Question about 2005 Chevrolet Impala

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Temperature gauge pegs out at 260 and the fans are not working

How do I repair the problem

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Check under the hood in the fuse block for the fan relay maybe bad; if not run two wires from the battery to the plug on fans to see if they work and replace as need.

Posted on Nov 20, 2008

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I have a 1996 chevy lumina and the temperature gauge keeps moving around unpredictably. The fans wont come on. We checked the fuses and relay switch. Could it be the fan motor, or temperature gauge


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I have Envoy 2005. While my car is parked, not turned on, the Temperature Gauge is staying at level higher than 260. Can I change the Temperature Gauge alone, or i have to change the Instrument Panel?


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Oct 20, 2011 | 2004 GMC Envoy

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1991 Chevrolet cavalier 2.2 auto Changed radiator, temperature switch, coolant sensor, thermostat, thermostat outlet housing adapter, gaskets. Gauge still shows running hot.. Max at 260-redline, But no...


The first hing I would do is confirm the engine temp with a scan tool. If the scan tool is reading a normal temp, 200 to 220 degrees with the fan coming on at around 220 degreese, and the gauge us reading much higher than the gauge is most likely bad. If the fans are not coming on than you need to look into that. Fuses, relays, wiring, fan motors would be the basic things to check. If you need more help with figuring out the fans let me know. If the fans are coming on, the temp gauge is reading the same as the scan tool data that there are a couple of possibilities. Either the system has air in it from nepot being properly bled or the headgket is bad forcing air into the system. Air will cause the cooling system to lock up. If you are try ing seeing the temp gauge spike to 260 degreese the head gasket is likely to have or will fail soon. Like I said if you have any further questions let me know and I'll be happy to help.

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I Have a 1997 Pontiac Grand Prix, For months now my temperature gauge has been running hot to nearly 260 degrees. The car has never officially overheated although the fans do kick in, In the last few...


What's chances that the temperature gauge or sender itself is wrong?
Is the heat exceptionally hot? What temperature is the heater dicharge when the gauge reads 260?
I think that the sender is not expensive, try that. An auto parts store could get you an inexpensive dial gauge that you might be able to install in place of the sender.
Gary

Aug 02, 2011 | Pontiac Grand Prix Cars & Trucks

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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

1 Answer

Cooling fan problem


The electric fans on some vehicles dont stay on all the time. If the radiator is not burningyou then i would suspect the guage is bad. The engine would throw a code if the fan was not working properly, so im pretty sure that your fan is working properly. I hope that helps you out.

Nov 21, 2008 | 2005 Chevrolet Impala

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