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C7 won’t start

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Old Aug 6, 2021 | 02:48 PM
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Default C7 won’t start

Hello all,

just came back from my two weeks vacation and reconnected my battery and drove my corvette c7 (2014) for about 2 hour. Came back and Parked it. Tried to start the car the next morning and it did not crank so I checked the battery and it was ok. Also check the starter and it was ok as well. Still trying to start the car but no luck. Some friend told me to check the oil and checked and there was nothing on the dipstick, now I am really concerned. As we also tried to turn the engine wheel with the tool manually but no luck on starting the car. I am seeing a flashing engine light when I am trying to start it. Any idea folks?
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Old Aug 6, 2021 | 02:58 PM
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Re-re connect the battery. Make sure the connections are FLAT and tight. Many times a "just connected battery" is the battery is not really properly connected.

Elmer
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Old Aug 6, 2021 | 03:05 PM
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Originally Posted by eboggs_jkvl
Re-re connect the battery. Make sure the connections are FLAT and tight. Many times a "just connected battery" is the battery is not really properly connected.

Elmer
Yep. Had the same thing happen. Didn't tighten all the connections as I thought I had. Lots of these threads coming up these days. My problem was the downstream positive post that appeared to be tight, but was not. Good luck.
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Old Aug 6, 2021 | 03:06 PM
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Thanks Elmer, I have reconnected the battery three times, no luck. Should I be worried about not having oil in the engine when trying to start it. I am not sure if that could be a reason.
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Old Aug 6, 2021 | 04:06 PM
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Originally Posted by Corvette_C7
Thanks Elmer, I have reconnected the battery three times, no luck. Should I be worried about not having oil in the engine when trying to start it. I am not sure if that could be a reason.

Well, what kind of oiling system do you have? A Z51 (Dry Sump) that sits a long time won't have oil on the dipstick. A non Z51 that only has around 7 qts, will give you an oil level at all times ( provided you have oil).

Elmer
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Old Aug 6, 2021 | 05:02 PM
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If that is the original battery in the 2014 Corvette, buy a new battery.



Last edited by c54u; Aug 6, 2021 at 05:04 PM.
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Old Aug 6, 2021 | 05:03 PM
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It is a z51 model. Not sure what to do next to try to start the car. Is there a safety system that prevents it from starting or Turing the engine manually
?
starter sims to be stuck when trying to start the car just some noise coming from the fuse box from the relay (rapid fast clicking noise) and a Quick flashing engine light, I am not sure what that translates into.

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Old Aug 6, 2021 | 05:07 PM
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@c54u Not the original battery but just bought it few months ago, would it make a difference?
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Old Aug 6, 2021 | 05:08 PM
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Fast clicking noise in my experience usually leads to a bad battery. You must have warranty left on the battery..take it back and have them load test it.
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Old Aug 6, 2021 | 05:11 PM
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@c54u Sure I’ll check again but keep in mind that this noise is not from starter it is from fuse box rely under the hod
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Old Aug 7, 2021 | 08:18 AM
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In my experience any clicking of any kind no matter where it is coming from is a relay being triggered. As the low amp side triggers the high amp side, there is not enough juice to complete the job.

Get a 100% verified, load tested and 100% for sure hooked up correct battery. You will be fine.
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Old Aug 7, 2021 | 08:27 AM
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Did you blow the 350A fuse on top of the battery?


Elmer
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Old Aug 7, 2021 | 08:59 AM
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Clean both surfaces of the terminals
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Old Aug 7, 2021 | 09:47 AM
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All of what you describe indicates either a bad battery or the battery not being connected properly. It is easy to think you have tightened down the battery connections, when in all reality you haven't (it is different on the vette than other cars, must be tightened firmly). If your battery is original it is time to replace it. I have had the same issue before with the same exact symptoms.
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Old Aug 8, 2021 | 03:35 PM
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@eboggs_jkvl No the fuse is ok
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Old Aug 8, 2021 | 03:38 PM
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No luck folks. Seems like very weak power going to the starter. But tried everything with no hope. Got new Battery and no start as well. I am not getting any crank. I’ll keep searching guys but thanks a lot for your help.
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Old Aug 8, 2021 | 06:08 PM
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I would check under the car to make sure the wires at the starter are securely attached to the starter and that there is no damage to the wiring.

As others have mentioned before, make sure your connections are securely fastened.
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Old May 1, 2023 | 12:24 PM
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Originally Posted by Corvette_C7
No luck folks. Seems like very weak power going to the starter. But tried everything with no hope. Got new Battery and no start as well. I am not getting any crank. I’ll keep searching guys but thanks a lot for your help.
did you figure this out? What was it?
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Old May 1, 2023 | 12:36 PM
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The little black wire on the (-) post. Might have come off during new battery installation.
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Old May 1, 2023 | 06:43 PM
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Why don’t you want to have someone check it out?
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