2006 chevy impala ss 115,000 miles runs hot,fluid in reservoir boiling


Asked by Aug 11, 2015 at 03:02 PM about the 2006 Chevrolet Impala SS

Question type: Maintenance & Repair

temperature gauge go up past normal settings. engine begins to get hot. overflow tank is
bubbling. fluid overflows from reservoir when vehicle is turned off and parked.

4 Answers


Are your cooling fans operating?, is your water pump operating? is your thermostat opening? these are the thing you will need to look into that may be causing the car to over heat.


I would also check out the radiator, when did you last flush the system? Could be bad fins.


This is called heat soaking. It may be a symptom of a worn timing chain. But pressure test the cooling system and be sure there's no air in the cooling system before we condemn the timing chain. If your engine has a valve tap the knock sensor may be picking up the sound and severely retarding the ignition timing. You'd also be experiencing loss of power and possible late transmission shifting. HTH. -Jim


Whatever happened to the "maintenance free timing chain " auto manufacturers love to advertise? It's marketing bullshit and let me tell you, when your timing chain fails, it will disable your car and you immediately, sometimes causing partial or complete engine failure. Yes, there are some warning signs like excessively noise, but, really, how many people are going to pay attention to this with all of the other sounds they hear in their cars. There's noise from the engine, road, window leaks, etc. If you really think that your timing chain is almost done, it's time to sell the car. And, at 115,000 miles on a domestic car, that's a lot of miles. This is why I think in many ways it's easier to manage a timing belt. There's a set schedule for replacement of the belt and once it's done, your car will be running in top condition. The timing chain can also stretch over time and decrease your performance. Look, it's more expensive generally to replace the timing chain and much more difficult, increased labor even if you do it yourself. SO, if you determine that you have to put almost $2,000 in your car, will you keep it?

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