89 ram with issues

Discussion in 'Engine & Performance' started by robsnyder225, Oct 29, 2016.

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  1. robsnyder225

    robsnyder225 Junior Member

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    Hello all. New guy here. Just picked up an 89 d150 4x4 last night to use as a farm beater. Truck started out running rough but was drivable then it just completely quit. Thought it was spark issues and its a lot more than that. I have power to the coil and fuel pump with the key shut off. As soon as I flip the key over to start it all power is gone. I know I can put the pump on a toggle switch but can I put the coil on one also. If I'm having these issues is there possibly something else wrong causing all this nonsense? Im in the doghouse big time with the wifey over this because of a $91 tow bill to get it the rest of the way home. I've always had carbed engines without all this electrical stuff on it so I'm not sure where to start. Any help is greatly appreciated.
     
  2. crazzywolfie

    crazzywolfie Senior Member

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    welcome. not seeing power at the coil or fuel pump is normal. you will only see power there for a few seconds after you turn the key on or while cranking. otherwise the computer shuts the asd relay off. can you hear the fuel pump turn on when you first turn the key on? also do you still hear noise under the hood when you turn the key on?
     
  3. robsnyder225

    robsnyder225 Junior Member

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    Fuel pump doesn't kick on at all with the key. But hums with the key off. Not getting any spark from the coil at all. Can I put a toggle to it and give it power. Not sure if I've got a bad coil or not at this point. I know the pump is supposed to run until it builds pressure and then shut off. The wiring is pretty messy and I'm wondering if the box on the fender isn't screwed up too.
     
  4. robsnyder225

    robsnyder225 Junior Member

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    It was making a funny noise when you turned off the key but we drained the battery trying to get it started. The noise only lasted a couple seconds. Just really lost as to why its doing this. I'd like to override the box and see if it will start. What all does that box on the fender control? If I can get it to run without it then that's what I'll do. Just trying to get a handle on it to figure out were to start trouble shooting it. It didn't make any noises under the hood with the key on. I'm hoping its just a dead coil and nothing more but I have a bad feeling about it. And to add to it. I hate wiring!
     
    Last edited: Oct 29, 2016
  5. crazzywolfie

    crazzywolfie Senior Member

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    are you sure the fuel pump hums with the key off and it is not something under the hood? normally the throttle kicker under the hood makes noise when you first turn the key on and a couple seconds after you turn the key off which is what i think you might possibly be hearing.

    the box on the fender controls everything
     
  6. robsnyder225

    robsnyder225 Junior Member

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    Oh its the fuel pump. You dont hear noise under the hood. Its back at the tank. Something is really messed up with for sure.
     
  7. crazzywolfie

    crazzywolfie Senior Member

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    the fuel pump should only run when the key is on. if it runs after you turn the key off then there is something wrong. you can test the asd relay connector to see if it is getting power to terminal 86 with the key in the run position. this is your ignition power wire. you also want to check to see if there is power at terminal 30 which is a constant power wire
    [​IMG]
    [​IMG]
     
  8. robsnyder225

    robsnyder225 Junior Member

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    Where is that relay located? This is the first one of these I've had. I'm just at a loss as to why it did it.
     
  9. crazzywolfie

    crazzywolfie Senior Member

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    it is the only normal sized relay on the drivers side fender. i have had my share of experience playing with these things.
    [​IMG]
     
  10. robsnyder225

    robsnyder225 Junior Member

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    I'll have to look again when I get back home. But I dont think there's even one on the fender that looks like that. The wiring is all messed up and if that's missing it could explain a lot of the problems.
     

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