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Friends 05 Cummins won't start after sitting

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Old Oct 9, 2025 | 01:52 PM
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If anyone is watching, here is where I am at... I've not had opportunity to return out to the ranch as I think I should have a pro-grade scanner that'll show

[common rail fuel pressure]

[ immobilizer system status and faults (transponder key)]

[- Low pressure fuel test kit (in tank lift pump supply to injector pump) ]



and perhaps some

[ high pressure injector block-off caps 14mm ] (incase it seems that the common rail fuel pressure is leaking down through a stuck injector)



Along with a screw driver and a really big hammer, fuel filter, DMM
 
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Old Oct 9, 2025 | 06:27 PM
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Bring two big hammers. Sometimes one is just not enough.....
 
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Old Oct 10, 2025 | 11:08 AM
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Originally Posted by HeyYou
Bring two big hammers. Sometimes one is just not enough.....
Amen to that lol
 
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Old Oct 13, 2025 | 01:04 PM
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OK, I was able to borrow SnapOn scanner and Loan-A-Tool fuel pressure test from AutoZone.

LOL, SO I arrive and the truck is locked??
I previously had asked Tommy if he had another transponder key. He located a second one, and reported that it didn't start a few days ago...

When I arrived, I went to plug in the OBD2
I told him the truck was locked and asked him for the key. He said that they ARE BOTH inside... Took two hours to get back inside. (without breaking anything or damaging the weather seal(s) ) BTW, like a Joan Crawford movie "Mommy Dearest" not a stiff piece of wire anywhere on the estate...
 
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Old Oct 13, 2025 | 01:05 PM
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No CEL's or MIL indicated on dash or 'Key Dance' [Prior with the homeboy walmart scanner we had a solitary (well, 2 of 2 (both of 2)) code of P2509 that was (were) cleared and did not return [Previously reported my post #10 above]

The Instrument cluster diag test revealed some codes not sure how to read them as they displayed in pairs
Now looking at it, perhaps they are scrolling?
They appeared on odometer LED as: in this order
C-CodE
61 89
81 00
AF 00
00 00
then displayed the odometer 291,205


The Snapon scanner showed (as I fingered through the menus) it had a IMOBOLIZER KEY section but showed no communication when I tried it *CLUE

I showed a cranking fuel pressure (floating) of up to 6715 PSI when cranking but staying above 4700 psi
 
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Old Oct 13, 2025 | 06:07 PM
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I think you found at least part of the problem there...... Can you program a new key, if you DON'T have on that works?
 
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Old Oct 16, 2025 | 06:13 PM
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Also some more truths came out about what happened to cause this situation

Supposedly, my friend drove the 'ole reliable' RAM 3500 home and parked under cover. For some reason, he turned on the ignition again, perhaps to put up the windows and then got out (leaving the ignition on for about a week or two) and drained the batteries down flat.

When he next went to drive, he found the batteries dead, recharged them, and now it'll crank but no start...


She runs!
I awoke yesterday thinking TJ tried a second set of transponder keys, NO JOY and TJ disconnected and reconnected the batteries NO JOY... and I respect the man. BUT DON'T trust the other guy

The batteries are fully charged, but the terminals look wonky so while I was shorting them for the reset, I used the terminal brush tool and polished them (all four) up 'clean and bright', including all the bully wires attached to the terminal clamp bolts.
When I got in and was about to try to start it, I remembered the fly by wire throttle body and the reset procedure whenever the throttle body is disconnected, so I did that before engaging the starter.

It fired up and idled smooth.
Returned to service
 
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