Rogue Diesel
New member
- Joined
- Oct 21, 2016
- Messages
- 28
Need some help guys. I have a 2006 cummins with 70k on it and the other day when I went outside to start it, the voltage meter was reading about 11/12 volts and my lift pump under my truck was screaming loud like it was running 10,000 Rpms and the volts wouldn't come up to normal operating range e.g.14v. So I looked under the hood and noticed the pasanger battery had acid bubbling out of the top of it. I immediately turned the truck off and tested the battery and it was no good. The driver side battery tested okay though. I just put new batteries in the truck back in 2015. So I went down and bought a new battery and put it in the truck and as soon as I started up the truck, the lift pump sounded like it was preparing for lift off again and my volts were still around 11/12v. So I shut the truck off and checked all the connections and made sure all the grounds were good to go. I started the truck back up and the volts jumped up to 14v like normal and my lift pump was functioning normal as well. So I went down to homedepot and picked up some stuff and when I went to start the truck again it went back to 11/12v and high rpm lift pump. So I headed back home and shut the truck off and let it sit for a second and started it up again and it went back to normal operations, i.e.14v. So once again, shut the truck off looked under the hood and didn't find anything. Started the truck one more time and it's back to low voltage and high rpm lift pump. I disconnect the lift pump while the truck was running the low rpms and that made no change. Also the new battery that I installed on the pasanger side was rather hot to the touch when I came back from homedepot, the old battery felt just fine. I did not test the alternator yet, account my multi meter crapped out on me today. (So maybe when I tested the battery's with that meter it could have given me bad info.) Anyway I could really use some help figuring this out.
FYI, I have an airdog lift pump.
Thanks.
FYI, I have an airdog lift pump.
Thanks.