So last monday after sitting for the weekend i get in the blazer start it get about a block and a half and it dies just like it ran out of fuel but all of a sudden. Won't restart, tried putting fuel in it and nothing. That night I checked for spark and swear i didn't see anything. Charge the battery over night and it starts fine. Drive the car to work for a couple days. Then comes today where i try to start it after its been sitting a few days and it won't. Right now I have a charger on it and am betting it will start with a full charge, but we'll see. Now to me this sounds like the coil is going out and can only provide spark when the battery is fully charged. What does it sound like to everyone else?

Bad Coil? Ignition Module?

It's a 99 blazer w/ the 4.3 vortec V6 and an automatic.


Thanks everybody.

 

u could be right but another thing is that u didnt really say how far the battery went down was it actually like dead or just a little bit down cuz the truck wont start if the battery is dead and that seems to make sense but then u say theres no spark well thats a whole different thing i guess but this is just another thing that it could be hopefully this helps if not sry

 

there's something screwy about the contacts (i've had at least 1 issue with each one of the three chevy midsizes i've had) on the battery sometimes, especially with side mounts. The conduit itself may be falling out. I had a s-10 that when i went to go take the battery out to charge it the conduit stuck right on the bolt and popped right out. Spilled acid on everything and had to rush to the store so they could dispose of it properly.

 

The '99-'02 ACDelcos are known to corrode the positive battery post. The post comes off inside the battery and can be a problem like Border mentioned. The only way to verify is to take the cable off. There is no outside visual indication the post has corroded away.

To me, it sounds like your positive battery post is about to fall out. The engine dieing, no start, and then start when you wiggle the battery connection. It all adds up to a fualty positive post. Carefull of that batery acid, it might not show right away, however it WILL eat holes in your clothes. Buy a can of acid nuetralizer at your autoparts store to clean up the acid in the engine compartment. Wear rubber gloves and goggles, and your crappiest clothes, or pay someone to replace it for you...

 

Forget buying acid neutralizer, mix up some baking soda and water. It will neutralize acid.

 

The thing is the battery is charged and turns over fine, plenty of cranking power. It won't start though. Cranks but won't catch and run.

 

Car didn't start after charging the battery. I'm going to replace the coil and maybe the ignition module tommorow and see what happens. Sound plausible that it will start?

 

What is the latest news?

 

it can be a starter relay i had that problem with my cavalier the battery was new but it wouldnt start but if you stuck a screw driver and sparked the pos and neg on the starter it will start right up and it was the relay that went