I have a 1998 Chevy S10 pick up, have a starting problem. Just all at once would not work. Checked the battery, was good, checked voltage at starter was a good 12 1/2 volts, checked the clutch swith-was good, checked the starter switch also was good, checked starter itself, still won't start. Any ideas?

test and check battery--battery terminals especially positive --starter

Did you check your battery voltage? Try to jump the vehicle with another vehicle that is running fine? It takes less battery power to light up bulbs in the dash than it does to crank your engine.

I think you have a bad connection or bad starter relay

check fusible link also check for power at starter first..make sure trigger wire is good at starter

check starter fuse link and alternator fuse link and check ignition fuse and PCM fuse

You need to take it for a Starter Draw test. This will show how much juice the starter needs to spin. Autozone and Oreillys will test for free.

If the starter tests good, have your battery voltage checked. On Ford products the batteries need to be fully charged which is about 13.2 - 13.4 Volts. Ford products have sensitive Antitheft sytems and when the Battery voltage drops to a predetermined level, the Theft system cuts the starter voltage down to 6- 7 Volts making it difficult to start.

Once you get these tests you will know whats going on. If the starter tests good you may have to connect a Voltmeter to the big cable down at the starter. Then have someone crank the engine and see how much Voltage is at the starter. If you have another battery at 13.2- 13.4 Volts just swap for a test and see what happens.

I'm assuming that you verified that the distributor is rotating. Verify that you have good secondary wires. verify that your pimary circuit is good.

check ur relays and fuses to see if that fixes ur issue

Yes it could well possibly be the ignition switch or starter solenoid or intermittent ignition switch starter contact.Again check connections on battery especially the ground connection at the block.Also there could be air in the fuel line any of these could be hindering start up!

If all cables and battery check out....make sure you have a good ground. If that is all good you need to check if you are getting battery voltage down to the solenoid with the key in the start position. If not most likely it's the ignition switch...if voltage is ok check connections at starter and again make sure ground is good. You should see battery voltage at the solenoid when the key is in the start position....at the battery cable and the smaller wire on the solenoid. If all checks out and still no-start...you need a starter.