THIS ENGINE ALSO MISFIRES IN IDLE

1999 Hyundai Elantra

Tiny

2CarPros-Archives

November, 9, 2010 AT 12:35 AM

1999 Hyundai Elantra mileage: 110,000. This car idles fairly well in neutral or park but very rough in reverse and drive. I just replaced the engine with a used engine and it is doing the same things the old engine was doing. I replaced the plugs, wires, rotor button, cap, fuel injectors, set timing, etc. This engine also misfires in idle. I NEED HELP!

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1 Answer

Tiny

2CarPros-Archives

November, 9, 2010 AT 12:37 AM

Check the motor mounts; a broken mount will allow the engine to shake excessively. Your car is equipped with a computer controlled engine management system. An independent auto service center can scan your computer for fault or error codes. The information should pinpoint the mal functioning components.

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