Re: [DML] New RPM relay, still no go.
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Re: [DML] New RPM relay, still no go.



Thanks a lot to both of you for the tips. I will pass this on to him and see 
what he can find out. Yes, the car did run with the RPM relay bypassed.

Brandon

--------------------------------------------------
From: "content22207" <brobertson@xxxxxxxxxxxx>
Sent: Sunday, February 05, 2012 12:20 PM
To: <dmcnews@xxxxxxxxxxxxxxx>
Subject: Re: [DML] New RPM relay, still no go.

> Slight clarification of Martin's post: White/Gray originates at the 
> Ignition ECU (it's a ground that is switched on & off by the ECU), then 
> separates at a soldered junction inside the relay compartment (likely 
> intact) to various devices: coil, RPM relay, idlespeed ECU, and dash tach. 
> Coil is at the end of one of those lines.
>
> Everything depends upon this sentence in your original post: "... He 
> suspected a bad RPM relay as it would work when bypassed with toggle 
> switches...." Do you mean the engine worked (ran) when the RPM relay was 
> bypassed? If so, the distributor pickup and ignition ECU must be OK, 
> otherwise the engine would not run.
>
> Your mechanic should be able to see an ice pick light flash on & off as 
> the engine rotates at the White/Gray wire in RPM relay harness connector, 
> just like the negative side of the coil.
>
> That wire should of course ring out to the coil as well.
>
> If your mechanic can not ring out White/Gray between the RPM relay and the 
> coil, and if the engine in fact runs with the RPM relay bypassed, the 
> break has to be between the soldered junction in the relay compartment and 
> the RPM relay harness connector (about 1 foot apart from each other). 
> Everything between the soldered junction and coil/ignition ECU would have 
> to be intact for the engine to run.
>
> Bill Robertson
> #5939
>
> --- In dmcnews@xxxxxxxxxxxxxxx, "Martin Gutkowski" <martin@...> wrote:
>>
>> The white/grey wire breaks out at the coil, idlespeed ECU, ignition amp 
>> and rpm gauge. However, has he checked the connection from distributor to 
>> the ignition amplifier? If the amp doesn't "see" the signal, it won't 
>> generate a spark signal, this is the source of the signal, not the coil.
>>
>> Martin
>> Sent from my BlackBerry®
>>
>> -----Original Message-----
>> From: "Payne" <bpayne@...>
>> Sender: dmcnews@xxxxxxxxxxxxxxx
>> Date: Mon, 6 Feb 2012 10:18:39
>> To: <dmcnews@xxxxxxxxxxxxxxx>
>> Reply-To: dmcnews@xxxxxxxxxxxxxxx
>> Subject: [DML] New RPM relay, still no go.
>>
>> Greetings,
>>
>> I have a mechanic working on getting my D out of storage and running 
>> again. He suspected a bad RPM relay as it would work when bypassed with 
>> toggle switches. After replacing the relay it still would not work. I 
>> will copy what he wrote to me in the last email.
>>
>> "Unfortunately the relay did not fix the problem. I believe the
>> problem lies in the signal that comes from the coil. In looking though
>> the manual it shows that #1 terminal from the coil goes to the RPM
>> Relay, which is the signal the relay is looking for. When doing a
>> continuity test from the coil to the RPM relay it has a broken signal.
>> The manual is very vague on the routing of this wire but I think it goes
>> through the something else."
>>
>> He is unfamiliar with the DeLorean but seems to be great with European 
>> cars of this era. Is the manual misleading us and is there something else 
>> we should be looking for?
>>
>> Thanks for any help,
>>
>> Brandon.
>>
>> [Non-text portions of this message have been removed]
>>
>>
>>
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>>
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>
>
>
>
> ------------------------------------
>
> To address comments privately to the moderating team, please address:
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>
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>
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>
>
>


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