Overheating bad temp gauge ?

[Tonyt22]

My 93 with a 4.7 stroker has started to run hot . I think . Have the kids suspension cyclone fan set up
After 5 min of warming up temp shows 200 but ir gun on stat housing shows 165 running a glow shift temp gauge only thing that concerns me is it was ethier so hot or dumb luck the heater mixer valve blew yesterday . Temp on the dash shot up to 240 . Jeep runs fine no milkshake clear exhaust i bypassed the heater core while I trouble shoot

 

[stickandrudder]

everytime i have a bad temp sensor probe i got wild temp swings on the gauge. Maybe try another temp sensor, return it if it's not the issue. Seems like an extreme temp swing all of a sudden.

 

[mewz99]

Bypassing the heater core might throw off your troubleshooting - I was seeing overheating while I had my heater core bypassed, my theory is that almost all the coolant flow was going through the low restriction bypass and I wasn't getting enough flow through the rad to cool it. Adding a ball valve and shutting it most of the way seemed to help a lot in my case.

I had other contributing issues also, so I might be off base, just something to keep in mind while you diagnose.