Question about 2008 Chevrolet Hhr

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Cooling fan does not come on

2008 HHR 1800 miles temp is running around 198. have not heard or seen the fan come on. when should the fan come on.

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Probably 198-210F, or anywhere in between. If your in a cold climate right now It may not even need the fan to cool the return yet. Keep an eye on gauge just in case, and if it climbs too high for your liking, then have it checked. Try turning on defrost & see what comes on, if AC has separate fan , it should come on, if not the other should.

Posted on Jan 01, 2009

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My 2008 hhr ss temperature goes from 196 to 210 on the road. Can I drive 1001 miles? While driving the coolant system goes down and then goes up when it's parked. Is it good or bad idea?


I'm fairly sure what you described is normal operation.
The thermostat opens at 195-197 degrees and the radiator fan kicks on around 225 degrees. So the normal range is between those numbers. And the coolant tank would rise when you turn the engine off because it stops flowing.
As long as the temp stays under 220 and you are not losing coolant you should be ok.

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How long does it run after shut off?Does it shut off at all or just run forever? If it ends up shuting off at some point after shut off, then I wouldnt worry to much bout it. The fan will run until the temperature sensor tells the computer that your engine is cool enough whether car is off or not. If it never shuts off then that'd be different : ) can honestly say I haven't seen that b4 but I'd say start at the temp sensor chk for voltage readings and see if they are within specs for your vehicle. Maybe sending constant signal to computer. Hope this helps you out.

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My car temp gauge showed over heating at highway speed. Then upper rad hose blew. Pulled over and had car towed home. I have a Matco tools code reader. Computer doesn't show any codes. Why would that...


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are you sure the cooling fans are working?
Is the coolant temp gauge telling the truth?
have you lifted the hood and heard the coolant bubbling into the overflow?
Or heard the tinging sound of a red hot engine?
If he did a liquid test with the dye,and it changed colors it should have changed very fast,
Another thing to think about if he was to take the fan belt off,and pull the thermostat housing off,and removed the thermostat,Now pour coolant into the thermostat hole to almost the top,Now start the car and see which side the bubbles come from,left or right,that will be the gasket that is leaking not both.

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