Reasons the Temperature Gauge Reads High
If the temperature gauge reads high, it could mean your engine is overheating. Another reason your reading might be high is you could be losing coolant. A small leak or evaporation may cause your radiator to slowly lose coolant. A third reason your temperature gauge reads high could be because the thermostat is broken. If this is the case, you may need a coolant temperature switch replacement. The last reason the temperature gauge could read high is because of a water pump, or water pump gasket failure. If the water pump is malfunctioning, it may need to be replaced by a professional.
What to Do If Your Temperature Gauge is High
If your temperature gauge is reading high, it means your car is overheating. This is a very serious matter and you should never drive an overheating car. If your car starts to overheat, shut off the air conditioner and open the windows immediately. If this does not reduce the overheating, turn on the heater as high as it can go. If this still doesn't work, pull over on the side of the road, turn off the engine, open the hood carefully, and wait until the vehicle cools down. Never open the radiator cap while the engine is hot - coolant can spray and burn you. Once the vehicle has cooled, take the car to a mechanic right away so they can diagnose the problem. Cars are especially susceptible to overheating in hot climates, like what's common in cities like Los Angeles, Phoenix, Las Vegas, or Atlanta.
The temperature gauge is an important tool in your vehicle that shows the temperature of your engine's coolant. Contact YourMechanic and have your car inspected for overheating if it reads too high, as this can cause serious problems...
Reasons the Temperature Gauge Reads Cold
On most vehicles, the temperature gauge reads cold until the engine has run for a few minutes. If the temperature gauge still reads cold after the engine has warmed up, the gauge may simply be broken. Another reason the temperature gauge could read cold is if the thermostat in the vehicle stays open. With the thermostat stuck open, the engine can be overcooled, causing a low temperature reading. If this is the case, the thermostat may need to be replaced.
SOURCE: 1998 Dodge Durango no heat when using heater.
BLEND DOOR STUCK OR BROKEN. NEEDS TO REMOVE DASH AND HEATER/EVAP CORE BOS TO REPAIR REPLACE.
SOURCE: toyota estima 2.2 td 1992 water temperature high
I had same problem, but when I got to top of hill and sat idle for a bit, it would kick down ? replaced thermostat and still happened until I dumped radiator fix for temperature problems, overheating and such and has not happened since, no problems but even when I know the engine has to be overworked and should show hot, it never goes past middle. I'm not sure of name of liquid, got it from a car dealer, but it is basic about $18.
SOURCE: engine overheating
trapped pockets of air are a common problem. If the heater/defroster fan doesn't blow toasty warm when the engine is hot, you are probably low on coolant. or have to bleed the system more. It helps to park the car on a grade (front end high), turn the heater temperature control up all the way, and idle the engine with the radiator cap off. Then, fill the cooling system. Use distilled water - about fifty cents a gallon from the supermarket. And if you didn't change the radiator cap when doing you other stuff, go ahead and change it. If the old one is bad, it won't hold the proper pressure and the coolant can boil, causing it to over heat.
SOURCE: temperature gauge not working after water pump and thermostat rep
most sender to gauge are on the thero housing, if the therostat housing has one or two senders on it, one it temp and one controls fan, see if wires on sensors are hooked up, thanks robert b.
SOURCE: my 2002 jeep liberty is running hot i have changed
your clutch on cooling fan could be faulty or your radiators cores is blocked and restricted.also grilled could be blocked restricting air flow.
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