replacing my battery?
Thread Starter
Racer
Joined: Nov 2010
Posts: 309
Likes: 0
From: Springdale South Carolina
replacing my battery?
Hello, looks like the battery in my 1991 is getting weak. I remeber a long time ago a 9 volt plug in cigaarette thing that would hold a charge for the computor, stereo etc to allow changing the battery so you would not have to reset everything. Anyone know if this is still avalible or will I need to reset everything when i swap out the batteries? Guess im going to look at the manuals as well as advice here.
Thanks, Drew the newbie to my 1991 corvette.
Thanks, Drew the newbie to my 1991 corvette.
Le Mans Master
Joined: Jun 2009
Posts: 6,528
Likes: 752
From: South Dakota
They are still available and they work. I got one at Walmart a couple of years ago. I don't remember the price, but it think it was only about $5.
On the other hand, resetting the radio presets and clock is not that tough. I am not sure if there is anything else that will need resetting.
On the other hand, resetting the radio presets and clock is not that tough. I am not sure if there is anything else that will need resetting.
Race Director
Joined: Oct 2005
Posts: 11,772
Likes: 177
From: Rolla Missouri
2021 C4 of the Year - Unmodified Finalist
St. Jude Donor '10 thru '25
The only thing you'll lose is the radio presets and clock.
The computer will be just fine.
But as mentioned, just about any auto parts store along with Wal Mart will have those little plug in batteries for your cigarette lighter socket.
The computer will be just fine.
But as mentioned, just about any auto parts store along with Wal Mart will have those little plug in batteries for your cigarette lighter socket.
Melting Slicks
Joined: May 2007
Posts: 2,075
Likes: 109
From: Longmont Co
If you are a newb, here's the scoop on changing the battery. Remove the top bolts holding the plastic panel next to the battery. Then three or four in the tire well. Loosen a single bolt at the bottom of the panel. Pull the panel off, remove the battery hold down and disconnect the + and -, pull the battery out from the side.
Burning Brakes
Joined: May 2004
Posts: 1,201
Likes: 2
From: Frederick Md
NOT WANTING to hijack this thread..BUT I have always thought the Computer had to relearn your "driving style" if it was disconnected.. Maybe I'm just having another senior moment but when I re-connect the battery I always have a leaf foot for a day or so when I pull away from a stop sign etc...I did this with my 95 until I traded it in for a new 98 and have done it on the 88 35th ANC I purchased a few years ago...
Oh well if its a myth its ok because my method is FUN anyway
Bob G.
64 72 & 98 Convertibles
76 79 and 35th ANC 88 Coupes
Oh well if its a myth its ok because my method is FUN anyway
Bob G.
64 72 & 98 Convertibles
76 79 and 35th ANC 88 Coupes
Le Mans Master
Joined: Jan 2008
Posts: 7,030
Likes: 10
From: Edmonton, Alberta
If you are a newb, here's the scoop on changing the battery. Remove the top bolts holding the plastic panel next to the battery. Then three or four in the tire well. Loosen a single bolt at the bottom of the panel but DO NOT REMOVE Pull the panel off, remove the battery hold down and disconnect the + and -, pull the battery out from the side.
and a helpful hint
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Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
When you disconnect power to the ECM all the error codes are erased and the BLMs are reset to a default value (120) which is fairly close to the "ideal" 128 (for 14.7 AFR). The BLMs are then adjusted by the ECM as you drive. They are only adjusted when the ECM is in closed loop mode (engine hot). That's the "learning" part.