2004 Hyundai Sonata car shakes and jumps

2004 HYUNDAI SONATA
84,000 MILES • 4 CYL • 2WD • AUTOMATIC
Avatar
SLAVICA
  • MEMBER
  • 3 POSTS
the other day my car didn't want to speed up when i stepped on the gas after slowing down, then a couple of minutes later once i slowed down again it started to shake. once i came to a complete stop it started jumping even my seat was moving. it also made a loud noise coming from the engine, it sounded like it was going to explode. does anyone know what this could be? i want to sell it but i need to know if it's something that could be worth fixing first
Mar 20, 2010 at 8:49 PM
Advertisement
Avatar
LEGITIMATE007
  • CERTIFIED EXPERT
  • 5,121 POSTS
sounds like the timing belt slipped a few teath, and may have caused some valve damage, will it start? and how does it sound while idling?
Mar 20, 2010 at 8:59 PM
Avatar
SLAVICA
  • MEMBER
  • 3 POSTS
[quote:5a655e1714="legitimate007"]sounds like the timing belt slipped a few teath, and may have caused some valve damage, will it start? and how does it sound while idling?[/quote:5a655e1714]

it starts but it sounds very loud, then once it warms up the sound quiets down, but once it reaches 2 rpm it sound really loud again, not below, not over only on 2rpm, i dont know if that means anything. i head the timing belt replaced a few weeks ago, and he said he also tightened another belt, forgot which one
Mar 24, 2010 at 12:57 PM
Advertisement
Avatar
LEGITIMATE007
  • CERTIFIED EXPERT
  • 5,121 POSTS
I still think it skipped a few teeth, and caused damage, either that or a push rod, lifter, or rocker arm. I would have a compression test done. that will narrow it down, check the coolant and transmission fluid. also check the oil and fill them all to specification
Mar 24, 2010 at 2:09 PM
Avatar
SLAVICA
  • MEMBER
  • 3 POSTS
yeah im gonna take it to a mechanic tomorrow thanks for the reply i've never heard of those things you mentioned, but now i'll know what to mention
Mar 25, 2010 at 8:34 PM
Avatar
LEGITIMATE007
  • CERTIFIED EXPERT
  • 5,121 POSTS
keep me posted
Mar 25, 2010 at 8:37 PM