Engine coolant temp sensor and air conditioning problems!

[garyh80]

I have a 2007 cobalt 2.2 liter and I was wondering what this issue might be. The check engine light goes on, and my coolant temperature doesn't register. Along with the air conditioner not blowing out any cold air. This is very frustrating and I was wondering if anyone can give me some insight.

Thanks, Gary

[Rick.Mopar]

Yep I have the same Issues now and again, same exact trouble!!!!! I changed out the temp sensor, time will tell.

Gary, hook up a ODB scanner and see if you can see the temp on the scanner. On my car the temp sensor doesn't read anything but on the scanner I can read the temperature readout.