2001 Dodge B3500 van oil pressure gauge not working.....Installed new sender unit....still not working ?????
All other gauges working OK. All fuses OK.

 

There are two senders, a 2-wire one for the ECM to use and a 1-wire one for the dash gauge. Which one did you replace?

 

I had that happened twice - each time was when I was using crappy oil or the oil was over a quart low.

These vans need good oil (Mobil 1) and STP oil treatment. These motors really need the ZDDP in STP. My oil performance and engine sound is so much better with STP.

 

Where is the single wire sending unit located?