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Forum Locked’94 540 Auto Trans Problem
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Joined: 27-February-2006
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Points: 1 		Direct Link To This Post Topic: ’94 540 Auto Trans Problem
    Posted: 27-February-2006 at 00:33

Hi all,

 

I have a 1994 540 Auto that splaying up. Basically the car drives and changes through the gears fine but the trans cuts the engine out at idle. Been told it might be a solenoid problem.

 

Any ideas?
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Andrew Rolland View Drop Down
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Joined: 19-August-2004
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Points: 6579 		Direct Link To This Post Posted: 27-February-2006 at 02:38

Welcome to the forum.

Number one, if it has a transmission dipstick check the fluid level.  Top up as required.

How exactly do you think that the transmission cuts the engine at idle?

Are you coasting to a stop on the brakes and the engine then cuts out like it would in a manual if you didn't dip the clutch?

If the above is the case, it could be a downshift problem which yes could be due to a faulty solenoid valve or anyone of the other million components in the gearbox.  The solenoids are controlled electronically so there could be a fault with anyone of the sensors in the gearbox or if the E34 have wheel sensors (like the E39) it could be one of them at fault. 

It could just also be in dire need of a service. If your transmission has not been serviced in 12 years the fluid will have deteriorated and most probably the fluid filter will be partially blocked. 

The best thing to do is to take it to an Automatic Transmission Specialist, they will be able to diagnose the fault if there is one and also get the autobox serviced while you are there. 

HTH

Andrew
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chazzer View Drop Down
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Joined: 25-April-2005
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Points: 383 		Direct Link To This Post Posted: 27-February-2006 at 04:28
Originally posted by Andrew Rolland Andrew Rolland wrote:

It could just also be in dire need of a service. If your transmission has not been serviced in 12 years the fluid will have deteriorated and most probably the fluid filter will be partially blocked. 

Welcome  as andrew said get it to an auto tranny specialist a service will do it wonders... you wont believe its the same transmission ..... mine was playing up/ lumpy changes/ noisey when cold but a service cleared it up 

hope this helps

chaz

Current : 1995 BMW E34 540I Auto 98K Fully Loaded, Leather, Sat Nav & Dvd. Previous: 1991 BMW E34 520I Manual(non-vanos) 185K with full leather. 1990 BMW E34 525I Auto 113k in sterling silver
& 1993 BMW E34 520I SE in dimond black
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