Weird Temp

[98whitelightnin]

Coming home from my trip to Texas last week and I see my isspro mechanical water temperature gauge setting about 215* but the gauge in my cluster and my ScangaugeII both reading 188-190. I check my gauges periodically when im driving my truck so I know it was not doing it very long. We stopped to run through the Chik-fil-a drive through and after about 10 minutes or so being back on the road I noticed it. I was running 80 so I backed off down to 70 and it came down a little, maybe 210 or so. I kept a hawks eye on it for the next 10-15 minutes and it just dropped to 195 or so like normal. I watched it the rest of the trip and since but it has not come out of the normal range. The sensor is in the port between #2 and #3 cylinders. Coolant and oil all look good, block looks good but it has me worried a little. I hope its just a faulty gauge, to bad Di Pricol went out of business because these Isspro are not the same quality they were but that is another thread.

[Mopar1973Man]

You need to verify which gauge is correct. Use a IR heat gun and do a couple of quick measurements with the engine off after its fully warm and see what you get.

[98whitelightnin]

The mechanical gauge gets up over 200 after I shut the engine off.