code 43.
#3
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yes i would say electronic spark control. its trippin hard while on heavy accelaration.like missin u know. i remember my 79 silverado did this when it wanted new plugs. the plugs on the bonnie look fine.barley 2000 miles on them.what steps do u suggest i take to fix this immediately? my trip into the colorado mountains (vail) to shotcrete a pool was really annoying with it stuttering up mountain passes.please tell me what to do to make it better.thanks.
#4
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Sputtering under load kind of leads me to think weak coils. Checking plugs first is a good idea, a new set is cheap. If the plug wires are old, then I say replace them as well.