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E34 (1989 - 1995)

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  #1  
Old 01-25-2013, 04:42 PM
FiatAL FiatAL is offline
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Location: Utah
 
Join Date: Oct 2012
Posts: 4
Mein Auto: 1990 535i
535i electrical gremlins windows

My windows and sunroof dont work. I have read the posts about fusible links and fuses and checked them all. My power locks work which means there must be something else. The window motors work when I add 12 v directly to the motors. Also the wipers only work on high and wont park by themselves. I have been working on this off and on for 5 months now.

Even took her to the local BMW guru who charged me 100 bucks and told me they think it may be my ignition switch and wanted 300 to fix it. Not guaranteeing that is what is wrong.

Sort of reminds me of my Army days, engine wont start so start replacing stuff until it works. I dont have the same budget as the government does ,, wait the government doesnt have a budget. Anyway any thoughts out there?

Thanks in advance

1990 535i automatic

Last edited by FiatAL; 01-25-2013 at 04:43 PM.
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  #2  
Old 01-25-2013, 04:55 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
Welcome to the Fest. This is not my forte`, but for some reason this tends to make me think you have a problem with your general module. You might google it to see if that may be the cause.
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Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #3  
Old 01-25-2013, 05:00 PM
FiatAL FiatAL is offline
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Location: Utah
 
Join Date: Oct 2012
Posts: 4
Mein Auto: 1990 535i
Thanks Steve, I was sort of forced to be here hehe. My son bought this car thinking it would be a quick fix and then turn it over for a profit. After working on it FOR him I am actually liking this car. First BMW I have driven and I will say I love the way it handles. I want to keep it but man I am scratching my head on this one. I own Fiats and am familiar with electrical issues but this one has me stumped.

Appreciate your comment! For the modules, what are the chances I am taking by buying one from ebay? Should I go new? I buy a lot of used parts (Fiat stuff ha) so I am not excited about paying for new electrical stuff for BMW.

Thanks!
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  #4  
Old 01-25-2013, 05:22 PM
BMR_LVR's Avatar
BMR_LVR BMR_LVR is offline
Humble E34 lover
Location: Asheboro, NC
 
Join Date: Dec 2008
Posts: 5,264
Mein Auto: 1992 525i
If it were me, I would go to a pick and pull and get a used one. It is not a common fail item of I'm not mistaken.
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Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #5  
Old 01-25-2013, 08:27 PM
haolibird haolibird is online now
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Location: san diego
 
Join Date: Dec 2008
Posts: 487
Mein Auto: E39 540i, E39 M5, E34 535
Welcome!

Have you searched "Ignition Switch"?
On the E39, any number of crazy things can be caused by a faulty unit.
Mine was bad, and things that could not possibly be related were magically
working, after the replacement.

Anyway, great car!
Love the 535 model.
Gotta be one of the easiest cars to maintain there are.

Aloha!
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  #6  
Old 01-25-2013, 09:46 PM
_Ethrty-Andy_'s Avatar
_Ethrty-Andy_ _Ethrty-Andy_ is offline
E34 Converted E30 Fanatic
Location: Humble New Zealand
 
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Mein Auto: E34 Touring AC Schnitzer
yep, General module. best bet is to fix the one you have if funds allow, usually just a dry solder or something. otherwise junk yard or buy new from BMW
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E34 V12 Project Thread Here: http://www.bimmerfest.com/forums/sho...=502437&page=4
Last updated 2nd January 2014
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  #7  
Old 01-26-2013, 12:03 AM
BMWFatherFigure's Avatar
BMWFatherFigure BMWFatherFigure is offline
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Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,099
Mein Auto: E23;E30;E38;E32;E34 +
Clean ign switch contacts with contact cleaner, check, clean and tighten every earth point you can find and then look for the others, there are loads of them. Soulds a bit like dirty terminals and contacts to me. OK it might be the module but these other checks are free..
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Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #8  
Old 01-26-2013, 01:12 PM
_Ethrty-Andy_'s Avatar
_Ethrty-Andy_ _Ethrty-Andy_ is offline
E34 Converted E30 Fanatic
Location: Humble New Zealand
 
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Mein Auto: E34 Touring AC Schnitzer
Quote:
Originally Posted by BMWFatherFigure View Post
Clean ign switch contacts with contact cleaner, check, clean and tighten every earth point you can find and then look for the others, there are loads of them. Soulds a bit like dirty terminals and contacts to me. OK it might be the module but these other checks are free..
you could be correct, but there are two many related problems, and it cannot be the main GM ground because other equipment (i presume) still works like interior lights etc
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E34 V12 Project Thread Here: http://www.bimmerfest.com/forums/sho...=502437&page=4
Last updated 2nd January 2014
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  #9  
Old 01-26-2013, 05:18 PM
FiatAL FiatAL is offline
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Location: Utah
 
Join Date: Oct 2012
Posts: 4
Mein Auto: 1990 535i
yup the interior lights work. I picked up a used GM and it didnt make any difference. I was able to replace the worn out fan blower motor but very very little heat (another thread I am sure).

Havent checked into the ignition switch as it seems to be working well but I will try that one out too. I enjoy driving this car lotts of power and it is smooth. Also the PO had installed some boomer type stereo system in the car then ripped it all out before they sold it. So it could be any wiring issue behind the dash.

I have enjoyed learning about these cars though. Lots of reading on the internet!
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  #10  
Old 01-26-2013, 07:02 PM
MySatinDoll MySatinDoll is offline
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Location: Next door bring tools and beer.
 
Join Date: Jan 2011
Posts: 1,339
Mein Auto: 1995 e34 S52b32/5
I agree. DO like the Jets did. Get rid of the GM and Get another.

(Jets should have gotten rid of sanchez too)
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Every once in a while the Lion has to show the Jackals who he is...
- Christopher Walken "The Lion Speech"
95 e34 525 5 spd S52 Swap... The new Garden State Grocery Getter projekt.
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  #11  
Old 01-27-2013, 06:36 PM
BMWFatherFigure's Avatar
BMWFatherFigure BMWFatherFigure is offline
Old School
Location: Perth, Western Australia
 
Join Date: Aug 2012
Posts: 2,099
Mein Auto: E23;E30;E38;E32;E34 +
Audio wirling is a new nightmare. You will have to sort it from square one. Hope it didn't blow 2 GM's.
__________________
Good - Fast - Cheap: Pick any two.
Current:
E23 735i; E32 735iL (X 2 - 1 Alpine White and 1 Glacier Blue); E34 535i; E38 735iL; R50 Cooper; R55 Cooper Clubman.
Previous:
E21 318i; E30 318i; E32 735iL; E34 535i; E38 730iL; E53 4.4i
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  #12  
Old 01-29-2013, 10:53 PM
paperplane94 paperplane94 is offline
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Location: Los Angeles, CA
 
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Posts: 927
Mein Auto: 1989 525i M20B25
Power was probably stolen from the non-working components and used for the super cool sound system.

Can you read circuit diagrams? The wire colors are in German:
http://wedophones.com/BMWManualsLead.htm
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  #13  
Old 01-30-2013, 07:44 AM
FiatAL FiatAL is offline
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Location: Utah
 
Join Date: Oct 2012
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Mein Auto: 1990 535i
That is worth looking into. Thanks for the diagrams. I will give that a look!
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  #14  
Old 06-21-2013, 10:09 PM
krispy krispy is offline
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Location: Phoenix AZ
 
Join Date: May 2013
Posts: 1
Mein Auto: 1992 BMW 525i sedan
Just wondering if your problem ever got solved. because i am having the same problems i replaced the gm, the fusible link the only thing that ever got fixed was the window wipers would work properly and not only on high.
Also how would you check the ignition switch what do i need to check it also how much would it cost to get it checked at the dealer. Its driving me crazy that i cant roll down the window because i live in the desert.
I drive a 92 525i i love the car to death but fixing this thing is driving me crazy.
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