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1998 Pontiac Transport coil pack

Tiny
JTABER
  • MEMBER
  • 1998 PONTIAC TRANSPORT
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 15,700 MILES
We have a problem with a coil pack, we have codes p0121 and p0304 pr p0340, we know that it is one of the three coil packs that need replacement how can we tell which one?
Saturday, June 20th, 2009 AT 6:55 AM

1 Reply

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
P0304 will be missfire on cylinder #4, follow the #4 plug wire to the coil pack, #4 coil is when looking from the front of the van, front right wire on the coil, and 1st plug on front of engine passenger side of the motor.
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Saturday, June 20th, 2009 AT 7:06 AM

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