Coolant

10

Asked by Jun 10, 2016 at 06:40 AM about the 2008 Chevrolet Cobalt LS Sedan FWD

Question type: Maintenance & Repair

I have a Chevy cobalt (2008) a few weeks ago i
was some what low on antifreeze so i not even a
half cup of water in just till i got antifreeze i try to
flush system but i dnt kno how but i did get all the
antifreeze out the rezovoir.. and added 50 50
supertect... But my car seems to slowly rise in
temp to bout 235 I think I hear a fan kick on but 5
sec later  I hear pressure kick off....no idea what's
going on...I'm kinda worried but no lights are on I
have no leaks I do need oil change...any advice??

2 Answers

14,775

Check for air in the coolant system. It actually isn't hard to remove air bubbles if that is the case. Remove the radiator cap (when cool) and start the engine turn the defroster on fully with the heat all the way up, let it run and circulate the air out as the thermostat opens fully.it The dealer said that 220 is normal "hot" when vehicle is stationary. Should run on average from 189-192 during driving.

Best Answer Mark helpful
10

Yea it round that when driving but sitting...how do I drain then a antifreeze in radiator

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