O4 Cummins lope at idle

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Mar 2, 2026 | 08:22 AM

#61

dodgetruck2

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From: Parker, SD

Quote:

Originally Posted by Goshdarnram

Oh okay makes sense I will get it checked out absolutely, I'm starting to believe it has to be an injector issue, truck runs fine when warm I would just rather find the issue before something negative happens

its not a fool proof theory but if you're not hazing smoke or anything when warm, the possibility of damage is minimal

Mar 7, 2026 | 09:49 AM

#62

Goshdarnram

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All tested between .4 and .6

Mar 7, 2026 | 10:18 AM

#63

HeyYou

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From: Clayton MI

Isn't that a bit low??? Aren't they supposed to be around 12 ohms or so?? (we are talking about injector resistance here, right?)

Mar 7, 2026 | 10:57 AM

#64

Goshdarnram

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From what I've read anything lower the 1.0ohm is good to go truck was off when doing readings

Mar 7, 2026 | 11:02 AM

#65

Goshdarnram

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I just took the cover off and probed the 2 prongs on the injectors them selfs for some reason there was oil in the plug ins to the injectors not sure if that's normal or not but did notice that

Today it didn't lope wonder if it's because it's like 80

Last edited by Goshdarnram; Mar 7, 2026 at 04:22 PM.