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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E30 (1982 - 1993)

E30 (1982 - 1993)
God's Chariot. The E30 was produced primarily from 1982 through 1991. The cabriolet was the one exception which was produced through 1993.

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  #1  
Old 12-07-2013, 05:15 PM
`66 coronet `66 coronet is offline
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Location: united kingdom
 
Join Date: Dec 2013
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Mein Auto: bmw `88 320i convertable
Unhappy auto gearbox problem

hi, I have a 320i convertible with an auto gearbox the problem I`m having is when cold it holds onto 1st gear either until warmed up a bit or high revs, once it has changed gear it works fine. I have changed the fluid and the strainer,it is a little better than it was but still the problem remains I have read a thread on here were some people say it is the catalytic convertor, the only prob there is my car dosent have one! I would appreciate any help as I am going mad with this,it is either pressure related or temperature
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  #2  
Old 12-07-2013, 10:45 PM
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downhiller downhiller is offline
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Location: des moines
 
Join Date: Oct 2007
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Mein Auto: 2012 hypermotard 796
all my autos did that, even my 04 silverado does that. i think thats more ecu flash oriented versus problem. there could be something else goin on, but if it shifts fine after it warms up and the fluid level is fine, then i wouldnt worry too much about it
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Old 12-08-2013, 01:33 AM
`66 coronet `66 coronet is offline
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Mein Auto: bmw `88 320i convertable
the only trouble there is my gearbox is non switchable so I don`t think there is an ecu attatched to the gearbox?
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  #4  
Old 12-08-2013, 01:36 AM
`66 coronet `66 coronet is offline
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Mein Auto: bmw `88 320i convertable
I think you are right though, I might be worrying about something I can`t fix,but it`s not so bad!!
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  #5  
Old 12-08-2013, 05:22 AM
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BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
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Mein Auto: E23;E30;E38;E32;E34 +
My E23 has the same problem. My trans wizard tells me a likely cause is a worn (then twisted) 'o' ring in the valve body - it jamms the shift control piston.
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E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #6  
Old 12-09-2013, 06:48 AM
`66 coronet `66 coronet is offline
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Location: united kingdom
 
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Mein Auto: bmw `88 320i convertable
thanks for that.I`ll just live with it then I don`t fancy my chances of getting hold of or being able to identify that then. Ive changed a valve body on my `66 dodge coronet for a full manual body but I would`nt like to fiddle with the seperate valving etc!!
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  #7  
Old 12-09-2013, 04:39 PM
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downhiller downhiller is offline
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Location: des moines
 
Join Date: Oct 2007
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Mein Auto: 2012 hypermotard 796
most autos have some sort of ecu control. the rest are pressure related with help from the throttle position/passing gear. so in essence, if its cold, the fluid is thicker causing higher pressures which holds gear longer. on newer cars, the ecu/tcu(?) when the engine is cold will run the rpms higher, warming the engine faster which warms the tranny faster too, or at least from what ive heard/read
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