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2007 Saturn ion temp gauge stays on cool ac doesn't work as well either

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For the gauge, replace the thermostat. For the A/C it could be low on freon. Parts stores will put freon in for you. Use at least one can with dye in it. If it goes low again fast. A garage can find the leak.

Posted on Mar 22, 2016


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I have a 2007 Saturn Relay. The cooling fan motors only work when the AC is on, the van overheats otherwise.

Please observe your fans. Are both fans working when your ac is on? And when the ac is off, both fans are not working. Or maybe there is just one fan working on either on or off ac? Depending upon these conditions, possible culprits are the fuse, fan relay1, connectors, and ecm signal ?

Jun 30, 2018 | Saturn Cars & Trucks

1 Answer

2000 saturn SW2 temp gauge is not working

Purge air out of cooling system / Replace sending unit in block.

Apr 17, 2013 | 2000 Saturn SW2

1 Answer

Temperature sensing

There should be two sensors - one for the computer and one for the gauge. Are you working on the right one ? Can you ground the sensor plug and make the gauge move ?
Is the engine warming up ?

Jul 23, 2012 | 2006 Saturn ION

1 Answer

I have a 2007 Saturn ION 2. I've already had the cam performance sensor replaced. Now something is causing the temperature gauge to malfunction. (Won't move, and then, it kicks up - to normal) The A/C...

Did you have a specific engine code requiring replacement of the Cam Position Sensor?
Did you recently replace the thermostat or run low on coolant or have some other cooling system work done? The temperature sensor can be bad, or simply have a loose wire connection. Check those. There can be air in the coolant system as well. Finally, the thermostat could be sticking and will need to be replaced.

These issues have nothing to do with the Air Conditioner. However, the AC will not cool if the car is sitting still unless the condenser fans (electric) are running. Turn on the AC and check to ensure the cooling fans energize.

Most of these items you can check yourself, however if not, then have your mechanic or a mechanically inclined family member or friend check them for you.

Best regards,


Feb 06, 2018 | 2007 Saturn ION-2 Quad Coupe

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