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  1. Engine bogs down at highway speeds (60-70 mph), run fine other wise.

    262ci Forum (4.3)
    2000 S-10 Zr2 4.3 V6. Engine bogs down at highway speeds (60-70 mph) usually when getting on the on ramp. Engine act like it goes into a safe mode, where there is no power (like misfire) then after a few seconds it corrected and then runs OK but at a higher RPM. Other than that truck runs fine...
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