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1991 Pontiac Bonneville Rough Running

Tiny
SBAKER32
  • MEMBER
  • 1991 PONTIAC BONNEVILLE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 308,100 MILES
Is there anything else that you can check if I'm not getting spark from 3 and 6 of the coil pack? How can you tell for sure that the coil pack is bad?
Thursday, February 25th, 2010 AT 6:13 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Swap the good ones to the bad ones and see what happens, also test the crankshaft position sensor-
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Thursday, February 25th, 2010 AT 6:17 PM
Tiny
SBAKER32
  • MEMBER
  • 2 POSTS
How can you switch it if its one complete rectangle with all six posts on it? Would the crankshaft postion sensor stop just 3 and 6 from sparking? The car is running but has no power.


https://www.2carpros.com/forum/automotive_pictures/489974_5240344_bwd_e45z_pri_thmb_1.jpg

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Friday, February 26th, 2010 AT 3:30 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Inspect and test the CPS if okay -back to the coil pack-it has no power bcuz your running on 4 cylinders instead of 6 cyl.
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Friday, February 26th, 2010 AT 4:34 PM

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