Oc 4 not getting warm

[we@nb]

I noticed that according to the tempgauge the engine was not getting warm .no movement on gauge. This was new .In the past it showed working temp on gauge. I got a new gauge as a remote read themo showed at least 180 on block. I confirmed the new gauge was working by putting it in pot of water on stove . At 200 according to therrmo the gauge was in run zone . But after install new gauge wont come up either . I took out thermostat and confirmed it is closed cold and open around 180.
    So I am stumped . Can anyone tell me what the head should read with remote temp gauge . What happens if engine runs cold to much? Why would it run cold ,if it is.

[Jack in NB]

Hello, fellow NB'er!

Reading your post, my first reaction was that the new gauge got busted when installed. I've twisted that fine tube off on occasion.

I'd pull it and recheck.

Jack Wetmore in F'ton.

[we@nb]

Thanks for the reply jack. I rechecked the gauge ,it is definitly working and today it moved off peg a little after an hour of plowing snow . Guess I will replace thermostat.

  Do you know a source ?

[we@nb]

I found a thermo. At the parts store (chevy small bock) that fit. I tested it in hot water and installed it .Still no joy . Remote therm reads only 100 F  where the temp sensor mounts on the head. That after 1/2 hour running . Anyone ?

[Jack in NB]

Could the bulb hole be filled with sediment and blocked, preventing coolant from reaching the bulb?

Ran into that recently on an inoperative pressure gauge on a water system.

[eyeball-shifter]

I think the OC-4s just run cool.  I can't get mine up to temperature on cold, winter days.  I had mine on fast idle for 45 minutes and could put my hand on the engine and it was just warm, the temperature outside was in the high teens.  I pulled the dipstick and touched the oil and it was just warm, parts of the radiator were a bit warmer, but not hot at all.  I didn't register anything on my temp guage.