[DeTomaso] Here we go again--need more help

[Pantdino]

Do you have an old coil lying around that you could put in to rule out a bad coil?
I don't know if a coil can fail and still have normal impedances.

Jim






-----Original Message-----
From: SOBill at aol.com
To: chrisvkimball at msn.com; detomaso at realbig.com
Sent: Sat, Dec 18, 2010 5:13 pm
Subject: Re: [DeTomaso] Here we go again--need more help


The MSD is a capacitive discharge ignition which switches around a  200 
olt spike into the coil to fire the plugs. Without special test equipment  you 
an not measure this event.

ave fun  today,
sobill at aol.com  
 
n a message dated 12/18/2010 4:24:49 P.M. Pacific Standard Time,  
hrisvkimball at msn.com writes:

K,  so I take off the 12v constant wire and solder it to the ring clip and 
re-attach it to the same terminal as the solenoid's 12 connection from the 
battery.  While I'm at it, I solder three ground wires, too.
I  start the car.  It turns over about five times as if it were going to  
tart, then it dies and suddenly there is no spark.  I put the timing  light 
n #1 cylinder and tried to start it again to be sure that was the  problem, 
nd it flashed once, than nothing.  The engine kept turning  over, but no 
park.  I tried loosening and tightening a few connections  in case of 
orrosion, but that didn't help.  During one of my subsequent  attempts to start 
the car (while practicing the definition of insanity) the  timing light 
lashed once, but still no sound of electrical life from the  car.
I had my wife crank it while I removed the spark plug wire from  the coil 
nd gently touched it to the coil terminal to see if there were any  sparks 
here, and there was nothing.
I disconnected the coil and  measured the impedance across the two small 
erminals of the coil and it read  almost 0, and across the ground terminal 
nd the main coil output, and that  read about 6 or 7 ohms.  I think those are 
oth normal.
What  should I do next?  The MSD box's little red LED flashed as it should  
hile the car is cranking, and remains on when the ignition is in the on  
osition.
Is there a way I can measure voltage going into the coil from  the MSD box 
o see it the coil is the problem?
I am really at my wits  end here.
Thanks,
(the ever-frustrated) Chris
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