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1984 C4 does not start

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Old Sep 25, 2023 | 08:05 AM
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Default 1984 C4 does not start

I have a problem with my 1984 C4.

About three months ago, I had a new battery installed because the old one did not hold its charge anymore. Back then, I was still able to jump start the engine with a jump start kit though.
The car was running fine with the new battery until now. I had not driven the car for about 2 weeks. When I tried to start it yesterday, there was nothing. Even the jump start kit did not bring the battery back to life. It is completely dead.

I am starting to think there is a loose connection or a drain somewhere that keeps draining the battery, This one was brand-new and should not have problems so soon.

Is this a common problem with C4's of that age? Could it be an easy fix? I don't want to put too much money into this car, even though it only has 97,000 miles.

Thanks in advance for any help and information!
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Old Sep 25, 2023 | 12:57 PM
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From: Clifton Park, NY ............Clearwater, FL ... 85 Original Owner
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Originally Posted by SC_VetteOwner
I have a problem with my 1984 C4.

About three months ago, I had a new battery installed because the old one did not hold its charge anymore. Back then, I was still able to jump start the engine with a jump start kit though.
The car was running fine with the new battery until now. I had not driven the car for about 2 weeks. When I tried to start it yesterday, there was nothing. Even the jump start kit did not bring the battery back to life. It is completely dead.

I am starting to think there is a loose connection or a drain somewhere that keeps draining the battery, This one was brand-new and should not have problems so soon.

Is this a common problem with C4's of that age? Could it be an easy fix? I don't want to put too much money into this car, even though it only has 97,000 miles.

Thanks in advance for any help and information!
charge the battery to full to start with to get it going
then pull the CTSY fuse for the heck of it and see if any improvement
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Old Sep 25, 2023 | 01:41 PM
  #3  
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From: Wabasha Mn
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Originally Posted by SC_VetteOwner
I have a problem with my 1984 C4.

About three months ago, I had a new battery installed because the old one did not hold its charge anymore. Back then, I was still able to jump start the engine with a jump start kit though.
The car was running fine with the new battery until now. I had not driven the car for about 2 weeks. When I tried to start it yesterday, there was nothing. Even the jump start kit did not bring the battery back to life. It is completely dead.

I am starting to think there is a loose connection or a drain somewhere that keeps draining the battery, This one was brand-new and should not have problems so soon.

Is this a common problem with C4's of that age? Could it be an easy fix? I don't want to put too much money into this car, even though it only has 97,000 miles.

Thanks in advance for any help and information!
Until you find your electrical problem it might be a good idea to install a battery disconnect switch or just disconnect one of the battery cables when you are done driving your C4.
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Old Feb 3, 2025 | 11:55 PM
  #4  
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Firstly can you get your battery capacity checked? You can get a dud new battery.
Then if the battery load test conforms its good, check the current load to try and identify what is causing excessive drain. There are plenty of YouTube tutorials on how to check for battery drain, pull the fuses and check one by one. Simple stuff like an antenna that looks retracted, can have the motor engage every few seconds. That i have come across in my car, would flatten the battery in several hours just happened to hear the antenna motor click every so often...
Also once a battery goes completely flat some never recover, them may show 12 volts but cannot hold a load like even the headlights for a few minutes. That is a simple quick test if you do not have access to a battery load tester, charge the battery overnight then connect and put headlights on see if the volts drops. A good battery will not be affected with 15 or 20 minutes of lights on engine off. However if you see the voltage dropping rapidly you know your battery is no good. A 600CCA battery won't be affected by a hundred watts of lights, a starter motor will draw a hundred amps or more. Try cranking it with fuel fuse removed, you will quickly run out of patience before the battery reserve gets affected....

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