Car will not start it ran perfectly yesterday?

Tiny
GOTTAKEEPMOVIN'
  • MEMBER
  • 2008 CHEVROLET COBALT
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 191,000 MILES
Parked car in garage last night with no issues. Car will not start this morning. Remote control will not work on locks, no interior lights whatsoever. Key is now stuck in ignition. Have not had a chance to tear into the trunk and measure the battery voltage yet, but it never gave an indication it was weak, so am doubting the battery somehow suddenly drained that quickly. The issue, therefore, is not one where I turn the wheel and the key frees up, that is not happening.
Just figured it out. Battery was down to three volts. As I tried to jump it, I noticed I had turned the light switch on (due to rainy weather) yesterday and assumed they would shut off automatically once the car was shut off, but obviously never went back to the garage the rest of the night! Charging battery now, key is free and as soon as she starts I will be on my way again! Thanks a million!
Tuesday, July 11th, 2017 AT 4:09 AM

51 Replies

Tiny
HARRY P
  • MECHANIC
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Umm you are welcome? Just an FYI, usually when a battery gets that weak over night, it is a light or something that was left on. Sometimes there is an electrical short that is drawing on the battery. Anyway, you got it fixed yourself. Nice work.
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Tuesday, July 11th, 2017 AT 5:40 AM
Tiny
GOTTAKEEPMOVIN'
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Yes indeed! As I thought about this more, I realized that I had an ABS code stored a couple weeks ago. It cleared itself (I think I got water in a sensor) after it dried out. Since then, my beeper does not work when I hit the lock button on my door (usually it dings twice to indicate it will lock after the door is shut). It still locks but the dinger is not dinging. So after remembering this I realized when the headlight switch is left on and the key is removed from the ignition, it should have beeped at me in fast mode to indicate my headlights were left on. This function is no longer working, thus my leaving the lights on last night, draining my battery. So, I am still in need of someone to help me figure out why my dinger quit dinging. Any ideas? Your help is greatly-appreciated, in advance!
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Tuesday, July 11th, 2017 AT 2:35 PM
Tiny
HARRY P
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I would think a blown fuse for the chime could cause that, but I do not see a fuse for that chime on ProDemand or ALLData. I would suggest checking the fuses. By chance have you noticed anything else that is not working? Also, some cars have an on-board computer that will allow you to change certain settings (like the chime sound). If your car has one, it is possible that you just turned it off by mistake. There might be some more useful information on that in your owner's manual.

Hopefully those ideas help. Let us know what you find.
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Tuesday, July 11th, 2017 AT 6:29 PM
Tiny
GOTTAKEEPMOVIN'
  • MEMBER
  • 41 POSTS
  • 2008 CHEVROLET COBALT
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 49,000 MILES
It is my understanding that there are a number of things that will stop the remote start function to cease working, such as a code stored form an engine check light. I recently had a tire blowout, and since I attempted to use fix-a-flat (despite the tire pressure monitor system manufacturer's warnings), the pressure monitor was intermittently working and did cause a light to come on with a message to check the TPMS status. Since then, the TPMS on that one wheel has been working flawlessly, yet the remote starter won't work. I am only assuming that the problem was caused by this particular code being stored. My question is "how do I trouble-shoot the remote start function from this point?" Is it as simple as clearing a stored code? I am also wondering if my local Autozone would loan me a code-checker device, such as the Tech 2?
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
FACTORYJACK
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Your local autozone is not going to have a Tech 2, it is a dealer item unless someone has purchased there own. I would try disconnecting the battery cables and shorting them together to clear all memory.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
GMTECH
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Definitely scanning for codes would be the way to go to make sure the proper part is replaced. I can say from experience that the hood latch has an ajar switch built into it that fails quite often. In some cases though I have seen some corroded wiring nearby to the latch.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
ELLEN51
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  • 1 POST
  • 2008 CHEVROLET COBALT
  • 67,000 MILES
Got stuck when key wouldn't turn in the ignition. Tried everything & the tow truck driver also tried before towing.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
DAN_K
  • MECHANIC
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Sometimes if the wheels are sharply turned and the steering wheel is locked, you can try turning the steering wheel just a little in the opposite direction and the key will turn. However, the tow-truck driver should have known and tried this. So it's probably a defective ignition key cylinder.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,640 POSTS
  • 2008 CHEVROLET COBALT
  • 1.3L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 345,555 MILES
Hi my engine doesn't not start, do you know what wrong?
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
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All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be tested during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.

Every engine requires spark, fuel and compression to run. That's what we have to look for.

These are the basics that need to be tested and will give us the info required to isolate a cause.

1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.

2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.

3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.

4) If all of these things check good, then you would need to do a complete compression test.

Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
KEN L
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Fantastic, thanks WRENCHTECH great answer.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
MELVINDOO92
  • MEMBER
  • 35 POSTS
  • 2008 CHEVROLET COBALT
This is the third or fourth time this has happened. The first few times the ignition locked up I played around with it for several minutes then it would pop lose. This time I have been messing with it for three and half hours and nothing. So far I have oiled the tumblers, turned the steering wheel back and fourth (which is now locked), and I made sure the car is in park. I'm about out of ideas so I was seeing if I could find some help online.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
FIXITMR
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Pretty well known ISSUE. Most likely lock cylinder. Dealer may replace for no charge.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
MELVINDOO92
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Is there any other thing that could be causing this.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
FIXITMR
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Nothing EASY.
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
MELVINDOO92
  • MEMBER
  • 35 POSTS
Nice
do you know where I can buy a lock cylinder.
Ive been lookin around online and it seems like these places never heard of a lock cylinder before
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
SHORTY774U2002
  • MEMBER
  • 3 POSTS
  • 2008 CHEVROLET COBALT
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 1,500 MILES
I recently have bought a 2008 chevy cobalt and sometimes I go to start the car and the car does not want to start. Its not the battery b/c everything else works on the vehicle the radio, the windshield wipers, the lights. I have taken it to the shop and they state that there is nothing wrong with the vehicle, then I took it to another shop and they stated that there was a code that showed up on the machine and did not give me further information on it. I just dont understand what it could be it is a 2008 it shouldnt be having these problems any suggestions on what it could be
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
MHPAUTOS
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Hi there,

It would be good to have this code as it may be a clue as to your problem, when you say it wont start, is it cranking over and not firing or is there no crank?

Mark (mhpautos)
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one a worn down key can cause your issue if its worn down try having a key cut from the vin number. If you have the key copied you will end up with a another worn out key. Also to find a cylinder if you dont want to get one from the dealer try www. Parts. Com
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Friday, August 9th, 2019 AT 11:48 AM (Merged)
Tiny
SHORTY774U2002
  • MEMBER
  • 3 POSTS
When I go to start it it sounds like my battery is dead but my lights turn on my windshield wipers work and my radio turns on its just the initial car wont start they said something about that the code was saying my car was getting enough fuel but yet they refused to do any work stated they would wait til my car did it again. And also I have taken it in b/c my dash lights and my radio light will turn off whenever they want and they seem to find nothing wrong with that either
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Friday, August 9th, 2019 AT 11:48 AM (Merged)

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