Anyone,
I am repairing my 1993 Buick Regal Custom, 3.8L. I left it running when I went into the store the other day, then when I drove it away it was running rough. A timing gun revealed that 2 pistons weren't firing.
The car uses a Distributorless Ignition System, and has 3 ignition coils to power the 6 cylinders (firing 2 at a time). My first thought was to try repalcing the cables running from the coil to the spark plugs. This did nothing. My second thought was to replace the one coil that wasn't firing. This did nothing, the new coil also didn't fire.
Next in the logical line is the Distributorless Ignition Module. Unfortunately this is a $80-$300 part, and I would like to be sure this will solve the problem before I run off an buy one. My questions are these:
- Should I be testing the crank position sensor, and is it possible that it could be damaged in such a way that it would somehow only trigger 2 of the coils?
- Could wiring be to blame?
- Could the computer be to blame?
The module would be easy to repalce (only a few bolts), but the cost leads me to ask these questions first. Any help would be greatly appreciated! Many thanks in advance.
Joe tfurrows -a-t g,mail