car problem need help !!!!!!
Burning Brakes
Joined: Jun 2005
Posts: 1,244
Likes: 2
From: TX
Originally Posted by Ta-taaa
The battey does only have a little over 11 Volts.
When voltage is low, some things will work, others won't. You have to get good voltage b4 you move on to other possibilities like security problems.
Team Owner
Joined: May 2001
Posts: 25,057
Likes: 1,265
From: Virginia
St. Jude Donor '11
Originally Posted by angel71rs
That is too low, should be at least 12v, closer to 12.5. Have the battery charged/checked at autozone. If it's ok, have the alternator checked.
When voltage is low, some things will work, others won't. You have to get good voltage b4 you move on to other possibilities like security problems.
When voltage is low, some things will work, others won't. You have to get good voltage b4 you move on to other possibilities like security problems.
on all of the above
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by angel71rs
That is too low, should be at least 12v, closer to 12.5. Have the battery charged/checked at autozone. If it's ok, have the alternator checked.
When voltage is low, some things will work, others won't. You have to get good voltage b4 you move on to other possibilities like security problems.
When voltage is low, some things will work, others won't. You have to get good voltage b4 you move on to other possibilities like security problems.
Race Director
Joined: Oct 2004
Posts: 13,597
Likes: 1,353
From: Home of the VOLS ! Knoxville, TN. Tennessee
St. Jude Donor '11-'12-'13, '15, '16-'17-'18-'19
sounds like your security system has locked you out .
A couple of times this past couple of months my car did the same thing . had all the power , but would not even turn over . I would pull the key out , then try again , and it would start . had not done it in a while now after i cleaned my key contacts with alcohol .
Do you have a spare key to try ?
something may have gotten in the ingnition switch keeping it form seeing the key chip .
maybe a long shot , but why not try to disconnect the battery for a hour or so and see if the the car will reset .
good luck
A couple of times this past couple of months my car did the same thing . had all the power , but would not even turn over . I would pull the key out , then try again , and it would start . had not done it in a while now after i cleaned my key contacts with alcohol .
Do you have a spare key to try ?
something may have gotten in the ingnition switch keeping it form seeing the key chip .
maybe a long shot , but why not try to disconnect the battery for a hour or so and see if the the car will reset .
good luck
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by corvettezman
sounds like your security system has locked you out .
A couple of times this past couple of months my car did the same thing . had all the power , but would not even turn over . I would pull the key out , then try again , and it would start . had not done it in a while now after i cleaned my key contacts with alcohol .
Do you have a spare key to try ?
something may have gotten in the ingnition switch keeping it form seeing the key chip .
maybe a long shot , but why not try to disconnect the battery for a hour or so and see if the the car will reset .
good luck
A couple of times this past couple of months my car did the same thing . had all the power , but would not even turn over . I would pull the key out , then try again , and it would start . had not done it in a while now after i cleaned my key contacts with alcohol .
Do you have a spare key to try ?
something may have gotten in the ingnition switch keeping it form seeing the key chip .
maybe a long shot , but why not try to disconnect the battery for a hour or so and see if the the car will reset .
good luck
Racer
Joined: Oct 2006
Posts: 396
Likes: 1
From: Anderson South Carolina
Im new to this board but I have had this same problem before and it was a security issue, car would start perfect a 1000 times and then get in once and it wouldnt start. All of my interior lights would come on, radio would play, dash gauges would light up but I would turn the key and get nothing.
Try this...its worked a few times...try starting the car and when it does nothing turn the key back to the off position and wait about three mintues and then try turning the key again. I dont know the techincal reason as to why this happens or even how to stop it. I had a 96 camaro that use to do the same thing all the time. Its only happened once in my vette. Hope this helps.
Try this...its worked a few times...try starting the car and when it does nothing turn the key back to the off position and wait about three mintues and then try turning the key again. I dont know the techincal reason as to why this happens or even how to stop it. I had a 96 camaro that use to do the same thing all the time. Its only happened once in my vette. Hope this helps.
Le Mans Master
Joined: Feb 2002
Posts: 6,937
Likes: 21
From: Waldorf MD
11.4 volts is a completely discharged battery.
Lead acid batteries are made up of cells. Each cell is approximately 2 volts, so a 12-volt battery has 6 individual cells. It turns out that a fully charged 2-volt cell has a voltage of approximately 2.15 volts. Oddly enough, a fully discharged 2-volt cell has a voltage of 1.9 volts. That’s only a difference of 0.25 volts on each cell from fully charged to fully discharged. So a 12-volt battery will measure at about 12.9 volts when it’s fully charged and about 11.4 volts when it is fully discharged. That’s a total of 1.5 volts that represents the full range of charge on a 12-volt battery.
Did you try to jump the car? If jumping starts it, you have a bad battery. C5s don't like low battery voltage, the computer does strange things.
Lead acid batteries are made up of cells. Each cell is approximately 2 volts, so a 12-volt battery has 6 individual cells. It turns out that a fully charged 2-volt cell has a voltage of approximately 2.15 volts. Oddly enough, a fully discharged 2-volt cell has a voltage of 1.9 volts. That’s only a difference of 0.25 volts on each cell from fully charged to fully discharged. So a 12-volt battery will measure at about 12.9 volts when it’s fully charged and about 11.4 volts when it is fully discharged. That’s a total of 1.5 volts that represents the full range of charge on a 12-volt battery.
Did you try to jump the car? If jumping starts it, you have a bad battery. C5s don't like low battery voltage, the computer does strange things.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by Gonzo
Do you have any kind of electrical mod, i.e CLB, or window valet??
Have you tryed charging the battery???
Have you tryed charging the battery???
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by jasons0147
Im new to this board but I have had this same problem before and it was a security issue, car would start perfect a 1000 times and then get in once and it wouldnt start. All of my interior lights would come on, radio would play, dash gauges would light up but I would turn the key and get nothing.
Try this...its worked a few times...try starting the car and when it does nothing turn the key back to the off position and wait about three mintues and then try turning the key again. I dont know the techincal reason as to why this happens or even how to stop it. I had a 96 camaro that use to do the same thing all the time. Its only happened once in my vette. Hope this helps.
Try this...its worked a few times...try starting the car and when it does nothing turn the key back to the off position and wait about three mintues and then try turning the key again. I dont know the techincal reason as to why this happens or even how to stop it. I had a 96 camaro that use to do the same thing all the time. Its only happened once in my vette. Hope this helps.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by Oldvetter
11.4 volts is a completely discharged battery.
Lead acid batteries are made up of cells. Each cell is approximately 2 volts, so a 12-volt battery has 6 individual cells. It turns out that a fully charged 2-volt cell has a voltage of approximately 2.15 volts. Oddly enough, a fully discharged 2-volt cell has a voltage of 1.9 volts. That’s only a difference of 0.25 volts on each cell from fully charged to fully discharged. So a 12-volt battery will measure at about 12.9 volts when it’s fully charged and about 11.4 volts when it is fully discharged. That’s a total of 1.5 volts that represents the full range of charge on a 12-volt battery.
Did you try to jump the car? If jumping starts it, you have a bad battery. C5s don't like low battery voltage, the computer does strange things.
Lead acid batteries are made up of cells. Each cell is approximately 2 volts, so a 12-volt battery has 6 individual cells. It turns out that a fully charged 2-volt cell has a voltage of approximately 2.15 volts. Oddly enough, a fully discharged 2-volt cell has a voltage of 1.9 volts. That’s only a difference of 0.25 volts on each cell from fully charged to fully discharged. So a 12-volt battery will measure at about 12.9 volts when it’s fully charged and about 11.4 volts when it is fully discharged. That’s a total of 1.5 volts that represents the full range of charge on a 12-volt battery.
Did you try to jump the car? If jumping starts it, you have a bad battery. C5s don't like low battery voltage, the computer does strange things.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
ok news update i took the battery to advance had it tested and charged nothing wrong with the battery.put it back in the car hooked it up turned the key and it cranked hard like it had jumped timing then finally started ran fine for maybe 1 minute then cut back off.and went back to the way it was before not even a noise when turning the key and the under the hood light went out as well as the courtesy lights and while it was running i was still unable to get to check my codes it wouldnt let me.so is it a bcm,pcm or security issue? maybe the computer just took a crap and wont let the car run? any ideas?
Le Mans Master
Joined: Jan 2003
Posts: 6,059
Likes: 12
From: AKA Harvey Mushman-I know just enough to be dangerous "Those who sacrifice liberty for safety deserve neither"- B. Franklin
Senior Member
Cruise-In V Veteran
That last post makes me think that you might have an issue with the battery cable(s). Can you have a helper jiggle the cables as you try to start it? I've had similiar problems with much simpler cars.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by madeouttaglass
That last post makes me think that you might have an issue with the battery cable(s). Can you have a helper jiggle the cables as you try to start it? I've had similiar problems with much simpler cars.
Drifting
Joined: Aug 2005
Posts: 1,757
Likes: 5
From: Peterborough, Ontario
3 items
Heh bud it sounds like a shorted starter motor....but the battery voltage is too low as stated above...age of battery is not relevant....try other battery ....easiest elimination....pull all fuses install one at a time, any strange issues???? the clicking is the solenoids pulling in and dropping out because the battery voltage is so low....starter next but it's much tougher try taking the cable off the feed to the starter motor and all fuses....first see if everything else works one simple step at a time....
Bst of luck
Bst of luck
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by Ian Black
Heh bud it sounds like a shorted starter motor....but the battery voltage is too low as stated above...age of battery is not relevant....try other battery ....easiest elimination....pull all fuses install one at a time, any strange issues???? the clicking is the solenoids pulling in and dropping out because the battery voltage is so low....starter next but it's much tougher try taking the cable off the feed to the starter motor and all fuses....first see if everything else works one simple step at a time....
Bst of luck
Bst of luck
Drifting
Joined: Jul 2004
Posts: 1,571
Likes: 1
From: Hollywood Md
Rikk, I know you checked them, but check G104 again. It's the ground next to the inboard side of the battery. Take it apart, clean and reassemble it. If that doesn't fix it, my guess is that the PCM is either fried or corroded. A trip to the dealer may be your only recourse
.
.
Thread Starter
Le Mans Master
Joined: Dec 2005
Posts: 6,460
Likes: 16
From: hamilton alabama
Originally Posted by cenzo
Rikk, I know you checked them, but check G104 again. It's the ground next to the inboard side of the battery. Take it apart, clean and reassemble it. If that doesn't fix it, my guess is that the PCM is either fried or corroded. A trip to the dealer may be your only recourse .
.
