1985 Monte Carlo SS known as Barney

[SSLance]

So I have 4 coolant temp sensors currently wired up on my engine...and I can only think of 3 that I need. Anyone have any idea why I ended up with 4?

I'm game planning on where to put the new coolant temp sensor for the EFI (which will let me delete any that are electric fan related) but I'm not ready to disassemble the car just yet.

First is in Passenger side head, pretty sure it was the last one I added and is the cooler of my fan switch sensors.



Second is in the Driver side head, pretty sure it is for my Dakota Digital Dash



These two are in my Thermostat housing, pretty sure one of them is the second switch for the high speed fans, the other, have no clue...



What the hell would I need a 4th one for? It sucks to get old!!