Question about 2007 Chevrolet Impala LS Sedan New Cars

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Display reads engine hot a/c off no temperature gauge reading on 2007 impala

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Sounds like your temperature sending unit is bad. If you need instructions for replacing the sensor, please let us know.

Posted on Sep 10, 2010

  • Larry Aug 01, 2011

    Jeff how do you replace the sensor? I am having the same problem.

  • Jeffrey Turcotte
    Jeffrey Turcotte Aug 03, 2011

    Hi, sorry for the delay. This can also be a wiring issue. Do you know where the sensor is? If not, which engine do you have? In most cases, the sensor just unscrews from the block, but you need to use some sealer on the threads of the new sensor.

    Jeff

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Jeff, how do you replace the sensor?

Posted on Aug 01, 2011

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Temp sender is out or shorted to ground.

Posted on Sep 10, 2010

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Changed out water pump and thermostat and vehicle runs high temperature what could be issue?


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.

Oct 28, 2017 | Cars & Trucks

1 Answer

My car wont go in between the hot and cold meter


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1 Answer

2007 Chevy Silverado 2500 HD. I was driving and my digital dashboard reported engine hot and AC turned off. My temperature gauge read cool. What do I need to replace?


This sounds like a bad coolant temp sensor that give computer false reading, check the coolant temp sensor connector and if it is good with no bad wires to connector then replace coolant temp sensor , when the computer gets a signal from temp sensor that engine is hot it turns fans on high speed to cool radiator and displays a/c turned off , if this truck does not have electric cooling fans then they wont run just explaining what happens depending on engine and cooling set up. replace coolant temp sensor and check connector.

Dec 25, 2012 | 2007 Chevrolet Silverado 2500HD

1 Answer

2004 Impala ls temperature dash gauge


fans came late on those car,like 212 and second fan comes on at 224,you reprogram it to come a lot sooner,,other thing is there might be gunk inside the block,and coolant has hard time to pass through,and staying longer than enough in block temp goes high,even tough the radiator is doing it's job,it is just coming out block lot hotter than it suppose to be,and gauge read the block not the radiator

Apr 18, 2017 | 2004 Chevrolet Impala

1 Answer

Heater is not getting hot and the temperature needle isn't working


First I would have said your thermostat is stuck open. But if the engine is overheating and the gauge reads cold the cooling system is probably empty. Or there may be alot of air pockets in the cooling system instead of all liquid coolant.
If the system was full and the water pump failed the heater might not work but the gauge would read hot.

Jun 25, 2012 | 2004 Chevrolet Impala

1 Answer

I have 2002 impala with 3.4 engine. i have a problem with the engine over heating. i replaced the water pump thermostat radiator and cooling fans and it still runs hot. What's strange is the temperature...


CHECK COOLANT SENSOR WIRE CONNECTOR MAKE SURE ITS ON TIGHT NOT DAMAGED.IF ALL IS GOOD.YOUR COOLANT TEMPERATURE SENSOR BAD CAUSING THE COOLING FAN NOT TO COME ON.

Jul 03, 2010 | Cars & Trucks

1 Answer

Temp. gauge reads high some times. but the motor really isnt hot


It sounds like the coolant temperature sensor is beginning to fail. It is highly unlikely that the in-dash gauge is a problem. The coolant temp sensor inputs to the computer affecting everything from radiator fan speed, engine fuel/air calibration and a variety of other parameters.

Be absolutely certain to "burp" every bubble of atmosphere from the coolant system too. Air bubbles have the amazing ability to prevent coolant flow and will cause all sorts of problems, especially if the bubble wants to hang around the temperature sensor location.

Normal operating temperature is going to be around 210 F.

Most Autozone, Advance locations will read engine problem codes at no charge, so drop by one of those locations and let them read the problem code.

My guess will be the coolant temperature sensor. Then have the problem code reset, remove all air from the coolant and let us know how this worked.

Mar 11, 2010 | 2004 Chevrolet Impala

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