SD> alternator (was charging problem)

[Neil Emiro]

It would trigger a CEL using the GM alternator.  Sounds like it could be 
either the power module or logic module, although I agree it sounds more 
like a logic module problem.  Only way to easily check would be to swap in 
another module, and try it.


On 12 Apr 2008 at 14:52, Dennis & Sherry wrote:

Would it be possible to use a "one wire" alternator to get around this 
issue?
The Ford or GM alternators are fairly low cost and 100 amp units would 
be an upgrade for a lot of our MOPARs.
Would this cause a check engine light or trigger a limp mode?
Dennis
in Delhi, CA.

>> -----Original Message-----
>>
>> Subject: SD> Charging Problem
>>
>> More Info on the problem. I sent this to Stefan but did not 
>> repost to the list.
>> Voltage Readings:
>>  
>> Car Off: 12.5 - 12.7 VDC
>> Cold Start: 13.7 - 14.2 VDC
>> After one or two minutes when fast idle drops it hangs around 
>> 13.3 for 10 seconds or so then starts dropping.
>> Turn on headlights and voltage drops way down to 11.5 ....
>>  
>> If I remember correctly the Power Module (PM) is handling the 
>> request for charge. However, I think it is actually coming 
>> from the Logic Module (LM) and the PM is serving as the 
>> relaying handler.
>> Can anyone confirm? Once upon a time someone had the LM pin 
>> outs  posted. I used to have a disassembly and port map but 
>> was all lost when my PC  crashed a few years back.
>> Thanks,
>> Mike

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Neil V. Emiro