I went out this evening to get something to eat and was driving for about 5 minutes and got in line. i noticed that my car was running at 203 degrees. so i shut it off until i have to move in line and the try and get back home quick. on the way the temperature got to 208 before i got it off. probably taking it to the dealer tomorrow. any ideas, i took off the plastic valve cover the other day but don't think that this would cause the car to over heat.
any ideas on what the problem might be?

 

IT'S FINE

/thread.

 

mines gone up to 212 while sitting still once I got moving it fell to 19? almost instantly no big deal.

^ what he said .../thread

 

agreed. close thread..mine stock got up there too..once i got my injen...at most it gets up to 190..and thats rare..usually will just stay at 185

 

the cooling system in the cobalt is based on movement. so it's not unusal and nothing to worry about if you see high temps, especially while sitting in traffic, or parked, or doing something like going through a drive through. completely normal. the temps will start going down once you start moving again.

 

i live in tx..mine goes to 212 all the time if im just sitting... traffic and 5spd with our garbage @$$ dfco will do that.

 

WTF does the 5 speed and DFCO have to do with this? That bullshit traffic: Stop go stop go stop go stop go stop stop stop ok go, is the problem. The highest I've ever gotten is 199 degrees.

 

get modded, get tuned, turn the fans on sooner, and use purple ice -- I rarely see 190

 

My dealer told me that the cobalt uses a special radiator fluid that only they sell.... Any truth to this statement? I highly doubt it....

 

cuz when im in traffic i dont shift much and i stay in gear and its usually upper 2ks to 3k and the dfco is really slow so it gets hotter more than normal

 

my fluid was from walmart and works great. there idiots and is untrue.

To the op, you can is fine till 240ish. 208 is normal even on the cool side

 

208 is fine, the car doesnt even care about 208, thats still warming up.

The ECM commands Low Speed Fans ON under the following conditions:

• Engine coolant temperature (ECT) exceeds approximately 106°C (223°F).

• A/C refrigerant pressure exceeds 1 310 kPa (190 psi).

• After the vehicle is shut off, the ECT at key-off is greater than 140°C (284°F) and system voltage is more than 12 volts. The fans will stay on for approximately 3 minutes.

The ECM commands High Speed Fans ON under the following conditions:

• ECT reaches 110°C (230°F).

• A/C refrigerant pressure exceeds 1 655 kPa (240 psi).

• When certain DTCs set

 

OH NOEZ

When I turn my key...this thing happens underneath the hood, and and and, the RPM guage starts to move...



208 is perfectly fine.

 

I cn just imagine your chin quivering as you tell the big bad service advisor at the dealership this story.

 

ya ive seen mine get up to 219 when we were at the track its fine when drivin tho usly its 189

 

yeah I recently took my car in for that and it's normal. Mine went up to 223 and they said it's fine. My car isn't tuned right ( long story) and I need to get that going .

 

Yeah i didn't think so. And yes they are idiots for trying to make people believe that..

 

when I was at the track this weekend the radiator didn't "open" until 219* when it would drop it back down to around 190*. you will be fine.

 

QTF I hit 212 doing mad stop and go. I usually average around 190.

 

i figure ill finally reply. thanks for the polite help guys i appreciate those who gave me a straight answer. i know i freaked a little but im applying for jobs right now and its my only way to get around so i just got worried for nothing.

 

don't worry about it

there is nothing wrong with being a little concerned about an abnormality with your car

not caring is worse

 

once the addition of my injen cai, it brought down temps real nice

 

dont really mean to get off topic but i just bought oil pres and oil temp gauges and need to find away to install them but as you know we have internal oil filters and not threads to screw on the adapter to mount the sending unit anyone have any help for me fast please

 

The pressure gauge is relatively easy there are at least 3 or 4 oil ports that most people can access pretty easily.

The oil temp gauge is gonna be trickier, you pretty much gonna have to drill into your oil pan.. Cheap to replace if you mess up, or need the hole gone someday, but hard to make sure you dont get any metal bits in the crankcase/ Drill your oil filter housing, easy enough to do, easier to make sure no metal bits get inside engine, but it you mess up or need the hole to go away...you need a block. You could also gt creative and install the sensor(assuming its an electric gauge) into your oil filter cap....NO chance of getting debris in engine if your careful, and very inexpensive if you mess up or need to go back to stock. Just takes a few extra parts(a small harnees needs to be made, or quick connects need to be used for mechanical oil pressure) and a little extra time to change the oil. you CAN NOT install a mechanical oil temp gauge this way though. only electric oil temp and mech or elec oil pressure.

 

ya mine is electrical and i found port holes for my oil press gauge in my head its a metric allen key i jusst need to by a mk16 12 adapter bolt to fit and im gonna sell the oil temp an get air fuel