P0435 P0440 Crankshaft And Camshaft Possition Sensors Options

[Simao33]

Hello, I own a 2004 Lancer SOHC 2.0 Liter.
The first time I had an issue the car was running and driving normal. All of a sudden the car died. Almost like it stalled out. Didnt want to start back up. Finally it started up and drove for a little and died again.
The car than drove and had no issues, eventually one morning it didnt want to start. After pulling it in checking for spark and fuel, replaced spark plugs, and IAC.
It was very unpredictable since once in a while it would start fine and act as if there was no issue.
I than got a hold of a friends scan tool and pulled a crankshaft possition sensor code. After clearing it and trying to run it, it than pulled both cam and crankshaft sensor codes.
I replaced the timing belt since I felt something was off either with the mechanical or electrical timing. I took the sensor out and cleaned it and added dialectric grease on the magnets of the crankshaft sensor. Also replaced both alternator and a/c(powersteering) belts and the waterpump. The car ran great for about a week. Now both codes are back.
Im now going to order a crankshaft sensor and install it. In the mean time I was currious to see if anyone else has had the same issue. On other forums mechanics thought it would be more so the crankshaft sensor, any input would be greatly appreciated.

Thank you