The "Coolant Sensor", for the ECU, is right next to the water neck at the front of the engine. the "Coolant sender", for the temperature guage, should be on the back of the head at the rear of the engine!
On the passenger side of engine, on side near back. It's hard to see, and probably the best way to remove is to lay on top of the engine and work blind, by 'feel'. The sender is connected w/ an 'L' shape connector.
try replacing the intake manifold temperature sender, situated on the water housing in front of the enging block. Mine did the same. firstname.lastname@example.org
On a 1995 Ford Ranger : The ODOMETER is near the center of your speedometer
On a 1995 Ford Ranger # 17 fuse is for the cigarette lighter.
Oil pressure sender /fuel pump switch for 1995 Pontiac transport 3.1 is located between oil filter and starter at front of engine.
A 1995 Ford Ranger has shock absorbers on the front and rear
drl module location on a ford ranger 1995
The 3.0 L - Vulcan engine - was one of the engines offered in a 1995 Ford Ranger
I would first inspect and clean the connection at the sender. If that did not improve the problem, I would replace the sender. I suspect it is a sender problem.
It controls the flow of water from the engine cooling system into the passenger compartment heater core.
There is some sort of retainer to take off but I don't now how to get it off to remove the sensor. This was not supposed to be the answer but explaining the problem, John