I have an ISSPRO EV2 100-280 degree coolant gauge. When I was driving today, all the sudden the gauge spiked to and remained at 250 degrees, also the AC cut out when this happened. The factory gauge, however, was still reading normal and the overheat light did not come on.
Anyways, I pulled over as quickly as I could and shut the engine off. There was no steam or signs that I had overheated, so I checked the hoses and belts, everything looked fine, and there was no visible coolant leakage anywhere. With that in mind, I started the engine back up, and the coolant gauge was back close to 195 degrees. Let it idle for a minute or so and it remained there.
So it seems like this must have been an electrical problem, but my concern is being able to know that for sure. I don't know what would cause the gauge to just randomly spike to a certain temperature like that, especially since I have had no issues with it before. I have only had it for about 6 months.
Anyways, I pulled over as quickly as I could and shut the engine off. There was no steam or signs that I had overheated, so I checked the hoses and belts, everything looked fine, and there was no visible coolant leakage anywhere. With that in mind, I started the engine back up, and the coolant gauge was back close to 195 degrees. Let it idle for a minute or so and it remained there.
So it seems like this must have been an electrical problem, but my concern is being able to know that for sure. I don't know what would cause the gauge to just randomly spike to a certain temperature like that, especially since I have had no issues with it before. I have only had it for about 6 months.