SOURCE: My 1998 dodge ram 2500 will not start. I believe
pound on gas tank an see if it runs if so replace fuel pump
SOURCE: 1991 dodge ram 150 asd relay location
There are 4 relays mounted on Drivers side fender under hood. Near hood hinge area. Counting from the front it should be the second relay. They are not always installed in the correct order. It should also be the smaller relay in size.
SOURCE: 1997 dodge ram won't start. My fuel pump does not
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.
SOURCE: Car runs fine for 5 Sec then loses spark thru ASD
The inertia switch is in the rear of the car most times in the trunk area\
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/sean_54c3a3dc48a7773c
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 idea is to shut off fuel
pressure and the ignition systems when the key is turned off to prevent
fires, dieseling, and other problems.
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, or if the turbo
boost pressure reaches and exceeds the over boost cut-off point, 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.
I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514
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