2006 Chevrolet Cobalt Questions

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My car started losing power intermittently so I had the fuel pump changed. The problem still persists and now my car doesn't start up right away. It usually takes 2 turns of the ignition to start up.

I just bought an '06 Chevy Cobalt. And it has been doing really good when the engine is still cold. But after driving for awhile and the car gets hot it starts dying on me. When I stop and idle. And even when I go to slow down. When it dies I put it in park and turn it off. It fires right back up and dies again before I can even get it in drive. I need help! The guy I bought it from is a mechanic and he has been looking for the problem for almost a week and it still isn't fixed. Any suggestions would be greatly appreciated...

When I raise the hood up I can hear but I never cut off it just keep running and in the car waste a lot of gas

All lights and radio come on battery is good can you please help

If im going down interstate at 65 or 70 and let off the gas pedal it will slow to like 55 in no time

I've been replying and can't get my message across. I had to report you to spam!! Please remove me from your mailing list: thank you very much.

My 2006 Cobalt won't start every time when it's warm outside but starts every time when it's cool outside. I have to sit there and keep trying every few minutes and it will finally start. It did this last summer too.

I replaced the passenger headlight with a brand new one and the directional light is out after a few days and now my drivers side headlight is out now. So I think that theres something electrical wrong. What do I do and How much will it cost to fix?

Its making a sound (if you put a card in a bike tire and ride it, that sound it makes) thats the sound its making. It was running okay just making that sound... today as i'm driving, it wont switch gears its just redlines the whole time and the sound gets louder and worse and then when i step on the gas it does nothing and has no power through the gas pedal at all but i have power on everything else... My check engine light is on.. Help?!?!?

The first time it happened the car would not turn on at a gas station, it then turned on and I was able to drive a few feet to a friends house before the engine disabled. I had to get it towed home. I took it to the shop they said it was the battery. Car was fine for a month (weather was cool).
It kept happening and I kept charging the battery. I then took it the shop because they felt it was the alternator. nothing wrong with the alternator or battery. Then I noticed that the issue seem to happen during the hot part of the day. And after I stopped during stop signs and traffic. I also notice the temp of the car is warmer. And the mechanic had said that he could not read the codes cause the ecm switch was blown. He replaced the fuse and it turned on but it happened again. this time I noticed I didn't have to charge the car for the check engine light to go off. It just had to be nice and cool. Like night time or early morning.
I am taking in but is it worth it? Am I wasting my money?