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No.check.engine.light no start

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Old 03-27-2023, 12:02 AM
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Default No.check.engine.light no start

No.check engine light no fuel pump relay working. Relay was getting hot and shutting truck down. Now I have no check engine.light, fuel.pump.relay won't work, have jumped.wirw for pump and turns on have swapped relays, and tested fusable links coming off battery starter turns over, just replaced computer, now I'm stumped cleaned.grounds and.put.new.ends on at ac motor block area. Now I'm stumped
 
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Old 03-27-2023, 06:06 AM
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What year truck?
 
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Old 03-27-2023, 06:43 AM
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Originally Posted by Wizkid69
No.check engine light no fuel pump relay working. Relay was getting hot and shutting truck down. Now I have no check engine.light, fuel.pump.relay won't work, have jumped.wirw for pump and turns on have swapped relays, and tested fusable links coming off battery starter turns over, just replaced computer, now I'm stumped cleaned.grounds and.put.new.ends on at ac motor block area. Now I'm stumped
1993 Dodge ram fuel injected 318
 
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Old 03-28-2023, 06:22 AM
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Your check engine light should come on with key on then go out, This will tell you it's working. Does it do this? Does the asd relay provide power to the coil with key on?
 
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Old 03-28-2023, 07:59 AM
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Originally Posted by Moparite
Your check engine light should come on with key on then go out, This will tell you it's working. Does it do this? Does the asd relay provide power to the coil with key on?
No power seen at coil.wires with assistant turning key on and off and no check engine light.
i used a multimeter I see no volts.
 

Last edited by Wizkid69; 03-28-2023 at 08:02 AM.
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Old 03-28-2023, 09:29 AM
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Verify the PCM is actually getting power.
 
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Old 03-29-2023, 11:57 AM
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i would say if the asd relay was getting hot you likely popped a fusible link or 2. i would start by testing for power at the asd relay.


 



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