1991 Pontiac Bonneville Rough Running

1991 PONTIAC BONNEVILLE
308,100 MILES • 6 CYL • 2WD • AUTOMATIC
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SBAKER32
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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?
Feb 25, 2010 at 6:13 PM
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RASMATAZ
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Swap the good ones to the bad ones and see what happens,also test the crankshaft position sensor-
Feb 25, 2010 at 6:17 PM
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SBAKER32
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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

Feb 26, 2010 at 3:30 PM
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RASMATAZ
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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.
Feb 26, 2010 at 4:34 PM