My s10 blazer won't turn over w/o having to jump it 1st. Try to turn the key and voltmeter shows nothing. There's no click click click so guess that's a good sign. However, once I jump it, I let it run for about 10-15 mins in the driveway. thinking maybe the battery needs to be re-charged. Once it's done running for a little bit, I turn it off then turn the key again w/o starting it. And have some voltage. Here's the tricky part: Same day I did this, let it sat for several hours then went out to try and start it again. Nothing.
I turned the alt by hand...sounds good, no squeaks. So guessing the alt is still ok. Perhaps the battery I bought earlier before summertime isn't holding a charge??
Help/ideas/suggestions. (I'll take some voltage tests with my dmm in the afternoon and post up results.)
'97 4 dr. Tahoe
Polk Audio MM6501
Wolfram amps 3000.1, 125.4 coming soon
2 Sundown Audio X 15's Tuned @ 30Hz.
Interstate battery/Royal Excelene/KnuKoncepts Kolossus wiring