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1999 Hyundai Sonata miss on take-off

Tiny
CSMITH2056
  • MEMBER
  • 1999 HYUNDAI SONATA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 104,000 MILES
When I accelerate from a stop, the car misses. It will do it when the car is stopped and in gear intermittently. When I turn on the a/c while stopped and holding the brake, it quickens the onset of the miss.
Saturday, July 18th, 2009 AT 3:29 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Engine misfiring can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Saturday, July 18th, 2009 AT 5:26 PM
Tiny
STEVEW84
  • MECHANIC
  • 673 POSTS
You most likley have a trouble code for what cylinder is misfiring. Find out what the code is.
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Saturday, July 18th, 2009 AT 7:11 PM

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