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  #11  
Old 03-07-2016, 06:33 PM
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I would guess that you didn't just disconnect the batteries, but removed the wire to the ecm from the positive post as well. check if you laid it aside somewhere. I have made this mistake.
I didn't know that the ECM has it's own separate power wire, I just thought it may have been added over the years. But it does sound like thats the case.
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  #12  
Old 03-08-2016, 02:03 AM
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I hooked everything exactly like I took them off. I took a pic before a disconnected them just for that reason. I did spray some starter fluid it started just on starter fluid but did not respond with fuel!!!! So no I don't have a spare ECM but I have a person that will test it as soon as I take it off. Thanks for the info!!!!
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  #13  
Old 03-09-2016, 01:19 PM
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If it fired with starter fluid, it sounds more like a fuel problem.
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  #14  
Old 03-12-2016, 12:31 AM
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If it fired with starter fluid, it sounds more like a fuel problem.
And what controls the fuel? the ECM?
Coon, IDK your truck, but there may be a small battery powering the ECM memory. The 2 days draw on it may have killed it. Do a search for similar problems. GL
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  #15  
Old 03-12-2016, 03:52 AM
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The ECM tells when to send fuel, if the ECM is bad, it's not communicating that fuel is needed. A truck will fire on Starter Fluid, but won't stay running as soon as the fluid is used up. It needs fuel sent in to keep running, that is where the ECM says "ok, need some fuel here, send it in." If the ECM is bad it won't send fuel. Sometimes you can simply take the ECM off and sniff it where the plug-ins go. Ones that have gone bad can emit a nasty burnt smell that you can sometimes smell without pulling it open.

Now, not to be a jerk off here, the truck does have fuel in it right? It's not sitting on an empty tank is it? We had a truck do that, the driver swore up and down it just shut off. Normally diesel's low on fuel start stuttering and missing and laying down before shutting off unlike modern gasoline engines with fuel injection, they just shut off immediately. He claimed it just shut off out of the blue. We were all kinds of confused then said F it, wonder if it's got fuel in it? Sure enough, it was empty. So make sure your tank has fuel!
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  #16  
Old 03-14-2016, 03:12 AM
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And what controls the fuel? the ECM?
Coon, IDK your truck, but there may be a small battery powering the ECM memory. The 2 days draw on it may have killed it. Do a search for similar problems. GL


You could check the fuel pump. I don't remember if there is a fuse or breaker, but you might check the fuse box.
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  #17  
Old 12-19-2016, 06:52 AM
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What a nice post
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  #18  
Old 12-23-2016, 12:17 PM
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It has been several months since this was originally posted. I would be interested in knowing whether he was able to find the problem and get the truck started.
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  #19  
Old 03-06-2017, 08:38 AM
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thanks for your very knowledgeable information
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