SeanPwnery
Active Member
- Nov 30, 2022
- 130
- 52
- Truck Year
- 2016
I think my original thread was caught up in the SPAM-exodus. No problem - I'll try to make this one a little less wordy.
Some of you know I had the 5v reference issue, I took every connector I could find, cleaned them, re-applied di-electric grease to them, and reconnected them. While I was in there, I cleaned the MAP sensor again too. Turns out the 3-way coolant valve freaked out everything downstream on that circuit but that was fixed pretty quickly.
I'm having a really weird issue these days - if I accelerate fairly lightly, every so often the truck will "Bang" ... or "Buck" for a split second. The jolt feels similar to somebody locking up the brakes in an instant, but immediately letting off. The engine feels like someone turned it off in that jolt, but immediately recover. In that jolt, the display on the dash says "Battery Voltage Low" - and the Electronic throttle, and I think the DPF icon (the yellow farty logo) light up at the same time. One time about two days ago it did this, but a second message came up on the dash "Battery protection mode" or something like that popped up, but it immediately behaved like normal afterwards. Sometimes I'll click through the menu and see the Battery Voltage. Usually I see 14v, but immediately after the bang and for a while, it'll read 13v instead. I always assumed the alternator eventually tops off the battery and regulates it down.
Again, it's random and instantaneous, and the whole event ends in less than a tenth of a second, but it's REALLY off-putting when you're accelerating and this happens literally out of nowhere. It will only happen once in the trip, but it happens pretty often now. I'm not really sure where to even begin looking for this little gremlin. The battery is a Mopar original battery I picked up at the dealer last year, and all the terminals are still clean and non-corroded. I checked the serpentine belt (what little I could see of it - never knew an engine to COVER a large portion of it like this one does), and it's intact, and not tore up missing parts or dried and cracked on the ribbed side. No CEL's so I have no codes to pull.
Any thoughts?
Some of you know I had the 5v reference issue, I took every connector I could find, cleaned them, re-applied di-electric grease to them, and reconnected them. While I was in there, I cleaned the MAP sensor again too. Turns out the 3-way coolant valve freaked out everything downstream on that circuit but that was fixed pretty quickly.
I'm having a really weird issue these days - if I accelerate fairly lightly, every so often the truck will "Bang" ... or "Buck" for a split second. The jolt feels similar to somebody locking up the brakes in an instant, but immediately letting off. The engine feels like someone turned it off in that jolt, but immediately recover. In that jolt, the display on the dash says "Battery Voltage Low" - and the Electronic throttle, and I think the DPF icon (the yellow farty logo) light up at the same time. One time about two days ago it did this, but a second message came up on the dash "Battery protection mode" or something like that popped up, but it immediately behaved like normal afterwards. Sometimes I'll click through the menu and see the Battery Voltage. Usually I see 14v, but immediately after the bang and for a while, it'll read 13v instead. I always assumed the alternator eventually tops off the battery and regulates it down.
Again, it's random and instantaneous, and the whole event ends in less than a tenth of a second, but it's REALLY off-putting when you're accelerating and this happens literally out of nowhere. It will only happen once in the trip, but it happens pretty often now. I'm not really sure where to even begin looking for this little gremlin. The battery is a Mopar original battery I picked up at the dealer last year, and all the terminals are still clean and non-corroded. I checked the serpentine belt (what little I could see of it - never knew an engine to COVER a large portion of it like this one does), and it's intact, and not tore up missing parts or dried and cracked on the ribbed side. No CEL's so I have no codes to pull.
Any thoughts?