i just said that.....thats what ur saposed to do not a/c

 

My friend turns on the heat when his car overheats and it works for him. Ive never tried it but he told me that the engine blows the hot air into the car.
I think that you are wrong about my Cavelier. Its a 2000 and it shouldnt heat up to 3/4 of the gauge and keep getting hotter. There is something wrong with my car. One of my red lights turns on in my car once in a while and its a picture of an oil leak or sumtin like that. Theres a lot of things wrong with my car (ABS light, brake light, E Brake dont work, 3 door handles instead of 4, trunk thats tied down...) and i dont care enough to get it fixed. Im gonna sell it and hopefully il get 2k when i fix some of the problems.

 

My car used to get up to 225 all the time, but after I got my exhaust I have yet to see it above 218.

 

215 is not too high... i believe the cooling fans kick on at 230..; you have nothing to worry about, it's pretty normal...

 

alright thanks everyone ill stop looking at it

 

stop?

 

eh?

.... now that i think about it, the cooling fan comes on when you run the air conditioning. technically, the a/c heats up the motor.... but as a preventative measure that fan cools things down.

makes sense now

 

Is it really that bad in a black car? Will it be so much worse than a blue one because I know I want black but I dont wana sit in a car that is a moving heater with leather seats...

 

I have black. I was debating black or blue also. It's not that bad at all just black attracks more sunlight therefore COULD cause the car to overheat/ be hotter inside the car. If you like black more than blue, I'd definately get black.

 

You're NOT overheating
The factory cooling fan logic for the LSJ is as follows:

The PCM commands Low Speed Fans ON (both fans 1/2 speed) 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 PCM commands High Speed Fans ON (both fans full speed) under the following conditions:
• ECT reaches 110°C (230°F).
• A/C refrigerant pressure exceeds 1 655 kPa (240 psi).
• When certain DTCs set

It will overshoot slightly but basically your peak NORMAL operating temperature should be approx 230F

Wop

 

The thing I don't like about the cobalt is that the variance in temperature can prematurely wear out engine parts.

I mean we're talking about a jump between 190 or so to 225, if that's happening all day long, think of what it's doing to the oil and engine parts. That's a 35 degree variance that's going on every 10 minutes or so. I know why they did it. (to save the fan) But I don't think it can be very good for longevity. Especially with the way some of us drive. hehe.

 

Yeah, like ppl have said already...crank the heat...it help...A/C will bring on more heat and load on the engine. Also you could get a thermostat that opens a lil earlier but make sure u dun get one that opens too early especially if your car goes thru harsh winters. Also....check the coolant levels. I'm using Motul coolant and its doing its job...don't think it runs cooler but I might get a cooler thermostat down the road. Also, I hear BMW coolant is pretty good but you I'm sure OEM will suffice.

 

You people are crazy. running 230tmp on an all aluminum engine is just asking for problems.... I don't care what anyone says that's looking to warp ****.

anyway if ur engine is overheating and you turn your a/c on and it cools down, check your cooling fan fuses and such. Hell just run your car sitting there with the hood open and check and make sure your fan turns on.

Yes most cars have a separate fan or turn the fan on when ur a/c comes on. That's why when u turn ur heater on and such your car cools down. It doesn't have anything to do with pumping heat outta ur motor. It's just your fan is running more often or you have a fan running all the time.

 

you could always wire a switch to manuallyl turn on the fans...that way u can have the fan on whenever.

 

The car has a heater core, almost like a secondary radiator, which it blows air through on its way into the car. That's why it cools off the engine.

The first thing I would do is check to see if your cooling fan comes on. That's a common failure on Cavaliers (both my mom's and my g/f had it fail at some point). If you notice the temp rising a *lot* at lights and *only* going down when you're moving, you likely have a bad fan. (estimate about $200-300 to replace, incl. labor)

 

It does get pretty hot in the car itself but a good tint job will take care of a lot of the heat issues... but, the car is black and will retain heat anyway so it will be hotter(inside the car) than say a silver one. I use a window shade if I park outside ALL the time. So if you like burning your hands when you get in I would suggest you get a good tint and a window shade.

 

as long as u arent running at that high temp for a long period of time (at a track or racing), you will be fine. the engine can handle spurts of that heat.