1998 Pontiac Firebird Rough idle, lack of power

Tiny
CLAYTON NUNBERG
  • MEMBER
  • 1998 PONTIAC FIREBIRD
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 18,500 MILES
Car has new heads, plugs, wires, fuel injectors, and mechanics code reader says cylinder miss. Bad cat? Rough idle and lack of power, thanx.
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Tuesday, August 3rd, 2010 AT 11:35 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Could be the CAT if it has an excessive backpressure in the exhaust-also the idle air control valve, EGR valve, throttle position and manifold absolute pressure sensors. Also check fuel pressure
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Wednesday, August 4th, 2010 AT 1:07 AM

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