Jer&Ger wrote:
Hi everyone. It's been a while since I posted, but I need some help. I think the last time I posted I was talking about picking up another Dodge based RV & I was going to rebuild it. Well as life can happen sometimes, I'm still working on it. I could use some help on something that I have not been able solve on my own. My temp gauge is not working and I don't know where to start. I've checked online to try to find where the sending unit is located & not finding it. It's a '76 440. Any help would sure be appreciated. TIA, Jerry
It's not surprising you're having problems locating it ... I just did a quick google trying to find a good picture of the sensor ... most of the pictures that came up were of more modern sensors, with the more complex, multi-wire connectors required for use with engine management computers.
You're looking for something that looks like a small bolt head with a small diameter threaded stud sticking out the top. (Some have 1/4" blade connector instead of the threaded stud.) The fact that they're small makes them especially hard to find, as well as the fact they're often located behind hoses and other stuff.
Your sensor should have a single wire going to it, unless the wire has come off, which often happens.
Typical location is towards the front of the engine on the water pump, intake manifold, or radiator hose housing. (From what I can tell from a quick look-see, Mother Mopar put them in a variety of places on big block engines ... all located in the same general area near the distributor.)
Let's find it first and then I'll walk you through simple trouble shooting. (I know several possible causes, besides a loose sensor wire, that could cause the gauge to stop working ... all of which are simple to diagnose.)
