My I4 camry stop occasionally on motion or when engaged in reverse gear. It stops mostly at bumps but do stop when on lower speed too. Starts immediately I restart it .
The following has been done so far
1. Changed the plug wire and spark plug
2. Changed air filter and fuel filter.
3. Cleaned the throttle body.

I notice the rpm drops instead of rising when AC is switch on. The car still stop with or without the ac on but occurs mostly with d AC on.

Most recent work done on d car is the changing of the bad alternator and was replaced with on with a thinner belt. Could that be the cause?

Scan the car today and showed no error