Power Surges, Clutch Slippage? - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

 
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#1 (permalink) Old 07-25-2005, 07:21 PM
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OK I have been having RPM dippage for awhile now, but now Im starting to notice these power surges that have been happening, It seems to be more prominant now, my check engine light works but isnt on, so i dont know if that means anything, it's just ill be driving, then Ill feel a force pulling back, then as if to make up itself it lunges forward

BTW this is a 325is 1993 Automatic

I was wondering could this be the clutch slipping, Im not sure what that does, but what are the symptoms?

Im thinking perhaps MAS(mass airflow sensor) or 02 sensor, since it does have 106k miles on it

thx
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#2 (permalink) Old 07-26-2005, 09:46 AM
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anyone help me plz?
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#3 (permalink) Old 07-26-2005, 01:12 PM
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Read the article linked below. Check your transmission oil level, the article below tells you how.

http://www.pelicanparts.com/BMW/techarticl..._Fluid_Auto.htm

AND you need to be a little more specific with your description of the problem. Do your RPMs dip under load? LOAD = Your foot pressing on the gas pedal.... or under idle...? Have you checked to see if your throttle cable is loose? Start with the tranny oil and see what happens.

Let us know the outcome. I have an automatic, my RPMs were dipping too... turned out I had a litre of oil missing.

Good Luck
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#4 (permalink) Old 07-26-2005, 03:31 PM
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I had something similar happen in a marine application and it turned out that my transmission was dumping its fluid out the main seal in the back. If the transmission is low on fluid then it won't have as much fluid to use to build up the hydralic pressure against the equivalent of the clutch. Just what I learned. Oddly enough I still had reverse? Go figure

After I rebuilt the transmission and replaced all the seals and gaskets, new fluid and the damn thing runs like a champ!

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#5 (permalink) Old 07-26-2005, 10:39 PM
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anyone else got any ideas,
thx for those btw
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#6 (permalink) Old 07-26-2005, 10:42 PM
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oh btw it's under load,
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#7 (permalink) Old 07-27-2005, 07:54 AM
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Yall sure it couldnt be the o2 sensor?

and how much you think they would charge for like to refill my transmission fluid?
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#8 (permalink) Old 07-27-2005, 12:30 PM
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Uh.... I haven't checked the transmission fluid in my ride yet, but there is usually a dipstick somewhere than you can pull and check your level. If not it is just like changing your oil only easier because I don't think there is a filter... It might be in the FAQ section I don't know. How mechanically inclined are you?

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#9 (permalink) Old 07-27-2005, 01:15 PM
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Yeah I was going to say, all this "transmission fluid thing" has gotten me thinking, my car has been in 2 wrecks so maybe some got out but they fixed it


AND listen to this, Every single time I got up this steep hill on my rode it like goes up the hill fine, but once im at the top the RPMS's pull back, or like dip as u would say, So maybe the little bit of fluid is going to the front of the car or something and maybe thats why it does that?
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#10 (permalink) Old 07-27-2005, 01:15 PM
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Also just think when i take off, the fluids going to go to the back of the car (or whatever it is)

anyone got a pic of where the dipstick would be on a 1993 325is? for tranny fluid, i looked but couldnt find it
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