Car would stop running while driving it and wouldn't start after that; changed the alternator and now it will start but it doesn't stay running. It stalls every time I try to put it in gear to drive it.

  • Can you rev the engine freely while in neutral – method Jan 17 '16 at 14:30
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    Did you do the work, or did a shop? This is typical behavior for an engine with a large vacuum leak. Once load is applies, the engine dies. You may take a look to see if any this is amiss which should be connected to the intake manifold such as the brake booster hose. – Pᴀᴜʟsᴛᴇʀ2 Jan 17 '16 at 15:00

Is the check engine light on? A relatively common failure is the crank shaft position sensor which can cause the car to die while driving. As well as hard starting/No start. IIRC the alternator on a Hyundai 4 cylinder is typically on the exhaust side of the engine near the radiator. So it may be safe to assume that the vacuum hoses are untouched.

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