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 Post subject: Help, recurring problem
PostPosted: Tue Feb 04, 2020 2:05 am 
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Year and Trim: 2002 SLE
Hey all, I've searched the internet, but cant figure out how to fix this problem at all. So I'm turning to you all for some advice/guidance. 2002 Bonneville, keeps setting a P0336 code, crankshaft position sensor. It does this intermittently, and never when it's at my mechanics. I've replaced everything but the harmonic balancer, still does it. I'm totally lost here, can anyone give me a direction or idea where to go from here? Thanks in advance


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PostPosted: Tue Feb 04, 2020 11:22 am 
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
There are teeth on the back of the HB that the crank sensor reads. If there is damage there or its installed incorrectly you will have issues. You said you've replaced everything except the HB, so what have you all replaced? The CPS and....?

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PostPosted: Tue Feb 04, 2020 3:01 pm 
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Joined: Sun Jul 24, 2011 1:01 am
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Year and Trim: 2002 SLE
Crank position sensor, cam position sensor, plugs, wires, coils, icm.....


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PostPosted: Tue Feb 04, 2020 5:07 pm 
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Location: Browerville, MN
Year and Trim: 2004 GXP - plus a handful of other Bonnevilles
If it does it intermittently, its probably a wiring issue. I would check for damage to that small harness that controls the ignition (Crank sensor, cam sensor, ICM)

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2004 Bonneville GXP | White Gold Tricoat | custom built supercharged 3800 hot rod | garage queen
2005 Town & Country Limited | Butane Blue Metallic | 290k | Family Hauler
2002 Ram 1500 Quad Cab Sport | Black| 210k | Official Bonneville Hauler


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PostPosted: Wed Feb 05, 2020 12:22 am 
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Location: Central Illinois
Year and Trim: 1992 SSE
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If it's similar to an older 3800, the harness running down to the crank sensor is tucked into some nooks that tend to wear through the loom and insulation. Seen it a few times.

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