Join Date: Jul 2019
Location: Copperas Cove, Texas
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Hi Martin....I will answer your post with a series of questions to hopefully help you out.
1. At any time did your check engine light come on? It sounds like the shaking your talking about was due to engine misfires. With engine misfires your check engine light will not stay on. It turns itself off after so many key cycles and misfires the PCM records.
If your check engine light is or was on take the car back to the Hyundai dealership and tell them to check for DTC (diagnostic trouble codes)chances are you have misfire codes stored in the vehicle DTC history that can be cleared and then the technician must "reset adaptive values". If a Hyundai Tech is working on your car then he will know what that term means.
2. Are you sure you connected all of the electrical connectors on the top of the ignition coils to ensure good contact?
3. Have you checked the engine oil level to make sure the dealer did not overfill your crank case?
with 150,000 miles I will assume a major engine tune up has never been done....
- replace spark plug ignition coils as the Elantra's are notorious for these not lasting long.
- have the dealer conduct an EFI (electronic fuel injection) service to completely clean out your fuel system
- check and replace your engine air filter if needed, if the engine is starved for air it can limit throttle response.
- at 150,000 miles I would consider a complete timing job....timing chains, timing tensioner and timing guide....generally these parts should be replaced about every 50 miles or so depending on how hard you drive the car. Most people don't worry about this because of how expensive and complex the job is. It's important for your engine life not to ignore this.
Best of luck...send me a message if you have any more questions or need help.
2019 Hyundai Elantra 2.0
1994 Nissan Sentra SE-R SR20DE
"Train your people for success when they leave, treat them so they won't want to"