I know you have a code 43, and I had that once on my 89 (many yrs. ago) and I ficed everything it suggested and it did not do shit. I finally was advised to changed the modulator in the distributor and see what happens...so I did and it made everything better, the sputtering, the stalling, the intermittent cut outs. If the modulator goes bad these things can happen as well. For me this was the problem.