[davejanand]

My 94 LaSabre will not always turn over. Cranks, but do not always get. A spark (I used a spark plug tester) Sometimes will die while driving but will start up and then run rough, with the service engine soon light.
One mechanic thinks it's the distributer, another said I don't have distributer, and it's the coils, a neighbor thinks it's the brain that connects to the ignition. Please help! Too many cooks in the kitchen! Thank you.

[Stratmando]

Did the mechanic check for and find any codes?

[TxGreaseMonkey]

Your LaSabre doesn't have a distributor. I would plug your existing coils into a new Ignition Control Module (ICM). They are problematic components and I recommend replacing them every 120,000 miles or 10 years, whichever comes first. You should easily be able to do it yourself. This will likely solve the problem.