Well I've noticed lately through my instrument centre computer my coolent temps are getting higher and higher! Now they normaly run about 87celcius to 91 even when I push her.. But today just sitting idle in the shade she went up to 105celcius and kept going up till I started driving

Now you can't tell me thats normal cause hell last summer she barely hit 100c!! And today when I was out was lucky if it was +10c and there was a cool wind to boot I'm going to check all here fluids etc tomorrow morning b4 I do anything but I know I'm not burning or leaking anything soo..

I have been running Lucas fuel treatment and that will now discontinue till I figure out is wrong.. Maybe I baby my car to much?? Oh and I'm running a 2.4L if anyone has any ideas? thanks

 

Didnt your rad fans come on.
Im not sure though at what temp there suppose to come on.

 

Thats normal!!!

I've seen 223-225 Farenheit before the fans come on when sitting still idling, at a drive-thru or such. 105C converts to 221F according to my covnersions program, so you are fine. As long as it goes back down when driving, or the fans come on when it gets over that, then you are fine.

 

My coolant temps will go above 200 degrees if I'm idling in traffic... I don't like it... but this car does run at a high temperature... just the way it is.

Here's a tip though... if you see your coolant temps getting up there... turn on the A/C for 5 mins and watch the temp drop. Turning on the A/C activates the secondary cooling fan.

 

turning on the heat will pull all the excess hot air out also

 

That is in fact normal. A car sitting still at idle is when it gets the hottest. Radiators depend on air flow for cooling.

 

Ok thanks everyone.. I just think its odd its doing that now is all.. I do think I may stop using Lucas fuel treatment though just to see if that makes a difference, I'll keep you updated..

 

Royal purple "Purple Ice" reduces coolant temps

 

X2

 

normal, I'm running 80+ c on highways. I will go up to 90s when I sit in traffic.

 

Hey I've had this happen to me only once in the lifetime of my Cobalt. It was pretty bad rush hour traffic inching slowly towards a bridge. My coolant temps went up to about 104-105 degrees Celsius, then I think the radiator fan turned on because it started dropping steadily to 88 and then balanced back out at 90.

I don't think it's anything to worry about.

 

HEHE mine doesn't go above 196 at idle....but yes, the heater works crazy good if you waiting to do a pass down the drag strip, put it on high and those temps will drop crazy fast

 

Not only that the car will run hotter when idling nowaday because a higher temp burns the fuel better making less emissions...