1998 Hyundai Tiburon Rich fuel mixture at begining of accel

1998 HYUNDAI TIBURON
149,000 MILES • 4 CYL • FWD • AUTOMATIC
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ROBLK
  • MEMBER
  • 1 POST
I have replaced upper O2 sensor, throttle position sensor, mass airflow sensor and fuel pressure regulator. I am still getting rich fuel mixture at beginning of accelaration. I have another check engine reading that indicates the mass airflow sensor but I just put a new one and it help[ed alot but still stumbling. Anyone have any ideas?
Mar 5, 2010 at 10:19 AM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Check the temp sensor. It tells the computer how rich to make the fuel mixture.
May 24, 2010 at 6:07 AM
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