98 bonne idles fine, under load and at approx 20-25mph sputters, surges, chime goes off nearly stalls

Asked by Jul 02, 2018 at 04:47 PM about the 1998 Pontiac Bonneville

Question type: Maintenance & Repair

original prob was p0300, replaced 2 coils. (had only been running on 3 cyl)
After replacing coils initialy idled fine then died. Finally got it restarted, it revved
wildly start up chimes going off.. Seemed to have charging issue, swapped out
alt.. Idles fine Sputters under load (going up steep grade or accelerating past
20.  Now have p0135 code

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