How do you change an ignition coil on a 1994 Pontiac Bonneville?

Answer 1

Hi, mark here. just did one myself. On left side of engine you will find a bank of 3 coils that have spark plug wires on top of them. On each side you will find a screw that needs a 5mm socket to remove each coil. I found the 1st coil is probably bad on most 3.8 v6's that have a rough idle. For some reason this one goes out before the rest do. About 27.00 each to replace. Don't buy all three unless you just want to. buy one and try each one until you find bad coil. I did now car runs like a rocket again. Don't be afraid to buy used parts from salvage yard. It will help you out in a jam for a lot less money. Also you can try different things if no one can figure out whats wrong. Also autozone will do a free check on computer to try and tell you whats wrong with car. Hope this helps