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First if I'm typing this from a cell phone. So forgive the errors please. And I'm going off the info I remember from him and me talking. 

Co worker had a 95 12v auto. He's had in the shop for a few months. 

Od quits. Tech quits. No od. 

They have put new ECM in a few times. 

And have traded every wire that should cause some of the issues.

I told him to check for AC noise on the alternator. And a bad ground. He tells me it's a new alternator. But that doesn't mean much. 

 

Thoughts and suggestions? 

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  • Mopar1973Man
    Mopar1973Man

    Ok 1995 12V is only a PCM there isn't any ECM on those trucks.   OD is just a signal wire for ground. In other words OD is controlled by the PCM which switch on and off the ground wire. The

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  • Owner

Ok 1995 12V is only a PCM there isn't any ECM on those trucks.

 

OD is just a signal wire for ground. In other words OD is controlled by the PCM which switch on and off the ground wire. The 12V supply comes from the transmission relay which provides power to the solenoids in the pan. 

 

Automatic Transmission System (Page 2) wiring map 1999 Dodge Ram

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Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.