Blue Light Water Temp Fahrenheit

Nice little gauge it is cheep but I haven't had any problems with it other then the place of it on my motor it always says it's over heating bc the factory temp sensor is right on top of one of my cylinders but other then that and it no liking my amp it works great the gauge goes up if I'm listing to loud music bc the wires are right next to each other and sometimes will make the gauge glitch out and just show up one random number in the middle of the screen. But the little red light still indicates when it hit 212 degrees f I believe.

It was very simple to install. You will need wire, connectors, and an add-a-circuit for the fuse box, but it was simple. It is accurate to my knowledge. For the money, it is great. I use it in a 1999 Honda Accord. The only issue is that you have to use the sensor that comes with it, or it will be very inaccurate. It still works great a month or two later.

Complete junk. The coolant sensor is very cheaply made. Never worked from the moment it was installed. Don't waste your money. The oil pressure gauge never worked either. Stays on 150. The volt gauge works bit it's a few volts off. Not reliable at all. Spend the extra for a good reliable set of gauges. I bought the ProSport EVO series and the are dead on the money. Amazon has turned into the US version of Temu just overpriced. It's hard to find good quality products from Amazon anymore.

I had previously bought a tach for $40. It quit after less than a month. But I had bought it more than a month ago so no return. I decided to buy this one thinking that for the price it would be a waste of time. Man was I wrong. It's been about 2 months and not a single hiccup. I was so impressed I bought another one for my other truck. Very pleased with this company so far I'll probably buy a few of the other guages they sell. Do I need them no but for the price why not

Overall, this is a good temp gauge for the money. BUT - it HAS to be grounded properly, and the cryptic instructions don't tell you anything about that. The ground for the power source is DIFFERENT than the ground for the sensor. Just plain 12 volts for the power hot lead, and almost any "OK" ground for the negative power lead. If the sensor hooked into your radiator water system is not grounded at all, it will read 104 deg F. This is likely the low end of the sensor's temp sensing capability. If you hook a ground lead from chassis to the electrically insulated lead of the sensor, it will read 302 deg F and a warning red LED will light up. Likely 302 is the upper limit of the gauge's range. But if you hook a good ground lead (like directly from the battery) to the FITTING that the sensor screws into, then it will read the temp properly. I thought that would NOT work because I had used teflon tape on the various piping adapters I had to use to install the sensor to where I was measuring the water temp. I thought the teflon would electrically insulate it. But it DOES work, I don't know why. I think the effective range of the sensor is 104 to 302 degrees F. So don't freak out if you see 104 or 302 degrees. Just means you have to ground the temp sensor properly.

2 down & waiting for 1 more gauge to arrive before mounting... They should be pretty cool...

I've been running this for about 6 months now in a 1993 Geo Metro. The sensor is mounted in the thermostat housing, directly across from the sensor for the "dummy" temp gauge standard for this car. I thought it was working fine, then I noticed something funny when summer arrived and I started using the air conditioner. As soon as I turn on the AC the temp gauge reading jumps: about 10 degrees F with the blower on 1, 20 degrees with the blower on 2, etc. If I turn off the AC the reading drops immediately. I don't see how the actual coolant temp could rise and fall at the thermostat housing instantaneously. Since the "dummy" gauge doesn't actually show temp, I don't have anything to compare this gauge to. I was considering using 2 of these in my truck--for coolant and trans--but after this experience I'm hesitant.

I installed this in my John Deere 6x4 Gator to keep an eye on the engine temperature. The vehicle does have an idiot light that came on a few times but I wanted to know what the temperature actually is since the radiator fan does not run constantly. This was an easy install. I purchased an Universal Radiator Hose Sensor Gauge Adapter (28mm) to spice into the radiator hose coming out of the engine an inserted the sensor into the adapter. I cut a 2" hole in the plastic dashboard to mount the gauge. The minimum reading on the gauge is 104F when cold. But as soon as the engine warms up the thermostat opens, the gauge responds immediately.