Hi, I have a 2000 S10 with a 4.3 Vortec, it also has the EDI ignition. The problem is that it will not start after sitting overnight. It turns over fine, just will not start. If I let it sit till late morning it will eventally start. It seems to be temperature related. I have found that when it will not start there is no power to the 12v wire at the coil. I have hooked a meter to this wire and monitored it while trying to start it, and it will show no voltage unless I repeatedly try the starter in short bursts, then suddenly the voltage shows up and it fires. I cannot find a wireing diagram that shows where the voltage should come from, or what could prevent it. Once it is started it starts and runs the rest of the day, and I mean it runs like a bear, no missing, nothing. I really need to figure out as I have to scramble for a vehicle to get to work every morning that it does not start.

Thank you for any input

Mike

The pink wire runs from the ignition switch through a fuse to the ignition coil.

The pink wire runs from the ignition switch through a fuse to the ignition coil.
Thank you for the reply.So would this lead me to think that I possibly have a bad Ignition switch?

again thank you

Mike

Could be ignition switch, or it could be a poor connection anywhere from the switch to the fuse, to the coil.

Could be ignition switch, or it could be a poor connection anywhere from the switch to the fuse, to the coil.


Awesome finally I am getting somewhere. To confirm, there is no sensor, relay, ect. between the switch and the coil, other than what you stated. This confirms what I suspected, but I could not find a diagram to look at.

I really appreciate you helping me!

Thanx

Mike

its usually the wire connector that runs to the ignition switch in the steering column - i believe there is a tsb about that for your year.

Well I finally was able to put the new ignition switch in Saturday. (yesterday) I had purchased it earlier in the week but needed a weekend to do it. I am happy to say you guys were right on the money. The truck started instantly this morning! Thank you very much, you guys rock!

Special thanks to Old_Master for the file you sent me, that is a very handy item!

Keep up the great work guys we need you!

Mike

Glad we could help you get her running. If any other problems pop up, come back and see us again.