engine is running lean and makes rattle noise under acceleration

2000 HYUNDAI TIBURON
160,000 MILES
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B541
  • MEMBER
  • 1 POST
I have replaced 02,maf, crank,cam and throttle position sensors, plugs, wires and even tried premium fuel.
When driving as long as you don't accelerate past 1/4 throttle it doesn't rattle like the timing is off. The car has no power and i've even verified that there is adequate fuel pressure i'm just curious if the ecu could be the culprit or any other suggestions
May 17, 2012 at 2:18 AM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Could be detonating/pinging-Check and test the knock sensor and the EGR valve-Do you have a check engine light?
May 17, 2012 at 3:38 AM
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