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2004 Sonata Squealing, rough idle, stalling


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zlee1976
New User

Jul 15, 2017, 5:05 PM

Post #1 of 2 (2275 views)
2004 Sonata Squealing, rough idle, stalling Sign In

My 16 yo daughter has a 2004 Sonata 2.4 L as her first car and after driving it for a couple of months we are having a lot of general trouble with it. There is a very loud squealing sound when it starts up that goes away after it idles for a bit. It has difficulty accelerating occasionally but not always. We discovered that it accelerates better when the A/C is off. It also shakes when it idles and stalls occasionally at stop lights. I have checked the fluids, air filter, and replaced the spark plugs and now have reached the end of my very limited troubleshooting ability. Seems obvious to me that the squealing is a belt that is slipping, but I'm not sure if a belt could explain the other issues it's having. I'm thinking we are probably talking about multiple unrelated problems. The auto parts store found no error codes and the check engine light will flash on occasionally but then goes off again. Today when she drove it she was unable to get it to go over 30 mph. I'm really not prepared to spend thousands for a mechanic since this is a teenagers first car, and I'm using this whole situation as an excuse to educate myself more on vehicle repair. Any ideas of what else I can try?


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jul 15, 2017, 6:09 PM

Post #2 of 2 (2272 views)
Re: 2004 Sonata Squealing, rough idle, stalling Sign In

If the check engine light is coming on, it HAS to have codes stored unless either someone is erasing them or the computer itself is bad.

This may be beyond you ability and available equipment.



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