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#1
02-28-2013, 05:08 PM
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misfire on cyl 3 and 6
i had a guy put my 2000 GP 3.8L on the scanner and it showed a miss in cyl 6 and 3 which share the same coil pack, so I replaced it but it didnt fix the issure, any other ideas?
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#3
02-28-2013, 05:59 PM
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Re: misfire on cyl 3 and 6
I would have swapped the coil with one of the others- to see if misfire follows the coil---
Anyway- try swapping wires, then if no help, then have ignition module tested at one of the local chain stores Autozone etc.
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Automotive A/C Engineer with: '99 IH 4700 Toy Hauler (2) '95 GEO Prizms both maroon '99 GMC Yukon '95 Chev 3500, 454 Dually Crew Cab- 145k miles- Wife's Camel trailer puller. '94 Astro- 370k miles '94 Firebird Formula- 5.7L 180k miles- gone- '92 Chevy Lumina Van 3.8L 264k '86 GMC S-15 - 2.8L 154k '87 Buick Park Ave . 187k '86 Buick Park Ave 3.8L 199k miles- gone '77 Chevy Vega- 2.5L 175k miles gone but not forgotten '68 Camaro 396 4 spd RS/SS -72k miles-
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#5
02-28-2013, 08:18 PM
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Re: misfire on cyl 3 and 6
It could be plugs, wires, or ICM......the 3 coils are attached to the ICM.....just use a spark tester to test the output of the 3/6 coil......if no spark and the 3/6 coil is new and ok, then it's the ICM.......
What condition are the wires? Are they original? Plugs ever replaced with A/C Delco's?
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