Join Date: Jul 2019
Location: Copperas Cove, Texas
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Hi Alex...what's the code? I can research it for you at work, give you some possible fixes. What type of plugs did you install? Hyundai's are real sketchy with plugs like champion and autolite....recommend NGK all day.
Question: When you start the car in the morning when the engine is cold do you hear any abnormal noises at start up? Does your tachometer work at start up immediately? Also, aftermarket parts such as cam and crank sensors are also sketchy with Hyundai....maybe not so much on the older models like yours.
How is your maintenance history? How frequent are your oil changes? It would be worth sticking a scope under the oil cap to see if your engine is sludged up. Aso worth pulling your oil control valves and check for sludge or metal particles. Good luck.
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"