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Ecm is driving me nuts....

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Old Jan 19, 2021 | 04:04 PM
  #31  
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LOL

... didn't I mention something like that?

"Also look out for repairs, additions of stuff to some "hot under key ON" - we have seen some weird and hilarious stuff over the years."

One more to add to the collection of haywire fixes.


Possible. The trouble with these "half assed" fixes ist that they are running completely uncontrolled. The circuitry on these trucks is quite complex with several inter-dependencies which are switched. I would not be surprised if indeed such a power robbing could cause that fuse to blow.
I would suggest to go after that transmission power problem the same way as you did with the Fuse B. May find the issue for the transmission and the ECM fuse.
 
Old Jan 19, 2021 | 04:36 PM
  #32  
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Originally Posted by error_401
LOL

... didn't I mention something like that?

"Also look out for repairs, additions of stuff to some "hot under key ON" - we have seen some weird and hilarious stuff over the years."

One more to add to the collection of haywire fixes.


Possible. The trouble with these "half assed" fixes ist that they are running completely uncontrolled. The circuitry on these trucks is quite complex with several inter-dependencies which are switched. I would not be surprised if indeed such a power robbing could cause that fuse to blow.
I would suggest to go after that transmission power problem the same way as you did with the Fuse B. May find the issue for the transmission and the ECM fuse.
So i re ran the half assed wire inside the dash and down the loom like it was from factory and fixed the trans issue it now has power and works to my knowledge lol im going today to buy 47 wire solder unions and decided to get 47 fuses as well im going to cut the wires to the c2 plug 1 by 1 till it no longer blows the ecm b fuse and then repair the circuit that is faulty stsy tuned for tomorrows madness lol
 
Old Jan 20, 2021 | 01:58 AM
  #33  
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Nice to have fixe one issue. Good luck with the remaining ones.

If you could post a picture of that "thingy" - would be nice to see it.
 
Old Jan 22, 2021 | 03:30 PM
  #34  
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Originally Posted by error_401
Nice to have fixe one issue. Good luck with the remaining ones.

If you could post a picture of that "thingy" - would be nice to see it.
After 47 wires cut and put back together there werent any that made a difference still blows the fuse im at a total loss at this point
 
Old Jan 22, 2021 | 04:03 PM
  #35  
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nope - what I posted right now did not make sense. Deleted it.

Still thinking about your problem.
 

Last edited by LesMyer; Jan 22, 2021 at 09:11 PM.
Old Jan 24, 2021 | 03:11 AM
  #36  
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Have you followed the path to the fuel pump?
 
Old Jan 24, 2021 | 03:43 AM
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Originally Posted by error_401
Have you followed the path to the fuel pump?
Yes sir jumping it over with a 12v source works good and kicking in the power through the relay also works flawless. Resistance checks are all either 0.000 and no more than 0.008, i can't seem to find a way to read the ground post on the relay but by using the fuel pump circuit i think that makes it good if it works right?
 
Old Jan 26, 2021 | 02:39 AM
  #38  
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Anything particular when it blows that fuse?
Does A/C start?
Electrical fans?

Something recurrent happening before the fuse goes out?
 
Old Jan 26, 2021 | 03:30 PM
  #39  
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Originally Posted by error_401
Anything particular when it blows that fuse?
Does A/C start?
Electrical fans?

Something recurrent happening before the fuse goes out?
no sir it nothing out of the ordinary not that i can see anyways it was i 65 degree day here in ky i began pulling the fenders and front core support to get a better look and once again i didnt find any broken or burnt, frayed wires i beleive this one may go to the scrap pile....
 
Old Jan 28, 2021 | 02:56 AM
  #40  
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Hard to get by problem. Depends on how much time you will devote to find it.
 
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