MarkFT wroteHow'd the rebuild itself go? Did it fix the problem?I was doing a bunch of other maintenance work at the same time, but I would estimate 5-ish hours, including the time required to rebuild the actuators (probably about an hour alone). The work wasn't too hard, and if I had to do it all over again I could probably do it in half the time.
The biggest slow downs were getting some of the connectors apart (some of the electrical connections and also the hose connected to the rear of the intake plenum).
I'd schedule half a day if you're mechanically inclined and want to take your time/be meticulous. I didn't break any connectors and everything went back together without any issues, so I was happy with the time it took.
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EJT86 wroteI didn't have any problems. Mine weren't on super tight.Any one else have trouble with the three actuator bolts? I got all the way up to that point last night but they're ridiculously tight. I might have partially stripped a bolt
W/// wroteLucky me thenI didn't have any problems. Mine weren't on super tight.
EJT86 wroteHey Erik, how did it go? Got her up and running again?W/// wroteLucky me thenI didn't have any problems. Mine weren't on super tight.
M3an V8 wroteUgh well of course things came up last weekend so I couldn't get to it until yesterday...spent the night taking everything apart only to find the bolts are super tight getting the actuator off...I used a T25 bit but I'm going to buy a T30 and try it because I think it was starting to stripHey Erik, how did it go? Got her up and running again?
Yeah the bolts are a bit snug, i sprayed a little bit of PB blaster and they came out a lot easier.
Damn this is frustrating. Codes prior to replacement of bank 2 were.
Engine / Motor
Fault: Throttle valve actuator CAN message
Code: CDBF
Fault: check at lower top
Code: 2B57
Fault: CAN bus off throttle
Code: CD93
Fault: Control module self-test ROM
Code: 277B
Fault: Throttle valve actuator control monitor
Code: 2B16
Fault: Throttle Monitor Bank 2
Code: 2B26
Now periodically getting after multiple clears.
Fault: Throttle valve actuator CAN message
Code: CDBF
Fault: check at lower top
Code: 2B57
Fault: CAN bus off throttle
Code: CD93
Engine / Motor
Fault: Throttle valve actuator CAN message
Code: CDBF
Fault: check at lower top
Code: 2B57
Fault: CAN bus off throttle
Code: CD93
Fault: Control module self-test ROM
Code: 277B
Fault: Throttle valve actuator control monitor
Code: 2B16
Fault: Throttle Monitor Bank 2
Code: 2B26
Now periodically getting after multiple clears.
Fault: Throttle valve actuator CAN message
Code: CDBF
Fault: check at lower top
Code: 2B57
Fault: CAN bus off throttle
Code: CD93
M3an V8 wroteT27 is the size and I switched to the 3/8 drive got it done now once I figure out how to get the rod disconnected from the actuator ill be doneYeah the bolts are a bit snug, i sprayed a little bit of PB blaster and they came out a lot easier.
Never mind got it...getting the old one out is the biggest PITA but "new" one is in now reassembling
Make sure to double check your sensor connectors, had to take plenum off twice coz my coolant temp sensor wasn't plugged in all the way.
I got it all back together and took it for a test drive. Had the same "increased emissions" warning on startup test drive was regular. Checked to see if that nasty downshift rev noise was there and of course it was...downshift, rev match, harsh noise and straight to limp mode. I guess I'll scan it tomorrow and see what codes come up
Were the faults cleared prior to start up?
M3an V8 wroteI didn't check the codes prior. I had someone hit the throttle after it going into limp mode and saw one actuator wasn't working so figured it needs replacing anyway so may as well start thereWere the faults cleared prior to start up?
Took some screen shots of the fault codes I got after another limp mode episode. The drivers side actuator was replaced
EJT86 wrote#2 and #3 on the first screen shot, I got those when I replaced my actuators due to the connectors for the corresponding sensor not plugged in all the way.Took some screen shots of the fault codes I got after another limp mode episode. The drivers side actuator was replaced
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zps6iftn3pf.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpsrtbcdj53.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpspppudt3q.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpsq3pg1ovc.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpsgz8k84su.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpsyuvhpihz.jpg
http://i1275.photobucket.com/albums/y451/EJT612/Mobile%20Uploads/image_zpsyfiogh0y.jpg
M3an V8 wroteDo you think I should bother? It's still having the same problems. Maybe avoid opening it all up again to tighten connections only to find out something else needs replacing#2 and #3 on the first screen shot, I got those when I replaced my actuators due to the connectors for the corresponding sensor not plugged in all the way.
EJT86 wroteTotally up to you. The thermostat sensor (#16 first pic) right below the "V8" of the plenum, on the thermostat housing, you might be able to see it if its pushed in all the way. I believe the throttle sensors are at the end of each throttle body bank (#5 second pic).M3an V8 wroteDo you think I should bother? It's still having the same problems. Maybe avoid opening it all up again to tighten connections only to find out something else needs replacing#2 and #3 on the first screen shot, I got those when I replaced my actuators due to the connectors for the corresponding sensor not plugged in all the way.
Sorry can't comment on your "torque" fault codes.
M3an V8 wroteThat's alright. Ugh I might have to bite the expensive bulletTotally up to you. The thermostat sensor (#16 first pic) right below the "V8" of the plenum, on the thermostat housing, you might be able to see it if its pushed in all the way. I believe the throttle sensors are at the end of each throttle body bank (#5 second pic).
Sorry can't comment on your "torque" fault codes.
I guess replacement gears are now available.
http://m.odometergears.com/mobile/products/BMW/3+Series+E90+07-11/159
http://m.odometergears.com/mobile/products/BMW/3+Series+E90+07-11/159
M3an V8 wroteThat's been up for a while. I emailed a week ago to make sure and was told they weren't yet availableI guess replacement gears are now available.
http://m.odometergears.com/mobile/products/BMW/3+Series+E90+07-11/159
W///, thanks again, just swapped bank 2 in 2.5 hours, start to finish. Never done any work under the hood of this car except oil changes. Would not have tackled replacement without this DIY. Like others have said, my knuckles and back hurt, but my wallet is happy! Now to start a bet around the shop when bank 1 takes a dive...
So, is the consensus replacing the gears in the throttle actuators actually solves the problem of 'limp mode'? It's the gears and not the electronics? Does anyone have any experience yet with the rebuild of the actuators? Our M3 is starting to show signs of this problem and $800 just for parts is a little hard to take. Any and all comments welcomed.
