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Posted on Jul 01, 2009
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1995 Ram 1500. Just died? No votage to coil, no spark?

Truck ran fine. It just died and would not start. Checked the fuses and relays. Tested for voltage to coil, there is no voltage there. No spark to the plugs? Were does the voltage to the coil come from? Thanks..Vess

1 Answer

Harvey N Tawatao

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  • Dodge Master 3,854 Answers
  • Posted on Jul 01, 2009
Harvey N Tawatao
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The power supplied to the fuel pump, ignition coil, fuel injectors and parts of the power module is controlled by the logic module through the Automatic Shutdown Relay (ASD):
The ASD relay is closed (allowing power to flow through it) when the ignition is first turned on. If the signal from the ignition reference is lost while the engine is running, the logic module cuts power to the ASD, which in turn removes power from the fuel pump,ignition coil, injectors and those parts of the power module.  This causes the engine to shut down.

Failure of the automatic shutdown relay is often shown as inexplicable stalling or refusal to start. The ASD can be triggered by a broken wire or short in another place, e.g. the fuel pump.  Hope this helps, and did you try to retrieve any DTC codes?? Be glad to help friend.

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0helpful
1answer

I have dodge ram 1500 v8 model 2002 no start can you help me

If the spark is getting right.Get the fuel system checked.Its quite possible that fuel pressure is low or fuel pump not starting up right.

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These will help.

Thanks.

3helpful
2answers

1997 dodge ram won't start. My fuel pump does not run and coil won't spark. Iv'e checked fuses and relays and they look fine. Could a bad fuel pump cause the asd to kill power to the coil?

First check any ignition/fuel related fuses. Check to make sure you have 12 volts coming into the pump and coil. If nothing to the fuel pump replace the fuel pump relay - if you do have power to the fuel pump then replace the pump. If nothing is coming to the coil it is either an ignition relay or a wiring issue. If you have 12 volts to the coil but no spark then replace the coil.
Also the fuel pump/relay would not kill the coil.
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No gauges- won't start. 2001 Dodge Ram 1500

It's almost never a pcm. You need to check things like the fuel pressure when this happens. I'd take it to a better shop as alot of tests require special equipment.
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No spark

TRY THE THROTTLE BODY POS SEN AND THE COMP
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1997 dodge 1500 starts fine when cold, won't restart when warm.

No, the coil the is not the problem. I would take the ignition module and have it tested. Even though it may not test bad b/c it is still cold, it is more than likely the problem. Have you checked to see if you are getting spark when the trouble occurs?
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Truck wont start.

yes,you will have to drop the tank to get to the fuel pump. i would check the fuel lines for water deposit as well.
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2000 dodge 1500 truck will not start

spark plugs, fuel filter, fuel pump, battery, starter,?
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1994 Dodge Ram 1500 5.9l Turns over wont start

have you checked the crankshaft sensor? thats what gives it spark to the coil then to the plugs
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