Hello, i have a 2003 Land Rover Discovery with 58k miles. I changed my transmission oil and filter couple days ago and started having problems.

When i come to a complete stop for about 10 seconds my vehicle shuts off on its own, but if i put my gear into N and wait for the red light to change vehicle doesn't turn off. Any one had similar problems. please anything helps. Also i was wondering my mechanic put a little more oil about 0.75 quart more than what he drained. Could that be caused by it? also noticed my vehicle changing gears a lot sooner than it did before the ATF change.

PS i did change the crank shaft position sensor last week, i bought an after market one from auto zone.

Anything helps, thank you!

 

With 58k on it and an oil change it shouldn't be happening. The aftermarket Crank Sensor, what brand was it?