2004 gxp misfires - Page 3 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Bonneville GXP/ Northstar Powered Cars Discuss your Bonneville GXP and/or any other Northstar powered Olds or Cadillac... Including the 3.5L Twin Cam V6 (Short Star ) 4.0L and 4.6L Northstar V8's. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-20-2011, 09:46 PM   #21
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Was it a black liquid? May have been gas soaked carbon from the misfire.

Could just leave the cover off. Holds heat in anyways.
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Old 07-20-2011, 09:55 PM   #22
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yeah I think it was pretty black, wiped old plug with a paper towel and it all turned black.....
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Old 07-20-2011, 10:18 PM   #23
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That sounds like gas soaked carbon and grime.
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Old 07-21-2011, 07:52 PM   #24
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does anyone know the part number for an individual coil pack and not the 4 pack assembly?

89056799 is not it as I found out when it arrived today
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Old 07-21-2011, 11:31 PM   #25
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Ya no PVC valve. We have had several of the individual coils go bad on these LD8'* and cause the symptoms noted.
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Old 07-21-2011, 11:45 PM   #26
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Not sure they can be bought by the piece, I'll check around
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Old 07-21-2011, 11:59 PM   #27
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89056799 is old coil that doesn't fit the LD8

89017778 is what you want. Rock Auto is having a closeout on them for $98. 4 pack..... welcome to modular parts scheme'ing. At $98, itz a bargain. It shows as D593A in their online catalog.
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Old 07-22-2011, 12:07 AM   #28
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vennom is that the delco version that rock is selling? I know about the 4 piece unit, I am hoping to find a single....
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Old 07-22-2011, 12:18 AM   #29
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ordered the last one rock had, that will give me 3 singles as spares.... since I'll take out the front four and put one of them in to the 6 spot.....
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Old 07-22-2011, 12:19 AM   #30
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YA, the Delco one. I say bargain because the off brand is over $200. I really doubt you will find a single coil. I have looked extensively for such an animal. No Luck. They are made/sold as a modular unit.
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