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2000 Chevy Cavalier code P0301 being thrown

Tiny
MISTYE
  • MEMBER
  • 2000 CHEVROLET CAVALIER
Engine Performance problem
2000 Chevy Cavalier 4 cyl Automatic 130000 miles

we are getting a code p0301 (Cylinder #1 Misfire)
after we've replaced the plugs & wires. We've reset the check engine light to have it just come on again.
not sure what to try next.
any help would be great. Thanks
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Saturday, August 9th, 2008 AT 4:06 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the compression and injector for no.1

Misfires can be caused by worn or fouled spark plugs, a weak spark (weak coil, bad spark plug wire), loss of compression, vacuum leaks, anything that causes an unusually lean fuel mixture (lean misfire), an EGR valve that is stuck open, dirty fuel injectors, low fuel pressure, or even bad fuel.
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Saturday, August 9th, 2008 AT 4:26 PM
Tiny
MISTYE
  • MEMBER
  • 3 POSTS
Could it be the coil pack?
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Saturday, August 9th, 2008 AT 5:06 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Switch coil packs around and see what happens to the misfire at no.1
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Saturday, August 9th, 2008 AT 6:08 PM
Tiny
MISTYE
  • MEMBER
  • 3 POSTS
Fixed it. It was the coil.
Thanks for your advise
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Saturday, August 9th, 2008 AT 8:26 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You're very welcome sir and thanks for the donation its badly needed to keep us in operation to help people in need.
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Saturday, August 9th, 2008 AT 8:56 PM

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