[sluggo]

For future searchers it might be good to add that the actual MAF sensor component is located inside the plastic body. I believe the external component is a thermocouple for reading incoming air temp.

[STR8-6IX]

Originally Posted by fishbowl88

Hey guys, thanks in advance for any insight provided.

I bought a 2008 328i AT RWD about two months ago from a dealer. It has 92k miles on it, no accidents, and Im the 3rd owner.

Ever since I purchased it, I always felt like the automatic trans was a bit jerky. It also seemed to slow the car down a bit on its own when it was in 1st, 2nd, or 3rd. It coasts just fine in 4th and above. After reading several forums, it seemed like a lot of people with this trans felt it was just a bit jerky too so it seemed pretty normal.

Today I was driving around town probably not going above 3rd, and things started feeling a bit weird, as if something was slowing the car down. Then it started lagging substantially when going between 2nd and 3rd. From a stop, Id get going, smooth from 1 to 2, but then from 2 to 3 the RMPs would kind of hold and then a few seconds later it would shift into 3.

This happened probably 10 more times until I got onto the highway and got up into higher gears. Since then, its gotten back to being pretty smooth, but Im still concerned.

Does anyone know what could be causing this? Or has anyone encountered this problem before? I have an appointment on Wednesday at the dealership. They say the diags are going to be 170, and go towards any repairs necessary. I also have a basic warrant through CARS Protection Plus that is still active and would cover the drivetrain if that were an issue.

And anything to look out for as far as getting screwed by the dealership?

Thanks!
Andrew


Edit: Added in that its Automatic and RWD.

this has been covered many times before. at your mileage, a full transmission FLUSH is long overdue. not a drain, which wont do anything but a FLUSH. 100% this will solve your problem.

[Snoball M3]

Have you updated the transmission software?

[tlow98]

Originally Posted by 6IX-F10-N52

this has been covered many times before. at your mileage, a full transmission FLUSH is long overdue. not a drain, which wont do anything but a FLUSH. 100% this will solve your problem.

I disagree. Flushes are never a great idea. I'm not even sure why they're available

[tdavis42]

Have you tried driving it with all nanny's off? These 328's are pretty conservative when it comes to keeping you on the road.

[STR8-6IX]

Originally Posted by tlow98

I disagree. Flushes are never a great idea. I'm not even sure why they're available

whats wrong with a full tranmission flush? I agree if you neglected to flush it in the past and have hit 150k miles, but if you flush the ZF fluid on time at 60k, a flush would make more sense then running new fluid through an old filter.

[seccsc]

Originally Posted by 6IX-F10-N52

whats wrong with a full tranmission flush? I agree if you neglected to flush it in the past and have hit 150k miles, but if you flush the ZF fluid on time at 60k, a flush would make more sense then running new fluid through an old filter.

If you have a ZF transmission, ZF doesn't recommend flushing. Here is the procedure for a mechatronic replacement from ZF which will tell you only drain and refill.
http://www.zftranspart.com/images/custom/mecha.pdf