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Battery on 2010 G.S. about year old. Had to charge it after left for a month. Drove it all O.K. but exhaust never went to quiet mode even using mild to wild switch.
Next day put charger on ,it showed only 40% charged.
Would a malfunction in the exhaust cause a battery drain?
Or may be bad battery ?
Could be 2 problems battery plus exhaust Thanks 66racer
If you plan to let it sit for a month it must be on a charger. These cars have a lot of power draw to keep things alive. I would not go longer than a week or two max.
Roy
If you plan to let it sit for a month it must be on a charger. These cars have a lot of power draw to keep things alive. I would not go longer than a week or two max.
Roy
Plus to the OP: If the battery has been sucked down to some degree for a while, it will never take a full charge again. Get it load tested.
Battery on 2010 G.S. about year old. Had to charge it after left for a month. Drove it all O.K. but exhaust never went to quiet mode even using mild to wild switch.
Next day put charger on ,it showed only 40% charged.
Would a malfunction in the exhaust cause a battery drain?
Or may be bad battery ?
Could be 2 problems battery plus exhaust Thanks 66racer
Usually drive weekly so never used trickle charger.
Battery is bad,but now need to ck,out the exhaust 66racer Thanks
Battery on 2010 G.S. about year old. Had to charge it after left for a month. Drove it all O.K. but exhaust never went to quiet mode even using mild to wild switch.
Next day put charger on ,it showed only 40% charged.
Would a malfunction in the exhaust cause a battery drain?
Or may be bad battery ?
Could be 2 problems battery plus exhaust Thanks 66racer
66racer, I would think that they are two separate unrelated issues. I'd keep the battery on a charger and check out the connection to mild-to-wild.
Everybody's experience is different....buttttt, I have left my 2012 GS ( summer ) for up to 6 weeks , no battery tender....and it started up just fine.....I would not, and do not, do that in the winter, but I do think that the Corvette is no worse or better than any other heavily electronically loaded car today.....a battery tender will never hurt, but absolutely necessary ( summer ) probably not.
If you plan to let it sit for a month it must be on a charger. These cars have a lot of power draw to keep things alive. I would not go longer than a week or two max.
Roy
I routinely let mine sit without a tender for two weeks, especially in the winter, and haven't had a problem. Always is strong when I start it up. I bought the most powerful battery I could find though ... AutoZone Platinum AGM.
It is unlikely that your battery problem is related to the exhaust issue. The NPP valves are controlled by vacuum. If the valves are not closing, it indicates that there is no vacuum being applied to the pots. I would look for a cracked or disconnected vacuum line somewhere as the root cause of the valves never closing.
As said above, battery tender is needed. OM says car will likely last 2 weeks on charge but that won't be an issue with the tender.
Exhaust issue is unrelated to battery except that it may not be installed in the "no drain" configuration. Check their website to get wiring instructions. As for operation, check fuse (panel is in passenger floor well) and the battery in the MTW fob.
It is unlikely that your battery problem is related to the exhaust issue. The NPP valves are controlled by vacuum. If the valves are not closing, it indicates that there is no vacuum being applied to the pots. I would look for a cracked or disconnected vacuum line somewhere as the root cause of the valves never closing.
Garry
Also check the battery in the Mild 2 Wild remote. The light lit up in my remote but would not switch the valves. Put new battery in remote and everything worked as it should. Very
If you plan to let it sit for a month it must be on a charger. These cars have a lot of power draw to keep things alive. I would not go longer than a week or two max.
Roy
Week or two is a good rule of thumb but..........even if the unit starts after a couple of weeks the battery has suffered a loss of charge that must be replaced by the alternator. If your drives are short hops around town it will take a while to fully charge the battery since much of the alternators capacity is being used to run all the electrical systems (AC, lights, seat heaters, wipers, what have you) which diminishes the amount of current reaching the battery, so it takes longer than one might expect to fully charge the battery. It is possible the battery never gets to a full state of charge each short drive. Then its parked again for a week or two and the discharge is a little deeper next time out. This repeated cycling of the battery shortens the life considerably.
If my GS is parked at home more than 24 hours I plug the tender in.
Week or two is a good rule of thumb but..........even if the unit starts after a couple of weeks the battery has suffered a loss of charge that must be replaced by the alternator. If your drives are short hops around town it will take a while to fully charge the battery since much of the alternators capacity is being used to run all the electrical systems (AC, lights, seat heaters, wipers, what have you) which diminishes the amount of current reaching the battery, so it takes longer than one might expect to fully charge the battery. It is possible the battery never gets to a full state of charge each short drive. Then its parked again for a week or two and the discharge is a little deeper next time out. This repeated cycling of the battery shortens the life considerably.
If my GS is parked at home more than 24 hours I plug the tender in.
I always keep mine on a charger when I'm not driving it. Only takes a few seconds to connect and keeps the battery charged. I do drive my car weekly also.
My OEM battery was on the charger at least 95% of it's life from 2011 to 2015. Then one day the car would not start. Charger had a green light showing charged. Checked battery voltage and it would not go above 10.5VDC. I tried three chargers and all three said it was fully charged. New Duralast fixed the problem.
My rule of thumb with car batteries is....when in doubt, throw it out.
That's good basic advice!! ...with today's electronics, most cars simply will not even crank if the battery falls below a specific voltage...unlike the old days when they would "moan and groan" and try to start!
01-13-2016, 09:56 AM
Battery drain
