My 2007 Impala LS says its overheating shut off A/C the temp gauge goes all the way up then in an instant comes back down to normal

Engine Temperature Issue - Please Help! - Mazda 6 Forums : Mazda 6 ...

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Sep 12, 2011 - Join Date: Mar 2006 ... to the gauge) and then after being shut off for 5 minutes, show COLD. ... I'll also confirm, with my AP, that my ECT is around 200 like it normally is. .... VSS, and ECT signals and calculate radiator's heat the radiation ... I noticed my engine temp needle was dipping down and then came ... CEL - Throwing code P0126 (Insufficient Coolant Temperature ...
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Temperature gauge going up and down - CarGurus

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CarGurusAug 20, 2014 - Also as my temperature gage rises but car does not overheat. ... tempneedle gets up towards the red mark while you're driving, then yes, ... i have a 2006Pontiac Grand prix and my temp. goes up to the ... crzgrl637 answered 6 months ago ...the cooling fans won't kick on then you will see gauge over heat.

Car Engine Overheating - Causes and Symptoms of Over ...

Make sure the electric fan is working I have a simple fix for that on U Tube. Most of these are caused by the sensor and Then the Ignition will also cause this problem These cares are very Hi Tech but simple to do easy fixes on them.

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

You need a new gauge panel. Very common problem with these cars. There are people that can repair them like new.

Hello,

You problem sounds like a "Blend Door" issue, you have these doors that open & close and everything in between to adjust air temp. These doors have a "peg" that is connected to an arm or wire just like on a ten speed bike to shift gears, that peg may have broken off.

Another issue may be a stuck open thermostat, if you have a temp gauge is it running at normal temp? If the thermostat is stuck open then heat may become an issue.

I have found several 2007 Chevrolet Impala blend door issues here in fixya.com.

Hope this helps.

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

Does the car have a normal oil level on the dipstick? The behavior is consistent with a broken timing belt except for the part about the temperature gauge going to the top which would indicate overheating or a faulty gauge.

Yes thermostat slow to open not the worst of overheating problem's Good luck with your fix. Cheer's

Did you purge the air out of the syst.? Also you replaced the fan but are they coming on? have you checked the fuses and relays? if all this is ok then is the computer comanding it on? Is the computer getting correct info from Eng coolant temp. snsr (ECT)

change the thermostat and the temp gauge in the radiator