2007 cobalt

10

Asked by May 26, 2019 at 01:28 PM about the 2007 Chevrolet Cobalt

Question type: Maintenance & Repair

Hi everyone.  Not to beat a dead horse but....
I just had repairs done due to overheating.  It went
over 240, smoke etc..
While driving yesterday I noticed temp on rapid
rise. Ie..in 1/2 mile went from ~80° to 140° . Am I
overreacting?? Is this ok to drive and watch to see
if it goes over 220?
Thanks
Christina

6 Answers

30

Normal operating temp is ~190-200 degrees. There is a thermostatically controlled valve that stops coolant from circulating through the radiator until the engine reaches 190 degrees. Temp should rise quickly and then slow way down at about 180-195. Over 200 degrees you are overheating.

1 people found this helpful.
9,045

Overheating after repairs is often air trapped in the cooling system. it can be challenging to get the air out but it has to be done. Might require a shop with the proper equipment to do it. Money well spent.

1 people found this helpful.
30

If there is air trapped in the system, you should be able to take care of that without a shop.With the engine cold and not running, remove the radiator cap and top it off if needed. Leave the cap off and start the engine. Allow it to reach operating temp ~190 degrees and add coolant if the level in the radiator drops. Never open the cap on a hot or running engine, the system is under pressure and near boiling point. The other option is to allow the vehicle to do the work for you. No need to touch the radiator cap this way. Make sure the expansion tank (some people call it a reservoir but it is not a true reservoir) is full of coolant (to the line) then start the engine, let it get to operating temp above 195 then turn it off and allow it to cool completely. Repeat several times checking occasionally to see if the level in the expansion tank has dropped and refill as needed.

1 people found this helpful.
114,095

Your Cobalt needs to reach operating temperature within 9 minutes from a cold start up. If not the computer will set a trouble code and the check engine light will come on. So the rapid rise in temperature in the beginning is normal as long as the gauge settles in at around 195 degrees Fahrenheit. It's also not uncommon for the gauge to creep up to about the 220 degrees Fahrenheit mark if you're stuck in traffic in the summertime with the air conditioning on. If the gauge is rising past the 220 mark under those conditions or if you're driving and it goes beyond the 200 to 210 mark, something is going on that needs to be looked at! Hope that helps! Jim

1 people found this helpful.
10

Thank you so much. I feel much safer

1 people found this helpful.
114,095

You're welcome. Glad to help! Jim

Your Answer:

Cobalt

Looking for a Used Cobalt in your area?

CarGurus has 166 nationwide Cobalt listings starting at $4,299.

Postal Code:

Chevrolet Cobalt Experts

  • #1
    munron
    Reputation
    3,240
  • #2
    John Carson
    Reputation
    1,330
  • #3
    MoGo
    Reputation
    1,280
View All

Find great deals from top-rated dealersTM

Search

Related Models For Sale

Used Ford Mustang
59 Great Deals out of 1,882 listings starting at $3,900
Used Chevrolet Malibu
41 Great Deals out of 2,707 listings starting at $3,495
Used Honda Civic
146 Great Deals out of 6,372 listings starting at $1,295
Used Ford Focus
52 Great Deals out of 1,988 listings starting at $1,999
Used Chevrolet Impala
30 Great Deals out of 786 listings starting at $2,000
Used Ford Fiesta
15 Great Deals out of 488 listings starting at $2,900
Used Dodge Charger
30 Great Deals out of 813 listings starting at $3,500
Used Subaru Impreza WRX
4 Great Deals out of 65 listings starting at $5,995
Used Chevrolet Corvette
18 Great Deals out of 893 listings starting at $9,880
Used Honda Civic Coupe
27 Great Deals out of 915 listings starting at $1,800
Used Honda Accord
50 Great Deals out of 2,156 listings starting at $2,995

Used Cars for Sale

2008 Chevrolet Cobalt For Sale
25 listings starting at $4,299

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.