Yesterday I noticed my steptronic was intermitently stuttering or hesitating when i gave it gas. It drives ok and no new lights have come on. Thought it might be heat related...Today from a cool start it did the same thing. I shifted into manual mode and tested with the asc on and off and no change. The weird thing is that i can't get it to hesitate in first or second gear... even with full throtle its just as smooth as can be until i shift to third+. I ended up just driving in 5th because it seems to be less noticable. The rpms jump/drop 200 or 300 on acceleration and deceleration. The only variable i can think of is that I filled up last with non ethanol gas. I thought it might be dirty fuel injectors or something related to gas flow/mixture, but I can only think it is something to do with the tranny since it doesnt happen in gear 1 or 2. Any suggestions would be greatly appreciated. Been searching all morning for an answer online... maybe a faulty transmission solenoid
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
Sounds transmission sensor related to me I would check fanatics out first and see what you dig up.
Coil boots? Had something similar happen with my e46 but mine was a standard transmission.
Yo Pete! Bring it over later and let's pull some codes!
So aparently swisses code reader is not for an OBD2 01 E46... autozones gave me a EVAP system leak, which i was previously aware of. I spent the night cleaning the shit out of the nastyness that was my oil and transmission pans in preperation of some new seals, fluid and probably a new soleniod valve...
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
My hesitation/stutter turned out to be O2 sensor, but I figured that out after it went into limp mode on the way home from OKC... any limp mode? Is it affecting your MPG's? That was another tell tail of mine...
No limp mode or transmision light at all, just loss of power/ hesitation a bit in the higher gears. Drove it like a granny yesterday on back roads to work and back with no problem.....
I spoke with Benzin and Rennsport about the issue and they both have reservations on whether or not I should even change the tranny fluid if it has never been, I am just going to order the parts and make it my bitch this weekend (Garage Tech Session Saturday!) Swiss will be helping and anyone else how would like to is very welcome!
Today I get 1 mile from the house and hear a whining noise, thats never good, I figure its my transmission. Stoped the car and see oil severely dripping from the pan! Guess i sprayed enough cleaner around the gasket that i made it leak!! SONOFABITCH! So now I get to add a oil pan gasket to the list of things to do this weekend and that requires jacking up the motor. If anyone has a creeper or a torque wrench, I would love to borrow them this weekend. thanks
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
Yeah i used like 5 cans cause it was sooo nasty. I have had a leak from the main seal since i bought it, never had the $ to fix since it was minor, Havent had it on jacks since this mornings incident, but i noticed oil coming out pretty good from the very back and botton of the pan! Rick @ Rennsport also said to make sure it was coming from there since it is a bitch to replace. He said check the near the right rear valve cover for leaks first and make sure its not leaking from somewhere else.
I ordered the parts for the transmission fluid/filter/seal and a oil pan gasket and filter... now to start the disassembly in my garage! FUNFUN
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
Ugh, I feel for you Pete, that sucks.
I have found the replacement for displacement.....
Parts are in today! Will be starting the teardown tonight!!!
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
Get er done, cookout is coming up.
its broke it'll never run right again,ill give you 1000 tomorrow...haha
Last edited by 1fastcosmo; 07-01-2010 at 01:05 AM.
ROFL
hey guys, i have my tranny dropped, doing a clutch job and ran into probs argh, lol, but finally getting there! hard to do between shifts at work. bought a rear main seal, but am kinda afraid to change it because I would have to take the flywheel out, and if it's anything like the pressure plate, it's going to be a bitch and a half, and i dont want to accidentally ruin it in the process. bmw flywheel is $970 and I just dont have that to throw down the drain. do you think i should just keep the $20 seal that i got and change it out if it really ever becomes a problem? after doing all this work, exhaust and tranny are going to be -a lot- easier to take off in the future. not as much cutting and prying with new nuts/bolts etc
It won't be any less difficult to change the seal later, especially considering you'll have to remove all the same stuff you already have.
Then again, I'm lazy, I avoid duplicate labor if at all possible.
Pete, good luck getting it fixed.
I have found the replacement for displacement.....
Looks like the culprit of the oil leak might have been the oil filter housing gasket... fingers crossed! Also found a coolant line that was about to go and a crack in a PS line, so i will be tearing into about every system there is this weekend! Might as well do it all at once!!
FYI: Just found it interesting that both the power steering and auto trans both have cooling elements that feed off the radiator... ZE GERMANS
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
I was really impressed when I replaced the slushbox in the 540. The cooler is in the lower front of the tranny and has coolant lines from the radiator instead of flowing ATF through the radiator. (Much less of a mess for the tear down.)
Has anyone ever owned an older than new bimmer that didn't have a PS leak somewhere?
Good luck with the repairs!
Its an acceptable drip. Old cars will never be new again, its easier and cheaper to lower your expectations...
Transmission fluid swapped as well as new gasket and filter (old one was sitting in the pan with its 2 screws) ... still making a whining noise and feels low on power almost as if it were a slipping clutch maybe torque converter? Now I must get a professional opinion FTL
BMW MOFO
WTB: KOSEI K1's 17x8.5 http://caffeineandgasolineu.ipage.com/index.html
That really sucks! Good luck with the repair.
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