95 dodge neon, i just replaced the battery, and brain box (computer box) it started up then a few hours later tried it and now all it does is make a weird sound not a clicking like a starter would but a...
Darn, just sold my '95 neon. I never had to bother with the electronics, it always worked. That da da noise sounds like must come from some relay. Come to think of it, Chrysler makes had a kind of "main relay" called the Auto Shutdown Relay or ASD relay. It's purpose was as a main relay for sending power to necessary things to keep the engine running-like power to the ignition coil, and power to the fuel injectors, and to the fuel pump. This relay is triggered or controlled by the computer.
If you have a relay chattering and it is not a bad relay, then could also be a poor positive battery connection, or even a poor ground too. If that chattering sound is from the starter solenoid (on the starter motor), then you either have a weak battery or a poor connection ... or a bad solenoid.
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