speedo problem - BMW Forum - BimmerWerkz.com
3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

 
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#1 (permalink) Old 01-21-2010, 10:10 PM
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speedo problem

I have an 84 318i and when I bought the car the speedo workout fine, I changed the instrument cluster because the fuel gauge wasnt working, but the speedo still work. Then later in a trip the speedo stop working, and started to work again and now it doesnt do nothing. I have to instrument panels and both speedos doesnt work. I changed the sensor in the diff, I changed fuses, replace SI batteries because they were bad, changed the instrument panels, I soldered the back of the speedo and still nothing jejejeje, can somebody help me please, thank you.
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#2 (permalink) Old 01-22-2010, 12:02 AM
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Talking speedo not working

Hi kid_318i

I have a 320i e36 and had a similar prob, both my speedo and fuel gauge not working.
I ripped out the dash passenger seat and carpet it took me weeks to find the problem, it was so simple

the fuel pump and speed sensor in the diff have the same earth wire, I couldn't find were it was bad so cut it close to fire wall on left hand side of car and gave it a good know earth it now works fine.

hope this helps you out go bimmers

wayne
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#3 (permalink) Old 01-22-2010, 03:17 PM
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Hey thanks good observation, I'll check it out.
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