[DeTomaso] Ignition Coil Connector and Wiring Check

[Will Kooiman]

Another thing to check is fuel pressure.  A plugged fuel line feels like ignition cutout.  It will start cutting out, but once it sits for a few minutes, it will run okay again.

On 7/30/20, 10:55 PM, "DeTomaso on behalf of Craig Campman" <detomaso-bounces at server.detomasolist.com on behalf of ccampman at cox.net> wrote:

       Hello Pantera Experts,

       I have a 1973 that has developed an intermittent shutdown of the
       ignition system while driving. The car would restart after several
       cranking attempts and then run for various amounts of time (30 secs to
       15+ minutes) before quitting again. The problem developed during a 45
       min pleasure drive. I suspected the unilite module in the mallory
       distributor, so changed it to a new one. Started the car, warmed it up,
       and ran it at 3K in the garage. While running at 3000 rpm I felt
       several instances of ignition cutout just like the situation on my
       previous long drive. I now suspect a short from an errant wire, or
       intermittent ignition switch contact, or failing coil or ballast
       resistor. Prior to this recent problem the car ran great for years and
       on longer trips.

       I have disconnected the wiring in the engine compartment and removed
       the coil and ballast resistor. When preparing to disconnect the coil to
       replace it I found jury-rigged connections using tape covered spades to
       connect to the existing connector on the wiring loom. I have attached a
       photo (IMG-9306.jpg) of the previous wiring around the coil. Now that I
       have everything disconnected, I want to put it back together properly
       with good wiring practice. I have ordered the proper mating connector
       to attach to the loom connector.

       I have two questions for the crowd:

       1. Any other suggestions of what else to check related to the
       intermittent cutout of the ignition system while running?

       2. The attached photo (IMG-9633.jpg) of the loom connector shows the
       following existing wiring: a blue w/black tracer wire and a lighter
       blue wire tied together to one side of the connector, and a red wire
       and orange wire tied together on the other side of the connector. Does
       this look correct compared to other 73 pantera ignition connector
       wiring examples?

       I plan to remove and clean the ignition switch, as well as ring out the
       wiring from the steering column to the ignition connector before
       installing a new coil and related wiring in the engine bay.

       Thanks in advance for any feedback.

       Regards,

       Craig

       Vista, CA

       Red 1973 - #5303

       [cid:D291DC6A-038F-4CBE-A011-104D4BDAF61B at san.rr.com]

       [cid:651D6CAC-20D4-44B4-862D-6E871062AD7E at san.rr.com]
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