Gas Guage Issue - 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 07-25-2011, 11:57 AM
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Gas Guage Issue

Hello all! New to posting and kinda new to BMWs, Ive had my 85 325e for almost 4 months now and after multiple times being on the jack stands its running fine except for my gas gauge. It always reads full, but as the ammount of gas goes down, the gauge does not. alltho the low gas light does come on when i have about half a gallon left. Do i need to just get a new gas gauge and everything that comes with it? Is there a way to fix it with out spending lots of money? thx.
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#2 (permalink) Old 07-25-2011, 06:17 PM
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check the fuse it might be blown
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#3 (permalink) Old 07-26-2011, 02:27 AM
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There are FOUR of the most common problems in " Fuel Gauge Gas ".

1. Defective Dash Voltage regulator (Voltage limiter) or gauge

2. Lost of a ground at the sending unit

3. Break in the wire going to the dash

4. On some Chryslers, the Bulkhead connector on the firewall or connector behind kick panel.

Less Common

1. Actual bad Sending Unit

2. Fuel Gauge defective

Tools needed for the basics:

Alligator Clip jumper (Make sure it works)
Test light probe
Radio Shack or equal Multi-meter

If removing the gauge cluster, you will need a socket set, a couple of #2 Phillips screw drives and a pair of needle nose.

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