[DeTomaso] Ignition Coil Connector and Wiring Check

[Craig Campman]

Thanks Will.
I have a pressure gauge at the carb and will watch it during my next test round.

Regards,
Craig

> On Jul 31, 2020, at 5:29 AM, Will Kooiman <will.kooiman at gmail.com> wrote:
> 
> 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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