Check Coolant/Radiator light on, but car has coolant?

[TheTSiGuy]

My colliseum/lincolns memorial/Circus Cage light is on!

No idea though, as I've verified that there is supple amount of coolant in the system. No leaks anywhere. Any reason the sensor would go off? its been kind of odd lately, as it would only come on when i hit boost, and went WOT up till redline. Kind of like my shift light!

Dont know though, as its on all the time now. Is there a possibility the sensor is old and crusty and staying on all the time? any fix?

Thanks guys!

 

[WhiteCloud]

What is your coolant temp like?

 

[steve]

The sensor in in the bottom of the coolant overflow tank and because the crap settles to the bottom it will get gummed up over time. I pulled mine and washed and flushed out the tank to free it up and so I could see the level. It took lots of hot water to disolve the stuff that settles to free it up.

So, make sure you overflow tank is filled to the hot line and make sure the wire isn't loose and grounding somewhere.

Steve

 

[TheTSiGuy]

I dont have a logger, but judging by the stock guage, normal. Most of the time, it even stays a needle length below the middle. Im stumped. Im pretty sure im not hurting the car?

 

[Defiant]

You feel and hear an overheated car before damage is done. First, the car starts running better than you've ever felt in your life. Then, you start hearing pinging- nothing drastic, but if you give it gas, you hear it. Then you think to look at the temperature gauge and crap yourself, just as you dive for the shoulder in a blind panic. If you catch it at this point, everything will be fine.

As for your light coming on, check for crud in the overflow tank, and make sure it's half-full when cold.

 

[blackNboosted]

I've had this problem also......did exactly what Steve said. Pull your overflow resevoir, wash it out and shake it up and down. The floater is probably stuck to the bottom of the bottle.

Dave