Question about 2007 Chevrolet HHR Special Edition

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Engine Coolant Temperature Gage

When I turn on the engine the temperature does not move which makes it impossible to tell if the engine is overheating or not. 0oooooooooooooooooooooooooooooo . I drive a Chevrolet HHR Year 2007.

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  • Ydoouask Nov 24, 2008

    same problem

  • abrawley Dec 12, 2008

    My problem is similar. My gauge both regular and digital seem to have a mind of its own. They work only when they want to.. We have taken it to the dealer and they can't help us unless we get it there while the gauge isn't working. Everytime we got ready to take it to the dealer the gauge mysterously starts working again. We have already put a new thermostat in it and that did not help.

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  • 202 Answers

I have a 2006 and had the same problem. The car was still under warranty, so I took it in for repair. Several times. They finally replaced the thermostat and that solved the issue. Try that.

Good luck and please let me know how it works out for you.

Posted on Mar 03, 2009

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My 2008 Pontiac torrent gage is stuck at the top where the over heating mark is but there is no other indicators that it is overheating what does this mean.


The engine control module (ECM) calculates the engine coolant temperature as determined by the coolant temperature sensor. The ECM sends the engine coolant temperature to the body control module (BCM) via the serial data circuit. The instrument panel cluster (IPC) displays the engine coolant temperature when the BCM sends a serial data message to the IPC indicating the engine coolant temperature. The engine coolant temperature gage defaults to 0° or below if:
• The ECM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of serial data communications with the BCM.
• The BCM detects a loss of serial data communications with the ECM

The place to start would be to hook up a factory or professional scan tool to see what the actual coolant temperature is ! At the PCM then at the BCM and finally at the instrument cluster . If normal the gauge is bad . The instrument cluster would need to be taken out of the vehicle an sent to be repaired . Or you could buy a used one out of a salvage yard or from on e-bay etc....

Dec 30, 2016 | 2008 Pontiac Torrent

1 Answer

Where is the tempature guage sensor


The temperature gauge sensor as you call is for more then just the temperature gauge . The temp. sensor is an input to the PCM -engine computer ! If it were bad you would have drivability problems , the transmission would not shift correctly an the check engine light would more then likely be lit .
Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the PCM. The body control module (BCM) receives a class 2 message from the PCM indicating the engine coolant temperature. The BCM converts the engine coolant temperature into a percent gage deflection. The IPC receives a message from the BCM via the serial peripheral interface (SPI) indicating the requested gage position. The engine coolant temperature gage defaults to 38?°C (100?°F) or below if:
?€¢
The PCM detects a malfunction in the engine coolant temperature sensor circuit.


?€¢
The BCM detects a loss of class 2 communications with the PCM.


?€¢
The IPC detects a loss of SPI communications with the BCM.


Your gauge is more suspect then the sensor . gm had a problem with stepper motors that control the pointer for the gauge !

Sep 01, 2015 | 2001 Chevrolet Chevrolet Malibu LS

2 Answers

I have 2006 Chevy impala 3.5l and it's slightly overheating and I just recently changed the water pump and thermostat but it didn't change, and when I turn my heater on the air flow is very low.


check the lower (suction) radiator hose that it cannot collapse, they usually have a metal coil inside to prevent this. If you left this out when installing the water pump it could be the cause..What temperature is the gauge reading? You could have been running too cool before and now that the new thermostat is in its up to normal temperature.

Low airflow through the heater is a separate issue and can be caused by leaves in the ductwork, a blend door not opening/closing fully, clogged heater core (are you a smoker?) Good luck.

Edit: I had another thought on this.. the cooling system needs bled carefully, air in the system can cause symptoms like you describe, look for a bleeder screw on top of the engine somewhere and make sure to let the air out of the system.

Jun 27, 2015 | Cars & Trucks

2 Answers

My engine overheating problem is in my 2000 land rover. The fan is running and the electric fan comes on at correct engine temperature. After start up the engine runs normal the temp gage rises slowly to...


the usual suspects are:
stuck shut thermostat
clogged raiator
dead water pump
low coolant level
it's sunday, rovers don't work on sunday.
Then again, maybe its wednesday, rovers take half a day then. 25322555-21syibu3fgwpdxocjnkpw0ib-5-0.jpg

Dec 15, 2014 | Cars & Trucks

1 Answer

Peurgot 206LX--1.4 petrol. X REG...31.10.2000 .engine overheating? Worse when standing ( coolant Ok )


Some things to check - make sure that the radiator fan is coming on at the right temperature. It might not be turning on at all due to a blown fuse or a bad fan relay. Also, when the engine is up to temperature make sure the thermostat is opening up properly and be sure the radiator itself is not clogged. When the engine begins to overheat, turn the heater on (full heat, highest blower speed) and see if you get hot air and the engine temp begins to come down. This will tell you of the coolant is circulating properly.

Nov 01, 2014 | Peugeot Cars & Trucks

2 Answers

I have a 1999 oldsmobile intrigue with a 3.5 engine and it is overheating what might be the problem?


It's usually the thermostat, I woud pressure test the cap. It may need to be flushed. Are the fans working? Is there a 50/50 mix of anti-freeze

Sep 11, 2011 | 1999 Oldsmobile Intrigue

2 Answers

I have a 2004 Pontiac Sunfire. When the car is in idle the air blows out hot and the Temperature gage rises and the car over heats. When the car is moving the air blows out ice cold and the temperature...


Sounds like your cooling fans on the radiator are not working. The fans are activated by a thermol switch on the engine or radiator reading the coolant temperature and an A/C switch. When the coolant is too hot the fans should activate cooling the system down. And, when the A/C is on the fans should also activate in order to cool the condensate so the A/C would work.

When you are driving, the movement of the vehicle throught he air is providing enough air flow to keep things cool and functional.

I would check the radiator fan fuse or fuses first. If those are OK I would try to run the fans with 12 volts and a ground that I supply just to see if the fan motor(s) actually run when powered. If the fan don't run when powered then the fans are bad and will need to be replaced. If the fans do run when you power them manually, then something is not allowing the power to activate, like a relay, control unit, or wiring.

It will take a little diagnostics, but it is not too difficult to chase it down.

May 03, 2011 | Pontiac Sunfire Cars & Trucks

1 Answer

Where is the temperature sensor for the temperature gage


Engine Temperature Sensor Operation:00116_engine_temp_sensor.jpgThis sensor monitors the temperature of the engine and sends that information to the engine control computer to regulate the amount of fuel needed - more if engine is cold and less if it's hot. The signal generated can also be sent to the temperature gauge as a visual indicator of overheating and imminent danger

I checked with autozone.com and their site says that the engine temperature sensor is not used on both engine sizes available for this vehicle.

The Coolant Temperature Sensor is used though. So maybe it has a dual purpose on your vehicle.

Coolant Temperature Sensor Operation:00113_coolant_temp_sensor.jpgThis sensor monitors the temperature of the engine and sends that information to the engine control computer to regulate the amount of fuel needed. More fuel is needed if the engine is cold; less if it's hot. If the temperature is extreme, the signal will be sent to the temperature gauge as a visual indicator of overheating and imminent danger.

Because ECT (engine coolant temperature) sensor procedures vary depending upon their location, first locate the part. You may need to partially drain the engine coolant to prevent coolant spillage.
  • Disconnect the negative battery cable.
  • Unplug the ECT.
  • Then, unscrew it.
  • Reverse the removal procedures to install the new part.
  • Connect the negative battery cable to the battery.









Nov 03, 2010 | 1995 Chevrolet Caprice Classic

2 Answers

Over heating


When your temperature gauge reaches "H' it may too late to prevent a major breakdown. Knowing the symptoms of an overheated car and how they occur may be the difference between being inconvenienced and incapacitated.
Identification:---Other than a low oil level or low oil pressure light, there is not a more significant part of a car's instrumentation than a rising temperature gauge or a glowing "Hot" light. These lights are really the only confirmation a driver has that his car is really overheating. It is the identification of the symptoms of an overheating car that enable the motorist to avert a badly damaged engine. Overheating is always a traumatic event for a car's engine, which makes the early identification of the symptom an important addition to the informed motorist's tool kit.
Stuck Thermostat:--The car's thermostat is a valve that controls coolant flow from the engine block to the radiator. When the engine is cold the thermostat remains closed so that the coolant can reach operating temperature quicker and also provide heat to the passenger's compartment. The thermostat has a spring on it that moves depending on coolant temperature causing the thermostat to open. Sometimes the thermostat fails to open thus restricting coolant flow to the radiator where it would be cooled down. This condition is often the cause of overheating. The symptoms of this cause would be a rising temperature gauge and possibly the loss of heat inside the car.
Restricted Radiator:---A car's radiator will have thousands of gallons of coolant passing through in its lifetime. Along with the coolant comes particulate matter in the form of corrosion breaking loose from various parts of the car's cooling system. These contaminates collect in the tubes of the radiator reducing its efficiency. Extensive "plugging" in the radiator will cause the car to overheat. The symptom of this condition would be a rising temperature gauge which goes up when you accelerate.
Coolant Loss:--A car's cooling system is a closed loop system. You are not supposed to lose coolant. Sufficient coolant loss will cause the engine to run hot because engine is heating less coolant to higher temperatures. The symptom of overheating induced by coolant loss would be a pool of coolant on the pavement when the leak is external. Steam under the hood as the lost coolant hits hot parts of the engine, or a rising temperature gauge in the case of a undetectable engine related leak. Of course, the gauge would also go up if the leaks were not detected. Deteriorated Water Pump:--Cars use a belt driven pump to push the water and coolant mixture through the cooling system. This part is called the water pump. Rarely the impeller that draws the coolant through the pump will rust away making it impossible to push any through the system. If this occurs the temperature gauge will climb and coolant will boil over in the radiator. Inoperable Fan:----Most cooling fans are electrically driven. Some are driven by fan belts. If a belt breaks or the electric supply to the fan is interrupted overheating may result. Electric fans are tuned on thermostatically when needed. When the car runs at idle for extended periods or the weather is extremely hot, a failed fan will cause overheating otherwise it serves as a standby assist to the rest of the cooling system. In stress conditions an inoperable fan will cause the temperature gauge to rise. This will help. Thanks please keep updated.please please do rate the solution positively .thank you for using fixya

Mar 19, 2010 | 2001 Hyundai Accent

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