is something wrong with the distributer, no?
Where is a good brand to buy when it comes to Mopar's stock electronic components?
Thanks for the help.
Moparlee
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Re: Mopar electronic ignition issues........troubleshooting
[Re: Robbins]
#458003
09/07/09 02:33 PM
09/07/09 02:33 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
OP
master
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OP
master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Anybody ever have good experience with Accel's distributer? Dizzy
Moparlee
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Re: Mopar electronic ignition issues........troubleshooting
[Re: Robbins]
#458004
09/07/09 04:35 PM
09/07/09 04:35 PM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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I have the accel billetproof distrubitor in the coronet R/T and it has worked great. http://www.northernautoparts.com/ProductModelDetail.cfm?ProductModelId=1449$260 for the billet distrubitor, internal electronics, magnetic triggered, adjustable mechanical and vacuum advance, stock style cap. This is an older model, I think the 53000 series distrubitor is the newer version, but it is more expensive. The main change is the 53000 series has the mechanical advance up top so changing the advance is easier.
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Re: Mopar electronic ignition issues........troubleshooting
[Re: 451Mopar]
#458005
09/07/09 09:50 PM
09/07/09 09:50 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
OP
master
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OP
master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Quote:
I have the accel billetproof distrubitor in the coronet R/T and it has worked great.
http://www.northernautoparts.com/ProductModelDetail.cfm?ProductModelId=1449
$260 for the billet distrubitor, internal electronics, magnetic triggered, adjustable mechanical and vacuum advance, stock style cap.
This is an older model, I think the 53000 series distrubitor is the newer version, but it is more expensive. The main change is the 53000 series has the mechanical advance up top so changing the advance is easier.
Does this have the factory plug for plug in play with the factory harness. I like the mechanic advance up top.........my MSD for my 340 in the Valiant is like that. I wonder if the one I posted early has the advance set up like that. I'm trying to get Accel to send me some pictures of the inside of it.
Moparlee
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Re: Mopar electronic ignition issues........troubleshoo
[Re: Robbins]
#458006
09/08/09 01:02 AM
09/08/09 01:02 AM
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Joined: May 2008
Posts: 5,399
Aurora, Colorado
451Mopar
master
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master
Joined: May 2008
Posts: 5,399
Aurora, Colorado
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It is aftermarket 3-wire hookup, one wire to keyed +12 volts, Negative side of coil, and ground. I think it does not use a ballast resistor, so you can bypass the ballast resistor. I just placed a jumper wire between the ballast resistor contacts, and plugged the connectors on to hold the wire, then just connected the distributor +12 to the positive side of the coil. I just grounded the ground wire to the coil bracket hold down bolt, and last wire just goes to the coil negative terminal. It is really simple to wire, and has worked great for me.
The newer version with the advance on top is nice if you change the advance curve often, but it is a more expensive dist. Otherwise it uses the same control module.
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Re: Mopar electronic ignition issues........troubleshoo
[Re: 451Mopar]
#458007
09/08/09 04:09 PM
09/08/09 04:09 PM
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Joined: May 2004
Posts: 4,920
Joplin, MO USA
Robbins
OP
master
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OP
master
Joined: May 2004
Posts: 4,920
Joplin, MO USA
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Ok.........I don't know.............if I'm going to go to the trouble of wiring something else up I might just MSD since I've got one in the 340 already.
Thanks again.
So nobody has a certain brand they think is good when it comes to factory style stuff as in Brain box, ballast heck even a stock dizzy?
Moparlee
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