I own a 2001 330xi Automatic with an AA stage 1. I keep having a problem when shifting at high rpms starting in 2nd gear. Around 6000 rpm if I try to shift the transmission will hold at that rpm for around 4 seconds and then shift. after shifting the transmission light will come on and the transmission will shift rough until I turn the car off.
So I used INPA and it gave me :
146 CAN Moment interface.
I have changed the transmission fluid and filter. I can't find anything on that code. Please help
I own a 2001 330xi Automatic with an AA stage 1. I keep having a problem when shifting at high rpms starting in 2nd gear. Around 6000 rpm if I try to shift the transmission will hold at that rpm for around 4 seconds and then shift. after shifting the transmission light will come on and the transmission will shift rough until I turn the car off.
So I used INPA and it gave me :
146 CAN Moment interface.
Every time that error shows up its at 6176 rpm. I have changed the transmission fluid and filter. I can't find anything on that code. Please help
Is the transmission related firmware/software up to date? Has it been modified in some way?
Has your car always exhibited these characteristics or is the problem new?
Have you posed this question to the AA guys? Could it be AA related?
Are we correct to presume that shifting occurs correctly at say 5k RPM or even 5.5K and that these problems occur specifically at 6k or 6.176k?
Are you somehow "controlling" the shifts by initially selecting D4 (or whatever it may be) then moving the leaver to D3 thereby "signalling" the shift to next ratio?
I'm not sure if the tranny software is up to date, but it has not been modified in any way.
The problem appeared about 4 months ago. I sent a message to AA about a month ago and have not gotten a message back.
There is no problem shifting below 6k rpm, but after that the problem occurs.
I can have the car in Drive or steptronic, but the outcome is the same.
Time to go to an automatic transmission specialist as I am about ready to ship mine to IPT - they have pickup and delivery service as well. Mine now slips in 2/3 and 3/4 shifts, just too much power for my ZF transmission.
I am letting IPT determine what needs to be fixed/upgraded as I don't want to try to fix it locally and it ends up being time/money wasted. We will know when it is back and installed.
I will be glad to update here. IPT has a contract with a trucking company so that all that is needed is for the transmission (completely drained, of course) to be mounted on a pallett and protected (covered up) and the trucking company will pick it up. Later the same trucking company will deliver it back.
IPT says it needs the whole works to hold up to the increased torque - torque converter, valve body and rebuild/upgrade transmission - mucho money. I should have it back by the end of next week.
On the weekend out-of-town trip got two transmission lights at different times so I stopped, turned it off, waited awhile and turned it back on to clear the light. Drives and shifts fine otherwise. Will get it back to BIP to see what the codes say.
The code says traction control/tire issue so BIP says the difference in tire diameter is suspect - 255/35-18 in front and 275/35-18 in the rear; the rears are about worn down so going to change out the rears to 265/35-18 in hopes that the computer will like it.
The Michelin Super Sport 265 rears are now on the car. So far, a few brief blasts down on ramps have not triggered the transmission light so I am still hopeful. Another update after a trip.
The shorter tires seem to help but does not eliminate the transmission light from coming on but now less than 50% of the occasions where it came on before. BIP says another tire closer to the 255/35/18 fronts appears to be the route to go or turn off the DSC button all the time. I will try the DSC button off route to see what happens.
Anybody else having this type of problem?
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