my 84 dodge 318 have no spark agin im on my second coil and got powr to the coil but not out hlep just got the second 1 day a go and it ruan but not to day agin no spark powr to the coil but not out hlep
2007-02-18 23:11:56 · 4 answers · asked by chevrolet_the_big_toy 2 in Cars & Transportation ➔ Car Makes ➔ Dodge
There should be a block on on the fender or firewall that reduces the current from 12 to 6 volt to go to the coil, could be a problem with it. It looks like a ceramic block with a spring streched across it. I have seen them short and put the full 12 volts through, putting too much voltage into the coil will cause the coil to burn out. If you have a voltmeter you may want to check the voltage coming in.
Not guaranteed to be the case, my 318 was in a 72 van, then an 82 ramcharger, 84 might be different, but it can't hurt to check.
2007-02-18 23:20:14 · answer #1 · answered by Anonymous · 1⤊ 0⤋
No, there is no ceramic block on the firewall. I have a 1984 dodge ram as well, but my 318 produces more that 375 hp. The item on the firewall that the other guys was talking about is a voltage regulator. It is very easy to change and very cheap. I would start there. There are 3 or 4 screws, 5/16 if memory serves me right. The item is aluminum and directly behind your distributor. If this doesnt fix the problem, I would say its a ground issue. Follow the negative side of your coil, make sure the wire is intact. How do you know there is no power out, I am sure you have no meter capable of measuring the voltage that is producing. I would also check your distributor, perhaps a new rotor would help. Just mark the cap to the base, and remove it. Look for burned or melted contacts on the inside of cap and rotor.
Best of Luck
2007-02-18 23:54:11 · answer #2 · answered by Tweendasheetz 3 · 0⤊ 0⤋
I think that an '84 is right in that transitional period for Chrysler engines. If your engine is carbureted it's the old system, TBI fuel injection is the newer system.
Seems to me that it's one of two problems. One, if it's the old system I would look for the ballast resistor block and/or the ignition module which is the rectangular box with either 2 or 3 wires and a rubber boot to keep water out. Both the ballast resistor and the ignition module are usually mounted on the firewall. Either of these are fairly inexpensive.
If it's a newer ignition there is a module located in the distributor, it has 3 wires connected to it. the module will be surrounded by a ring with 8 cut-outs, one for each cylinder. In layman's terms if this module is bad the ECM is not picking up a distributor signal, so there will be no voltage sent to the coil to fire the plugs.
Check and see which type of ignition you have. If it turns out that you have the newer type the ignition pickup module is about $40 that will most likely fix the problem.
Lastly if you love your Dodge as much as I do I would suggest that you login to www.dodgetalk.com and register. There are a lot of really knowledgeable people who have dealt with just about every problem you can think of. These guys can help you fix your Dodge yourself and save you a fortune in shop charges.
Good luck
2007-02-19 04:58:51 · answer #3 · answered by mgrenia 3 · 0⤊ 0⤋
I would double check whether you need a ballast resistor in series with the primary winding of your ignition coil. The resistor limits the maximum amount of current that can flow through the coil's primary winding. If your vehicle still had a "points" type ignition system in 1984, then you definitely need a proper ballast resistor.
PS, The resistor is the thing talked about in the answer above.
2007-02-18 23:42:53 · answer #4 · answered by bobweb 7 · 0⤊ 0⤋