Last week went to start my car and it would turn over but would not start. Towed to mechanic, he said it started when it was brought to the shop. Took it for a ride and it stalled while driving @ 50 mph and then would not start again. He thought it was a corroded wire on the alarm system. Once he bypassed it, the car started and ran fine. On the way home with the car it did the same exact thing, quitting while foot is on the excelerator and won't start back up. Any suggestions.

Only thing added to car was remote car starter (installed by professional) over two years ago. Never had problems with it.

Any suggestions.