need help mechanic cant figure out been in the shop 4 days

1999 PONTIAC BONNEVILLE
103,000 MILES
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TRELLAC79
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99 pontiac bonneville keeps stalling replace ignation coil and modulator that over heated the coils still stalls what could it be
Oct 4, 2012 at 1:27 AM
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ASEMASTER6371
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start with fuel pressure check.

Roy
Oct 4, 2012 at 1:33 AM