2004 pontiac grand am se 3.4L v6

2004 PONTIAC GRAND AM
160,000 MILES • 6 CYL • FWD • AUTOMATIC
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BRANDYFLANERY
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  • 1 POST
misfire in cylinder 3
Apr 7, 2011 at 2:49 PM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
Look at plugs wires and coils first, then compression.
Apr 7, 2011 at 3:05 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
also check for vacuum leaks, fuel pressure low, dirty fuel filter. Your fuel pressure should be 52-59 psi
Apr 8, 2011 at 12:35 AM
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HANDYMAN
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  • 12 POSTS
Yeap! Sounds like it could be a broken wire or bad plugs, if it's bogging down and lack of power, good chance of bad wires or both. The back bank of wires are good for this, a lot of heat build up in this area along the fire wall. I had this on my 96 grand prix.(Bad wires) You might also check the fuel injector.
Apr 15, 2011 at 1:36 AM
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