hey guys, After changing the thermostat and i think its called the temp sensor thats on the stat housing. my truck stll reads a low temp so i decided to install a mechanical gauge. im not sure exactly where to install the new sender would it be where the factory one is one the thermostat housing

its a 1990 inline 6 5 speed

 

DO NOT remove the sending unit from the thermostat. That sending unit is for the computer. The sending unit you need to change to fix the gauge is on the passenger side rear of the engine block just below the head. If that doesn't fix it then try the mechanical gauge.

 

thanks i appreciate that.. close call

 

Having a bit of a problem trying to get my temp gauge working. Just changed out the sensor on the thermostat housing and nothing. The needle is pinned in the low with good flow through the top hose and good heat from the heater. The turkey cooker thermometer says 150/160 on the idle with flow through the radiator. After I shut the engine off the needle floats up slowly to just below the cold mark. Is there another sensor inline here that needs to be changed out as well? Bad ground? Deliberately cut or modified wire to the gauge from prior seller? Gauge never worked for me. Prior owner says it did work but stopped just before I bought the truck. Not sure which way to go.

 

I am going to try to ground out the plug on the thermostat housing right now to see if I get some action there. Be right back.

 

Mech gauge, I can tell you the easiest way to install if you want.