Hello everybody, just bought my first 2000 4 cylinder automatic Toyota Camry a month ago and really loving it. Yesterday I decided to change the oil. I used a 10w 40 and 10w 30 mix with a quart of oil stabilizer. Right after I changed the oil I was running when suddenly the car lost gear. Like if it went into neutral. I pulled over and turned the car off and on again and the car ran fine again. I was a little worried. I kept driving and then again it did it. Turned it off and back on again and drove fine again. The car ran perfectly fine before the oil change. No engine noises. The transmission worked perfectly fine, shifted fine no noises at all. Im not a mechanic but im pretty good with cars. I do all maintenance on my cars myself but this has really got me dumbfounded. There are no lights on the dash, no noises coming from anywhere, everything seems to be working perfectly fine. I would greatly appreciate if anybody has any suggestions on what maybe going on. Thanks in advanced.

 

Changing the engine oil should have nothing to so with the trans.

Have you checked the trans fluid level? On rare occasions the trans oil screen might plug up.

Typically when the trans goes into neutral its a trans internal problem. Next time this happens determine if the trans goes into reverse and try shifting to 1st gear.