I have a 1988 buick lesabre. It quits on me and won't restart periodically. It is spitting out code 043. I changed the electronic spark module but doing same thing. Any ideas before I start changing a bunch of electronic parts till I find the right one. It mostly happens after I stop the car. It won't restart.

If my memory serves me correctly, 43 is related to the crank sensor circuit?

I have a 1988 buick lesabre. It quits on me and won't restart periodically. It is spitting out code 043. I changed the electronic spark module but doing same thing. Any ideas before I start changing a bunch of electronic parts till I find the right one. It mostly happens after I stop the car. It won't restart.

Proper testing.
Check for lose of spark or fuel and injector pulse when it quits.
Post back findings
MT

If the camshaft sensor circuit is failing.. it more proubbly be the CRANKshaft sensor.. the crankshaft sensor makes the engine stop.. the camshaft sensor only controls spark advance.

Good luck