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No power to auto shutdown relay

  #1  
Old 06-03-2019, 08:50 PM
Old-Duckman
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Default No power to auto shutdown relay

Hi All, this is my first post. I have had this vehicle for 2 winters and want to sell it this summer but here is my issue.

95 Dakota SLT, 3.9 V6, automatic transmission, about 120K miles.

Was running fine and one day about a month or so ago I went to start it and it would grind but not start. With a mechanic friend we narrowed it down to no 12 volts at pin 30 of the auto shutdown relay.

I can put a jumper wire on the spade for pin 30, plug the relay back in and go to the positive terminal of the battery with the other end of the jumper and the truck fires right up and seems to run fine. (I didn't drive it that way just started it and let it idle awhile).

I checked for broken wires, bad fusible links, blown fuses and found nothing.

Any ideas what it might be ?

If I can't find anything I will run 12 volts to the wire feeding pin 30 and put a fusible link in that wire but I really would rather find out what is wrong and fix it properly.

TIA
 
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Old 06-03-2019, 09:16 PM
RalphP
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Pin 30 of the ASD, on my 1988 at least, is fed from the ignition switch; that's fed by one of the fusible links (on my 1988, again, there's the splice with 5 fusibles; one goes to a second splice with a white or grey one also, that was the one that feeds my ASD.)

I just went through that due to my Part Throttle Unlock Relay coming apart blowing that fusible link.

OTOH, that also powered my starter relay ... so I kind of doubt, if your truck cranks, it's the fusible link itself. I'd sure check the ignition switch though ...

RwP
 

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