Question on BMW 3-Series E36 O2_Sensor

hi, i have a bmw 316i 1996 MT model. my problem is when i run into around 10-30 kph, my rpm goes all the way down. i need to scramble going to neutral or else my engine will stall. it happens most of the time. Do you think it is the o2 sensor problem? or the fuel pump? thanks

__________________
This post was auto-generated based upon a question asked on our tech article page here:

[Nick at Pelican Parts]

- Nick

Sounds like you could have a problem with the idle motor or the air flow meter. I would Check with a factory scan tool and check for any codes.