tobias_lorenz77
Cobalt temperature gauge issues
Summary of the thread
The 2010 Chevy Cobalt is experiencing erratic temperature gauge readings, a persistent check engine light, and slow engine warm-up. These issues could be related to a restricted cooling grille, but more likely involve a faulty sensor or cooling system malfunction. Checking the coolant level, radiator fan operation, and the cooling fan fuse are suggested steps. Ultimately, professional diagnosis is recommended to accurately identify and resolve the problem.
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4 comment(s)
tobias_lorenz77 (community.author)
Thanks for the advice! Coolant level is good, but I'm not sure about the radiator fan or the fuse. Where exactly would I find the fuse for the cooling fan? I'm not the most mechanically inclined, haha.
marafire9
The fuse box is usually located under the hood, often near the battery, or sometimes inside the car near the steering wheel. Check your owner's manual; it should have a diagram that shows which fuse controls the cooling fan. But honestly, with those symptoms and the mileage, there could be a few things going on. It might be worth taking it to a workshop to get it properly diagnosed. Could be a faulty sensor in addition to the cooling issues.
tobias_lorenz77 (community.author)
Okay, I think I'll take your advice and bring it in. I was really hoping it was just a fuse, but I don't want to risk messing something up even worse. It was a fuse which cost me 52€ to get replaced. Thanks again for the help!
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CHEVROLET
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COBALT
marafire9
That's a strange combo of symptoms. A restricted cooling grille could potentially cause some overheating issues, but it wouldn't directly explain the incorrect temperature readings. Have you checked the coolant level? Also, is your radiator fan kicking on when the engine gets warm? It's also worth looking at the fuse for the cooling fan, if it has one. If that's gone, it might explain the slow warm-up as well as the temp issues.