Plymouth Arrow ignition

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G Ray - 06 Jun 2009 17:24 GMT

Greetings All,
I have a 2 liter engine from a 1980 Dodge D50. I'm trying to run it
on an engine stand.
I have run into a problem with the ignition. It appears the
distributor and ignition coil are wired in parallel and not in
series. I have consulted a wiring diagram and confirmed it is
supposed to be wired this way.
The engine was running when we removed it but now I'm not getting
spark.
Can anyone explain how this distributor could be pulsing the current
in the coil, when it is electrically parallel to the coil?

Thanks
Glen

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Bhagat Gurtu - 08 Jun 2009 01:32 GMT

> Greetings All,
> I have a 2 liter engine from a 1980 Dodge D50. I'm trying to run it on
[quoted text clipped - 6 lines]
> Can anyone explain how this distributor could be pulsing the current in
> the coil, when it is electrically parallel to the coil?

Have you ensured that the ECU's rust sensor is working properly? Those
particular ECUs need to be in proximity to a large mass of rusting steel
in order for it to energize the ignition system. You will need to bypass
the rust sensor if you want to run the engine on a bench.

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G Ray - 08 Jun 2009 07:32 GMT

> > Greetings All,
> > I have a 2 liter engine from a 1980 Dodge D50. I'm trying to run it on
[quoted text clipped - 11 lines]
> in order for it to energize the ignition system. You will need to bypass
> the rust sensor if you want to run the engine on a bench.

No I've never heard of a rust sensor. I'm hoping it's not like blinker
fluid or muffler bearings.
Tell me more about the rust sensor. Where is it and what does it look
like? Is it just an open or closed prox switch?

Thanks for your resonse

Glen

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G Ray - 12 Jun 2009 11:21 GMT

> > > Greetings All,
> > > I have a 2 liter engine from a 1980 Dodge D50. I'm trying to run it on
[quoted text clipped - 22 lines]
>
> - Show quoted text -

It appears this year D50 did not use an ECU to control spark. It did
have an ESS unit that had an ESS relay. These components are on the
negative side of the coil. I'm guessing "ESS" stands for "Eectronic
Spark System". I don't know that for certain but that is the
direction I'm going to move for now.

Glen

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MG - 13 Jun 2009 13:57 GMT

>> > > Greetings All,
>> > > I have a 2 liter engine from a 1980 Dodge D50. I'm trying to run it on
[quoted text clipped - 30 lines]
>
>Glen

You'll find a bunch of good Mitsubishi technical folks here.

http://www.4x4wire.com/forums/postlist.php?Cat=&Board=UBB69

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