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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. 262ci Forum (4.3)
    1992 4.3, 4x4 Originally the car threw two codes 33 and 43, it would fire up and idle irregular before eventually stalling out. Got the Haynes out and I changed the MAP sensor and the ESC, for exactly 250 miles it ran like it was 1992! Just yesterday we had some snow so I used it and sure...
  3. 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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