Car was recently intermittently losing power down to a crawl and one-time stalled at light. Dealership changed crankshaft position sensor. Next car started occasionally hard shifting. Dealership said I needed a new transmission. Went to transmission specialist, he said it is an electrical problem. Has anyone else had this problem? Transmission fluid has not been changed in 5 years. Both shops advised not to change it right now because will cause worse problems.