[DeTomaso] Ignition Coil Connector and Wiring Check
Jeff Detrich
jjdetrich at gmail.com
Sat Aug 1 12:00:19 EDT 2020
Many years ago I had a fuel pump that acted the same way. New fuel pump and
problem solved.Took forever to figure out it was the fuel pump.
Jeff
6559
On Fri, Jul 31, 2020 at 7:29 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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>
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-------------- next part --------------
Many years ago I had a fuel pump that acted the same way. New fuel pump
and problem solved.Took forever to figure out it was the fuel pump.
Jeff
6559
On Fri, Jul 31, 2020 at 7:29 AM Will Kooiman
<[1]will.kooiman at gmail.com> wrote:
Another thing to check is fuel pressure.A A plugged fuel line feels
like ignition cutout.A It will start cutting out, but once it sits
for a few minutes, it will run okay again.
i>>?On 7/30/20, 10:55 PM, "DeTomaso on behalf of Craig Campman"
<[2]detomaso-bounces at server.detomasolist.com on behalf of
[3]ccampman at cox.net> wrote:
A A A A Hello Pantera Experts,
A A A A I have a 1973 that has developed an intermittent shutdown
of the
A A A A ignition system while driving. The car would restart
after several
A A A A cranking attempts and then run for various amounts of
time (30 secs to
A A A A 15+ minutes) before quitting again. The problem developed
during a 45
A A A A min pleasure drive. I suspected the unilite module in the
mallory
A A A A distributor, so changed it to a new one. Started the car,
warmed it up,
A A A A and ran it at 3K in the garage. While running at 3000 rpm
I felt
A A A A several instances of ignition cutout just like the
situation on my
A A A A previous long drive. I now suspect a short from an errant
wire, or
A A A A intermittent ignition switch contact, or failing coil or
ballast
A A A A resistor. Prior to this recent problem the car ran great
for years and
A A A A on longer trips.
A A A A I have disconnected the wiring in the engine compartment
and removed
A A A A the coil and ballast resistor. When preparing to
disconnect the coil to
A A A A replace it I found jury-rigged connections using tape
covered spades to
A A A A connect to the existing connector on the wiring loom. I
have attached a
A A A A photo (IMG-9306.jpg) of the previous wiring around the
coil. Now that I
A A A A have everything disconnected, I want to put it back
together properly
A A A A with good wiring practice. I have ordered the proper
mating connector
A A A A to attach to the loom connector.
A A A A I have two questions for the crowd:
A A A A 1. Any other suggestions of what else to check related to
the
A A A A intermittent cutout of the ignition system while running?
A A A A 2. The attached photo (IMG-9633.jpg) of the loom
connector shows the
A A A A following existing wiring: a blue w/black tracer wire and
a lighter
A A A A blue wire tied together to one side of the connector, and
a red wire
A A A A and orange wire tied together on the other side of the
connector. Does
A A A A this look correct compared to other 73 pantera ignition
connector
A A A A wiring examples?
A A A A I plan to remove and clean the ignition switch, as well
as ring out the
A A A A wiring from the steering column to the ignition connector
before
A A A A installing a new coil and related wiring in the engine
bay.
A A A A Thanks in advance for any feedback.
A A A A Regards,
A A A A Craig
A A A A Vista, CA
A A A A Red 1973 - #5303
A A A A [[4]cid:D291DC6A-038F-4CBE-A011-104D4BDAF61B at san.rr.com]
A A A A [[5]cid:651D6CAC-20D4-44B4-862D-6E871062AD7E at san.rr.com]
A A _______________________________________________
A A Detomaso Email List is not managed by POCA
A A Posted emails must not exceed 1.5 Megabytes
A A DeTomaso mailing list
A A [6]DeTomaso at server.detomasolist.com
A A [7]http://server.detomasolist.com/mailman/listinfo/detomaso
A A To manage your subscription (change email address,
unsubscribe, etc.) use the links above.
A A Members who post to this list grant license to the list to
forward any message posted here to all past, current, or future
members of the list. They also grant the list owner permission to
maintain an archive or approve the archiving of list messages.
_______________________________________________
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References
1. mailto:will.kooiman at gmail.com
2. mailto:detomaso-bounces at server.detomasolist.com
3. mailto:ccampman at cox.net
4. mailto:cid%3AD291DC6A-038F-4CBE-A011-104D4BDAF61B at san.rr.com
5. mailto:cid%3A651D6CAC-20D4-44B4-862D-6E871062AD7E at san.rr.com
6. mailto:DeTomaso at server.detomasolist.com
7. http://server.detomasolist.com/mailman/listinfo/detomaso
8. mailto:DeTomaso at server.detomasolist.com
9. http://server.detomasolist.com/mailman/listinfo/detomaso
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