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99 dakota crank/no start

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Old Nov 23, 2024 | 01:12 PM
  #21  
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Originally Posted by HeyYou
ASD is the auto-shutdown relay. It provides power to things like the coil, and injectors. The PCM will engage it at initial key on, along with the fuel pump relay. It will stay on for three seconds, then drop out, until the PCM sees the engine turning, usually from a signal from the crank, or cam position sensors. If it doesn't see that signal, it won't turn 'em back on.

PCM controls the ground side of the relay control circuit. Both fuel pump, and ASD relay's should have constant power on pin 30. 85 and 86 are the control circuit. I *think* 86 is power, with key on, and 85 goes to the PCM. PCM simply switches it to ground to activate the relay.
If i havent said this yet...Thank you for your help with his i do appreciate everything you have helped me with. I am going to continue working on this until i eother figure it out or burn the truck to the ground lol. I will update here as soon as i have some news
 
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Old Nov 25, 2024 | 04:00 PM
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Originally Posted by HeyYou
ASD is the auto-shutdown relay. It provides power to things like the coil, and injectors. The PCM will engage it at initial key on, along with the fuel pump relay. It will stay on for three seconds, then drop out, until the PCM sees the engine turning, usually from a signal from the crank, or cam position sensors. If it doesn't see that signal, it won't turn 'em back on.

PCM controls the ground side of the relay control circuit. Both fuel pump, and ASD relay's should have constant power on pin 30. 85 and 86 are the control circuit. I *think* 86 is power, with key on, and 85 goes to the PCM. PCM simply switches it to ground to activate the relay.
ok so I checked my feed voltage and it's a constant 5V. I went and got an oem crank sensor but nothings changed still got spark at coil but none at plugs and wont start. No codes are popping up or anything like that. I don't know where to go next.
 
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Old Nov 25, 2024 | 06:13 PM
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Originally Posted by Kamm
ok so I checked my feed voltage and it's a constant 5V. I went and got an oem crank sensor but nothings changed still got spark at coil but none at plugs and wont start. No codes are popping up or anything like that. I don't know where to go next.
You replaced the cap and rotor already, right? What about the wires? (if you haven't replaced them yet, that is indeed the next step.
 
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Old Nov 25, 2024 | 09:45 PM
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Originally Posted by HeyYou
You replaced the cap and rotor already, right? What about the wires? (if you haven't replaced them yet, that is indeed the next step.
Yes sir brand new wires are on it. I have a question.....if by some weird chance it jumped time, could that be causing my no spark scenario? I know its a long shot but im racking my brain trying to figure this out. Remember there are no codes popping up anywhere at this point either.
 
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Old Nov 26, 2024 | 01:59 PM
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If you are getting spark from the coil, but not at the plugs, it HAS to be something in between causing the problem...... How are you testing for spark at the plug?
 
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Old Nov 26, 2024 | 07:45 PM
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Originally Posted by HeyYou
If you are getting spark from the coil, but not at the plugs, it HAS to be something in between causing the problem...... How are you testing for spark at the plug?
I am not getting spark out of the distributor cap I checked with an online tester at the coil- good spark coil wire at distributor-good spark, any one of the plug wires at the cap no spark and of course at the end of the wire at the plug np spark. It's like the fifth brand new cap and rotor I've put on as well
 
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Old Nov 27, 2024 | 09:21 AM
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Originally Posted by Kamm
I am not getting spark out of the distributor cap I checked with an online tester at the coil- good spark coil wire at distributor-good spark, any one of the plug wires at the cap no spark and of course at the end of the wire at the plug np spark. It's like the fifth brand new cap and rotor I've put on as well
Ok, that's just weird. If it is coming out of the coil, it HAS to be going somewhere.... After going thru that many cap/rotor changes, I highly doubt you ran into five in a row that were bad..... (if you did, I'd be buying a lottery ticket....) Pull one of your plugs, (one that doesn't seem to be getting spark.) See what it looks like.
 
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Old Nov 27, 2024 | 10:40 AM
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Originally Posted by HeyYou
Ok, that's just weird. If it is coming out of the coil, it HAS to be going somewhere.... After going thru that many cap/rotor changes, I highly doubt you ran into five in a row that were bad..... (if you did, I'd be buying a lottery ticket....) Pull one of your plugs, (one that doesn't seem to be getting spark.) See what it looks like.
funny u mention the lottery I did break even on a $10 scratch off yesterday lol. And the plugs are soaked on gas and look like no spark has ever ran through them. I just ordered a new distributor assembly should be here Friday. I know I'm grasping straws here but I have to try something
 
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Old Nov 27, 2024 | 03:05 PM
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Originally Posted by Kamm
funny u mention the lottery I did break even on a $10 scratch off yesterday lol. And the plugs are soaked on gas and look like no spark has ever ran through them. I just ordered a new distributor assembly should be here Friday. I know I'm grasping straws here but I have to try something
Fouled plugs won't spark. That may be a large part of the problem right there. WHY the plugs are fouling should be your first step. I don't think replacing the distributor is going to make any difference.
 
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Old Dec 20, 2024 | 10:35 AM
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Dealing with a crank/no start issue can be so frustrating! If you have spark at the coil but not at the plugs, it might be worth checking the ignition coil wire and ensuring it’s delivering spark to the distributor. Also, double-check the distributor itself—sometimes a faulty rotor or cap can cause issues, even if they’re new. Another thing to consider is testing the ignition control module, as it could be failing under load. Similarly, troubleshooting can be made efficient in other aspects of life, like meeting new people. Online platforms allow you to connect with multiple people and quickly gauge compatibility without investing too much time upfront. If you’re exploring this, local hook up near me is a convenient way to broaden your social circle and make connections.
 

Last edited by beredis; Dec 26, 2024 at 10:21 AM.
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