nimble

Well, I had to replace my cobalts cat at 80,000 because it was plugged. I also replaced my thermostat and had the coolant system flushed. For some reason my engine temp is mostly around 198-202 degrees. It's cold in illinois now and I'm afraid when it warms up my car is gonna really overheat. The thermostat was rated at 180 degrees so why is this thing heating up??? Also my gas mileage is about 25 miles city/highway. Any ideas???

Fonzi1289

That really doesnt sound that bad

NWAE Cobalt

iTrader: (1)

that sounds pretty normal...

shawn672

202 is not overheating, the engine is rated for like 218 or 220, the fans will never let you get above 210

if you're idling a lot in traffic or what not, yea it will hit upwards of 200-201

mrsilent13

dont worry...on the cobalts the fans kick on at 223.....202 is def not overheating....

nimble

Thanks guys. I didn't want to warp the aluminum head. It is a little durable engine though. Sure would like to super-charge it!

07cobaltguy

when i had a kinked hose my car would run at 230-240 engine dosent give you the over heat warning till 250

blackbolt89

my engine seems to run hotter in the winter. lol.

but it normally sits near 189 when moving. never lower and very rarely higher.

now stopped. hell it will hit 210 easy.

i drive around with the coolant temp on my DIC lol

CobaltKatsu

iTrader: (1)

yeah, thats normal. mine runs at like 197 all the time. so your fine

Nighthawk243

My G5 commonly ran 187, but would occasionaly peak to 207 at times. My LD2 Grand Am always ran 215-220.

My SS/SC always seems to run around 165.

xxxxsh4d0wxxxx

iTrader: (1)

Last summer I pegged 217°F

coopercharge

iTrader: (4)

Double check and make sure that there isnt any air bubbles in the system. would be my suggestion because they shouldnt be running that hot. It wont hurt it but that 180 thermostat should be kicking in. I would also check sometime they are bgad out of the box maybe the tstat has failed.

jonxxxedge1

mine hit 260 last month when my radiator broke. no light saying low coolant or saying it was overheating or anything.

xxxxsh4d0wxxxx

iTrader: (1)

That's fucked..

cobraceralt

last summmer my radiator got smahsed by a tire and i hit 271

jonxxxedge1

i know right? **** gm. i shouldent have to drive around with my coolant temp on

NWAE Cobalt

iTrader: (1)

i hit 232 on a dyno once...idiot forgot to turn on the fans and i topped 5th gear just for fun
btw, 7k rpm on the 2.2tranny is 162 mph

we let it sit and cool down

koch1ar

hahaha me too!! idk what happened engine just got to 200* (average), then i had 100yrds of idling in first. It jumped to 217* till I got my speed back up

Calibrah

My car sits at 189 while moving and the highest Ive seen was 210

That's why all cars should have a temperature gauge displayed at all times somewhere on the dash. I love gauges.

bluelight

My car NEVER went above 189 while moving and 210 while stopped in hot weather. I noticed one day that it was running in the 200-220s alot. Then My engine light came on and my gauge gave NO temp reading (said ---). Took it to the dealership and it was the thermastat. had it replaced and im back at 189.

It wouldnt hurt to get it checked. I only have 37K miles on my balt. BTW its coverd under drivetrain warrenty till 65K I think.

doubledamageXX

I put mine into a curb last year and jacked the radiator and didnt notice because 1 the only damage was to the lower front lip, and 2 there was so much snow on the ground that i woudnt have noticed liquid. I hate to say it i got you beat... 350 plus and blew the gasket and pretty much warped everything else.

Edit: lol yes im dumb, never had a car overheat, and wasnt sure how far i could take it, i made it home, and it started the next day, but not without every color of the "Im sick" rainbow coming out the back.