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Cranks, no start

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  #61  
Old 08-12-2018 | 06:56 PM
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Originally Posted by HeyYou
Just download a factory service manual from here. Wiring diagrams are in section 8W.

Depends on where you are putting your probes for the test light. You WILL see power at various grounds, because some stuff is always on, (always has power) and electricity will take the path of least resistance. So, if you have your clip from the test light on the battery negative terminal, yep, that's the easiest path to ground.
Ok I did the same with the test light but this time I attached it to the air conditioner compressor and then the fender and got the same result. Was going to try the frame but its hard to find a place on the frame under hood where I clip the test light to ground it. Anyway, I was going to start in and sure enough, lightening flashes and thunder rumbles!!! Arghhhhh!! I will try more tomorrow.
 
  #62  
Old 08-12-2018 | 07:06 PM
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Yeah, I don't think you need to test that any further. You have power there, without a doubt. Which ground were you getting it from?

We had a rather LOUD storm roll thru here last night... Unfortunately, it was while I was trying to sleep.... and one of my dogs (Kia....) HATES thunderstorms.... so she isn't sure what she wants to do. When we are in the bedroom, she acts like she wants to go outside, but, offer her the opportunity, and she looks at me like I have lost my mind. (you want me to go OUT THERE??????? Nottafarkingchance.) I ended up just making her lie down with me, and rubbing her belly till she relaxed enough to go to sleep. No. My dogs aren't spoiled. Not at all.....
 
  #63  
Old 08-12-2018 | 09:02 PM
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Originally Posted by HeyYou
Yeah, I don't think you need to test that any further. You have power there, without a doubt. Which ground were you getting it from?

We had a rather LOUD storm roll thru here last night... Unfortunately, it was while I was trying to sleep.... and one of my dogs (Kia....) HATES thunderstorms.... so she isn't sure what she wants to do. When we are in the bedroom, she acts like she wants to go outside, but, offer her the opportunity, and she looks at me like I have lost my mind. (you want me to go OUT THERE??????? Nottafarkingchance.) I ended up just making her lie down with me, and rubbing her belly till she relaxed enough to go to sleep. No. My dogs aren't spoiled. Not at all.....
My little dogs hates then to and gun shots. HHe'l shake like hell and won't leave you alone.
 
  #64  
Old 08-13-2018 | 05:19 PM
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Originally Posted by MoparFanatic21
My little dogs hates then to and gun shots. HHe'l shake like hell and won't leave you alone.
As I'm typing this today, its now raining cats and dogs again and lightning and thundering again! I swear someone up there doesn't want me to get this truck to run. When I used the test light I got power going to the fuse box on both straps from the battery positive and negative. Went even further and test them with a multimeter got 12 volts on both. Like I said electrical is my weak point, but this does not sound normal to me that the black ground strap going into the fuse box would have that kind of voltage.
 
  #65  
Old 08-13-2018 | 05:21 PM
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Originally Posted by HeyYou
Yeah, I don't think you need to test that any further. You have power there, without a doubt. Which ground were you getting it from?

We had a rather LOUD storm roll thru here last night... Unfortunately, it was while I was trying to sleep.... and one of my dogs (Kia....) HATES thunderstorms.... so she isn't sure what she wants to do. When we are in the bedroom, she acts like she wants to go outside, but, offer her the opportunity, and she looks at me like I have lost my mind. (you want me to go OUT THERE??????? Nottafarkingchance.) I ended up just making her lie down with me, and rubbing her belly till she relaxed enough to go to sleep. No. My dogs aren't spoiled. Not at all.....
the ground strap into the fuse box coming from the negative side of the battery
 
  #66  
Old 08-13-2018 | 06:12 PM
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I don't know if that is unusual or not. Would have to test the theory on another truck. There is always SOME power draw though, so, it *seems* like it may not 'bad'......
 
  #67  
Old 08-13-2018 | 08:17 PM
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Originally Posted by HeyYou
I don't know if that is unusual or not. Would have to test the theory on another truck. There is always SOME power draw though, so, it *seems* like it may not 'bad'......
Yeah probably so, but I noticed its reads 12 volts like the positive strap when I measure it with a multimeter
 
  #68  
Old 08-13-2018 | 08:59 PM
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That's where the voltage originates.
 
  #69  
Old 08-16-2018 | 06:15 PM
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Originally Posted by HeyYou
That's where the voltage originates.
OK so I had a little time today and I figured I'd start from the top as they say, "always check the fuses first" which I did again and somehow I must've missed the fact that the fuse for the oxygen sensor is the only one not getting power keys on or off. So I checked it with a test light and found it was grounded. I further did a continuity test on the pin for the sensor that connects to the battery for power, and found it had none. Would this be the cause of a no spark possibly? I figure the oxygen sensor working with the ignition coil, and fuel injectors to provide the ECM with a signal at startup is an issue. I'm assuming that the oxygen sensors not providing any information do to the lack of power prevents the ECM from sending spark signal to the coil. Correct? If so, I'm glad the issue is on the connection between the fuse box and the battery because I was not looking forward to crawling under the truck.
 
  #70  
Old 08-16-2018 | 08:25 PM
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Originally Posted by kman4443
OK so I had a little time today and I figured I'd start from the top as they say, "always check the fuses first" which I did again and somehow I must've missed the fact that the fuse for the oxygen sensor is the only one not getting power keys on or off. So I checked it with a test light and found it was grounded. I further did a continuity test on the pin for the sensor that connects to the battery for power, and found it had none. Would this be the cause of a no spark possibly? I figure the oxygen sensor working with the ignition coil, and fuel injectors to provide the ECM with a signal at startup is an issue. I'm assuming that the oxygen sensors not providing any information do to the lack of power prevents the ECM from sending spark signal to the coil. Correct? If so, I'm glad the issue is on the connection between the fuse box and the battery because I was not looking forward to crawling under the truck.
I don't think, as when you first start the truck the computer doesn't even use the 02 sensors until they warm up. At least that is my understanding of it
 



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