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tbailey4
Joined: 03 Sep 2009 Posts: 2 Location: Livonia, Mi
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Posted: Thu Sep 03, 2009 8:50 pm Post subject: Engine fails to crank |
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I am working on a friends 89 535, automatic. It has failed to crank. I am not getting voltage to the solenoid. Starter fires if I hot wire voltage to the solenoid. I have no wiring diagrams but I assume the energizing line should pass through a neutral safety switch. My questions are, 1. Where is the neutral safety switch? 2. Are these cars equipped with a low voltage relay circuit that prevents the vehicle from starting when battery voltage is too low? After an hour of trouble shooting, I realized that the alternator is not charging the battery so battery voltage was down to 10.3volts. Any advice or wiring diagrams will be much appreciated. Thanks, Tim _________________ Two beemer motorcycles, no cars, YET!
1979 r65
1993 K1100 R/S |
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edjack
Joined: 04 Feb 2002 Posts: 3887 Location: San Jose, CA
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Posted: Fri Sep 04, 2009 7:56 am Post subject: |
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First, charge the battery.
Does the dashboard shift indicator agree with the shift lever position? If not, the trans switch is bad or misadjusted. It's concentric with the shift selector on the side of the trans.
If you think you may be wrenching on this car in future, get the Bentley's. Your friend can pay for it.
http://www.bentleypublishers.com/bmw/5-series/535i/1989-1993/BMW-5-Series-E34-1989-1995-Repair-Manual.html
BTW, the most common reason for no alt output is worn-out brushes, which are part of the regulator. _________________
Ed BMW CCA member since 1987 (Nr. 62319).
'97 540i 6 speed Aspensilber over Aubergine interior. |
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tbailey4
Joined: 03 Sep 2009 Posts: 2 Location: Livonia, Mi
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Posted: Fri Sep 04, 2009 8:51 am Post subject: |
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I will check the shift indicator, thanks. _________________ Two beemer motorcycles, no cars, YET!
1979 r65
1993 K1100 R/S |
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