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.
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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