What could be causing my backfiring?

1997 EAGLE TALON
118,000 MILES
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CSTAFF25
  • MEMBER
  • 46 POSTS
It is the turbo version of the car.
It only backfires at full throttle around 4000 rpm.
I know I have a bad oxygen sensor on the manifold.
I have heard I should check spark plugs and boost leak and timing. I was just wondering if this info is enough to narrow down cause.
Jul 10, 2012 at 1:15 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
backfiring can be caused by a bunch of things. scan for codes first and check fuel pressure. then if these are original spark plugs replace those and check plug wires for resistance.
Jul 10, 2012 at 1:47 PM
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