Have you measured the spacing between the Crankshaft sensor and a pulse tooth? It s/b 0.55 +/- 0.2 mm.
If the gap is too large, it may explain the symptom. Since you have replaced the flywheel, this could be the problem.
Tye key battery has nothing to do with starting the engine; it's just for remote entry.
Ed in San Jose '97 540i 6 speed aspensilber over aubergine leather. Build date 3/97. Golden Gate Chapter BMW CCA Nr 62319.
Last edited by edjack; 11-18-2012 at 06:05 PM.