Welcome To Mopar1973Man.Com LLC
We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features. Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.
- Views 580
- Created
- Last Reply
Featured Replies
Archived
This topic is now archived and is closed to further replies.
Did This Forum Post Help You?
Show the author some love by liking their post!
Welcome To Mopar1973Man.Com LLC
We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features. Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.
I've had this truck for many years. Drove it 5 hours from Houston and use it on the farm only. Always had the no bus code. Starts, runs no issues at all.
At first I looked into it. Speedometer also wouldn't read. I replaced the speed sensor and followed the wiring and connections back to the dash. Now speedometer displays 15mph when not moving.. It does move but never bothered to compare speed to actual. It does also have a parasitic drain on the batteries if left connected. Previously I had followed wiring and connections and no change to the no bus. No other lights or other issues known. If he batteries are week the it won't start and the 4wd light will illuminate. One of the PCM plugs is missing the locking clip and the connection at the fuse box under the hood is stripped so the bolt won't tighten all the way. Can't read any codes at the OBD2 port
Decided it give it a go again on fixing the issues and putting it on the road again. Found this site last week or so. I've surfed a great deal before asking questions, but I am at that point. Already more help than any other forums on the subject. I will begin to work on the WT ground mod.
Last night I put a meter to chase the no bus issue at the OBD2 port. I checked voltage between pin 3 and 5 (using 5 as ground) 2.46 volts. I checked voltage between pin 11 and 5 2.43 volts but would jump around ranging from 2.39 to 2.43. I've read it should be 2.51 and 2.49 which I assume it is pretty hard and fast due to computers. I also assume voltage draw some where from pcm to points in between... Where do I go next?