Re: [Chrysler300] Help: Ignition issues

[Ray Jones <hurst300@xxxxxxxxxxx>]

Hi Brian;
Consider the wiring to be a road map, from "Start" to "Run". you can 
check it forward or backward. If you have a fusable link on the wire 
off the positive Batt. cable, make sure you have 12 volts at the plug 
connector.
Since you know you have no spark at the Spark plug and if you did it 
right, none at the coil wire.  Using a circuit tester (light or meter) 
see if you have voltage at the coil. Then check at the Ballast 
resistor. Should be 12 volts on the Ing. side and 6-7 volts  on the 
dist side.
If you have voltage on the Dist side of the Resistor, then the trouble 
is in the distributer or if it has one, the ground wire in the dist. 
Power in, none out.
If no voltage at the Resistor, then work your way to the Ing. Switch. 
If you've gotten this far, check where the wires go thru the firewall, 
Usually there's a big multi pronged plug with a bolt in the center. 
Unbolt it and wiggle the plug apart. See if there's any corrosion, 
Clean, and using di-electric Grease, pack it  and re-plug it. Go back 
and check voltages (Or just try to start it). If no change, go to the 
Ing. switch. and check the back of it with the test light. Make sure 
you have voltage in and that you have voltage out on the "Run" 
connector. We know that there's voltage out when you turn it to "Start" 
as it will crank over. There's also a wire to the Ing side of the 
resistor that provides 12 volts when you are cranking.

Somewhere in all of this, you may find the problem, Ray


On Aug 11, 2007, at 3:02 PM, brian hagen wrote:

My car was 'down' for about a month and a half and while I was
  waiting for something to be repaired.. i decided to do some other
  work I wanted to do. Of course, now that its all back together, I
  cant get it to start.

  Things I did while It was "down":

  Replaced starter with new small hi-torque starter
  Converted over to Pertronix system
  Replaced coil (only because I broke off one of the posts while
  "unscrewing". Doh!)
  Replaced POS and NEG battery cables (not sure if I did this before it
  was "down" or not, can't remember)

  Everything else is the same in the ignition system. I didn't pull
  the plugs or wires while down. Checked spark plugs wires and then are
  in correct position on distributor.

  The car at first wouldnt start because the battery was dead. So I
  let it charge a bit and tried to start it while hooked up to another
  car. The starter turns, the fan turns, the car cranks... but it
  wouldnt turn over.

  At first I noticed that I had probably wired the coil wrong. So i
  rewired it to the distributor so that the 1 black wire from the
  pertronix system goes to NEG, and the RED wire from the distributor
  goes to + on coil along with the black wire from the ballast
  resistor. (I had the black wire from ballast going to NEG
  accidentally). Still doesn't start.

  So i pulled one of the plugs and held it against the exhaust manifold
  to see if I got spark while cranking.. No spark off of plug held
  against the exhaust manifold.

  I then pulled the distributor/coil wire. No spark there either while
  cranking.

  Now the rest of my car's wiring is original so I wouldnt be surprised
  if something got wiggled to much while doing my work and failed. I
  just not sure where to check next?

  Any ideas of what I can try to diagnose next?

  Thanks in advance for any help you can give!
  Brian
  ..who always seems to have ign issues!

 
   

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