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7 Series (E23, E32, E38, E65, E66) General discussion and technical help for all year 7 series cars.

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Old 01-09-2007, 06:52 PM   #1
QcMarque
 
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Name: QcMarque
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Location: Puyallup, WA
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Your Ride: 1994 740i
Tranny issues...

Well, more of an annoyance. When I step on the gas and the car downshifts, revving up to the 6k mark... shift up, down(trying to decide between previous or next gear)... kinda wavering. It only happens when I put the petal to the floor and hit the kick-down switch, causing the rpms to hit top-end before shifting. Any ideas on what may cause this, as well as a fix? When driving otherwise it shifts smooth, no jerking or slipping... I know on some cars the auto trannies are vacuum assisted for the shifting - is that true on Bimmers (btw: I've got an '86 E23 L7 - 260k+)?

Thanks everyone!
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Old 01-09-2007, 07:47 PM   #2
c1apton
 
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Location: Pompano Beach,Fl /Edina,Mn
Rate My Car: 134 / 340
Your Ride: 93 E34
When was last fluid & filter change?
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Old 01-09-2007, 08:28 PM   #3
QcMarque
 
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I'll hav to look at the records that came with the car... I know it was before I got it.
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Old 01-09-2007, 09:52 PM   #4
c1apton
 
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Name: c1apton
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Join Date: Oct 2005
Location: Pompano Beach,Fl /Edina,Mn
Rate My Car: 134 / 340
Your Ride: 93 E34
Start w/fresh fluid & filter (wipe out pan good and clean magnet) then go from there. Cold weather & major climate changes do strange things to fluids & metals. Fluids compress and act like low fluid probs.
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Old 01-09-2007, 11:43 PM   #5
QcMarque
 
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I'll start there on the 20th (between paychecks) - and just will cruise and not get on her until then.
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