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Spark reference voltage
Hey guys, I have a concern about a new computer I just installed on this Bonneville. We had a code P0321 for spark reference on this thing. Diagnostic flow charts ask at one point while running whether the spark reference (B6 Lt Blu/Blk) voltage is about 2.5 v... Login to read more. 
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| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1994 Pontiac Bonneville SE 3.8L
| Engine | 3.8 L |
| Trans | 4-speed Automatic (Electronic) |
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