Jenny05

Okay I have a long list of problems that are making me want to pull my hair out and trash my car. If anyone can help or have had the same problems please let me know.
It's a 2006 cobalt ss supercharged
In summer temps car runs 210-220+ until I have to get off the road. It spews coolant when you push on it. It will run through a bottle of coolant in a week easily. I am using dexacool
Winter time it's running 150-170 and still spewing coolant. (Maybe the thermostat sticking?)
My coolant is getting milky so I fear a headgasket problem arriving but the oil is not milky.
The car sputters or idles odd most of the time now.
Yesterday the entire car just shut off and the battery was completely dead it wouldn't crank over

I have no leaks on the ground or anything. If anyone knows what these various problems are it'd help me tons. Should I trash the car or put the money into it

ItalianJoe1

iTrader: (10)

You have a couple problems, needs to be properly diagnosed. Sounds like you have a block that is cracked from the coolant usage and overheating.

The shutting off issue should be unrelated.

Depends on what you want from the car as to whether you should fix it or not. You won't get much for it selling it in bad shape, but right now the cheapest option may be to get a good used engine and pop it in there to get the car running right.

Jenny05

The car hasn't overheated passed 220 so idk how it'd cause any problems with the block

Whitnith

iTrader: (2)

Did you buy the car used, or are you the first owner? Any mods?

BankerBalt

220 is normal. coolant spewing, you'll have to find the leak unless it is internally screwed. have you looked under your car after it sitting for a while? maybe you should put some dye in

Jenny05

Yeah I got it used there's a quite a few mods. There's no leaks on the ground no coolant in the oil just oil getting to the coolant now.

BlackLsCoupe

iTrader: (4)

first off headgasket is most likely the cause of coolant and oil mixing, as well as it spewing, id get that replaced ASAP.

second the age of your car most likely the battery being past 5 years that its bad and you should get it tested.

Jenny05

I figured it would be the headgasket but I didn't know about the temp changing and loosing the coolant or where it's be going

insylem

Maybe its evaporating? Or getting into the engine and getting burned in combustion and going out the exhaust?

thedubsack85

Sounds like you have some serious issues.. id have it compression tested as well as a leak down test. Coolant should not be combustible which could be your idle issue but that's most likely going to be a dirty MAF... Sounds like a head gasket for sure so the tests ive mentioned are to rule out any other serious issues.. How many miles and have you have replaced the thermostat/had a coolant flush? Is there any smoke coming out of the exhaust?

Jenny05

It's been compression tested but I may get tooth of those done this weekend. It has 79k on the car. It hasn't been replaced but the gaskets for it have. It smokes on start up sometimes

turbosmart4

iTrader: (18)

Yep, ill go w head gasket too.... Have u drained the oil completely to see if there is coolant there or r u just pulling the dipstick out

Jenny05

Sooooo I had my friend do it and he said the headgasket is fine so now I'm really confused to what it could even be

Hockeyman

iTrader: (4)

If your headgasket is fine, the block could have cracked like Joe said.

Jenny05

Ill see what I can get done with it. When you mash the throttle it'll start sputtering and the other day in a small pull the entire car shut off and battery was dead. I know a decent amount about my cars but nothing like this lol thanks for all the help so far guys

Jenny05

Still no progress wasn't the block.

thedubsack85

Well it's one thing or another... You cant have milky coolant with out a H/G issue. You had a friend test the H/G is he used to the LSJ?

SalvageBaltSS

iTrader: (13)

just replace the head gasket, and see what happens.

cobaltss#01

iTrader: (4)

If nothing is cracked maybe the head or the block are warped from the heat.