I love my 1999 S10 Blazer. We've been through everything together. Ive never missed an oil change or maintenance check. But suddenly ive been having problems starting it in the morning.
I thought it was the battery so i took it in to be tested. The guy told me the battery was still good but my car still isn't starting. I tested it with a voltage meter and upon hooking up jumper cables my battery dropped from 12v to 4v.
My alternater also seems fine but i haven taken it in to be checked. Something is obviously drawing an extensive amount power upon start. Any ideas on what it could be??? Please help!
Thank you, Mars

 

Are you saying that it dropped from 12v to 4v when you were turning the key to start it? And is it actually turning over, just not cranking or is it not turning at all?

 

I still think it is your battery
most places are using high tech battery testers and IMO are terribly unreliable

I prefer using a carbon pile tester

Does it start with boost ?

 

Yes when i tried turning the key. And it wont turn over it just clicks.

 

Yes it does, and its fine throughout the day. Its just in the morning it has a hard time. I wish it would test bad so i could get a new one under the warranty.