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  1. 262ci Forum (4.3)
    Hello again want to make a thread kind of narrowed down some issues. 1990 GMC S15 4.3, I have replaced alot of stuff on this truck, fuel lines sensors, rebuilt tbi etc. Truck can run ok ish. So i unplug tan and black wire to shoot timing, do the timing truck is running decently with the wire...
  2. S10 / S15
    I have an 88 s15 with the 4.3 and was reading a code 43 which is knock sensor or electronic spark controller problem. Truck runs real sluggish and sometimes stalls occasionally. I tested for continuity on my knock sensor and had none so I replaced it, but I've also heard that I'm supposed to get...
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