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99 7.3 random stalling help me

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Old Jan 31, 2023 | 09:14 PM
  #1  
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Exclamation 99 7.3 random stalling help me

99 f 350 7.3 dsl stalls while driving
changed crank sensor 3 days ago
same problem it will just shut off while driving put in neutral and restart it
and carry on
it has to be electrical because it did it before i changed motor and trans
it has become more frequent like 2-3 times every 5 miles
 
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Old Feb 1, 2023 | 07:32 AM
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Long shot but I've seen ignition switches do this. When it stalls try wiggling the ignition switch and see if it comes back to life,
 
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Old Feb 1, 2023 | 09:41 AM
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I had a loose banks chip do this.
Visually check all wire harnesses where they might contact metal. Other than that you might have to data log with a scanner.
 
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Old Feb 2, 2023 | 07:05 PM
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very interesting i pulled my banks chip on the way home today the first time it stalled and maybe 7 miles no stall im not totally convinced yet but i sure hope thats the problem
my chip is probably 17 yrs old
have you heard of banks chips doing this?
 
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Old Feb 2, 2023 | 07:12 PM
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Mine is the only one I have seen, but it was slightly loose. Taped it tight with gorilla tape and it's been fine since...
 
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Old Feb 2, 2023 | 07:48 PM
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You have 34 posts so I am hoping you have seen this before... Do not throw parts at the truck. Use proper trouble shooting procedures.

FORScan, pull the codes and watch the PID's.

Check every connection on the engine to be clean and dry inside and secure, check the wires going into the bundle. This will take about an hour or so to do correctly, you will also get dirty.
Pull the 42 pin connector and check the underside for chafing on the valve cover.
Check each and every primary power connection from the battery to the block, grounds, starter, fuse panels. Clean, tight, and absolutely no corrosion in the past or present. If corrosion has be present suspect the feed wire of being bad due to high resistance.
Is the tin nut properly secure on the IPR?

Engine oil at proper level, type, and weight for conditions as well as environment with no additional additives.
Transmission fluid at proper level when warmed up??? Proper Transmission fluid?? (Mercon V) Yes this can cause issues with the engine running.
 
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Old Feb 3, 2023 | 10:28 PM
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S-squatch now you heard of 2 ever since i took out my 17 year old banks chip no more stalls thank you i am going to try and tape it in ill let you know
 
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Old Feb 3, 2023 | 10:29 PM
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havent stalled since i took it out thank you
 
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