99 vette ...wont start
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 35
Likes: 0
99 vette ...wont start
i got home today and i was trying to start my vette so i can get my 4 wheelers out....i opened driver side door and i can hear buzzing noice coming out of passenger side under dash maybe...first thing i did check my battery ..it shows it was way down low so i put charger on it and it would charge and go up to 13.8 then all off the sudden drop down to 9.1...do i have bad battery or there is something under the dash that i dont know about...when is seats around 13.8 i can go open driver side door and it would droop down to 9.1 which is not enough to start the car...any info will help...i hope its something stupid and easy to fix...thanx
Instructor
Joined: Mar 2007
Posts: 180
Likes: 1
I have heard there are a couple of ways to charge your battery.
>>> Connect the Positive from the Charger to the Positive Battery Terminal, then connect the Negative Charger clamp to an engine bolt or ground bolt.
>>> Remove the battery then charge.
>>> Connect the Positive from the Charger to the Positive Battery Terminal, then connect the Negative Charger clamp to an engine bolt or ground bolt.
>>> Remove the battery then charge.
Drifting
Joined: Jan 2005
Posts: 1,969
Likes: 202
From: Lyons Il
2023 C5 of the Year Finalist - Unmodified
99
I had an issue last spring when I thought my battery was bad. The car would not start at all. Normally it would "bump" but this time nothing. I started to hear a "click" undreneath the hood, I think. Since I was pretty confident that my battery was old, I removed it. I forgot, I tried jump starting it first. The clicking was still there even after I removed the battery. I was lucky enough to have an almost new battery at my disposal. Changing the battery eliminated the click, and the car started. To add to this I am not the guy who uses the battery tender. I start mine once a week in the winter instead. 
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Sounds like your battery went **** up. Drag it down to where you purchase you new battery and have it tested just to make sure that the battery is the real issue. The clicking that your hearing is most likely relays that are trying to turn on and dont have enough power to work correctly. There are several relays under the passengers side of the dash and a bunch inside the BCM that your hearing.
Sounds like you need a new battery.
When you install the battery cables on the battery, clean the connections well and inspect for corssion. The cable connection bolts need to be tightened to "11 ft/lbs" to be properly connected to the battery.
BC
Instructor
Joined: Aug 2008
Posts: 123
Likes: 0
From: Denton Texas
I'm sure that this is not your problem, however...
My '01 had a noise coming from the passenger seat. It turns out it was the seat control stuck in the "on" position. It ran the battery down. I had a new seat switch installed and no more battery problems.
Good luck.
My '01 had a noise coming from the passenger seat. It turns out it was the seat control stuck in the "on" position. It ran the battery down. I had a new seat switch installed and no more battery problems.
Good luck.
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