Cummins questions

Learjet wrote:

IT_Burnout wrote:

spoon059 wrote:
If you leave the Cummins stock it will never allow itself to get too hot. It will defuel if temps ever got high enough. The only temp you need to worry about is turbo EGT's. The manual tells you to let the turbo cool down for a couple minutes after a hot haul. Generally for me, that means I just leave the truck running while I refuel and I leave the truck running while I disconnect the camper.

Not trying to high-jack a thread here. This got me curious I know refueling a gas engine while running will trigger a CEL. I hate shutting mine down while refueling just for the reason you mentioned. But I been skittish to leave it run thinking I might get a CEL. I take it you have never had that issue while fueling?

The tank on a diesel in not sealed like a gas engine. I did 850 miles a few weeks back and never shut the truck off. The tank on the Ram is vented not sealed, that is what caused the CEL on a gas engine.

I won't be shutting mine down anymore either then. I been cranking it right back up again after fueling and letting it idle to cool a bit more while I go in to pay for the fuel. Since the the truck stops I hit don't generally have a credit card readers at the pump. Good to know that I can just leave it run, thanks for the info.

IT_Burnout wrote:

spoon059 wrote:
If you leave the Cummins stock it will never allow itself to get too hot. It will defuel if temps ever got high enough. The only temp you need to worry about is turbo EGT's. The manual tells you to let the turbo cool down for a couple minutes after a hot haul. Generally for me, that means I just leave the truck running while I refuel and I leave the truck running while I disconnect the camper.

Not trying to high-jack a thread here. This got me curious I know refueling a gas engine while running will trigger a CEL. I hate shutting mine down while refueling just for the reason you mentioned. But I been skittish to leave it run thinking I might get a CEL. I take it you have never had that issue while fueling?

The tank on a diesel in not sealed like a gas engine. I did 850 miles a few weeks back and never shut the truck off. The tank on the Ram is vented not sealed, that is what caused the CEL on a gas engine.

spoon059 wrote:
If you leave the Cummins stock it will never allow itself to get too hot. It will defuel if temps ever got high enough. The only temp you need to worry about is turbo EGT's. The manual tells you to let the turbo cool down for a couple minutes after a hot haul. Generally for me, that means I just leave the truck running while I refuel and I leave the truck running while I disconnect the camper.

Not trying to hijack a thread here. This got me curious I know refueling a gas engine while running will trigger a CEL. I hate shutting mine down while refueling just for the reason you mentioned. But I been skittish to leave it run thinking I might get a CEL. I take it you have never had that issue while fueling?

Thanks,what I was needing to know.

Yep, all normal.
I don't think an 01 will derate when too hot though.

Factory stat is 190deg and the cooling fan fully engages at 217 iirc. Maybe 213.
Its normal. When you hear the fan roar you know you're finally workin the engine.

If you leave the Cummins stock it will never allow itself to get too hot. It will defuel if temps ever got high enough. The only temp you need to worry about is turbo EGT's. The manual tells you to let the turbo cool down for a couple minutes after a hot haul. Generally for me, that means I just leave the truck running while I refuel and I leave the truck running while I disconnect the camper.

That is normal when towing. Use the tow/haul mode and keep the revs down around 2,000 rpm.