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325i Rev counter and other things

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RTTBMW View Drop Down
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    Posted: 08 Jul 2019 at 5:40pm
Hi all,

Was wondering what is the causes of the rev counter not working on my E30 325i.  Also the mpg indicator is not moving either.  Speed indicator works!I have just purchased this over the weekend!


Foglamps are not working either or the coutesy lights in the roof.  What would be causing this to happen!

To pass MOT this week I have to replace all disc brakes and pads!

Richard


Owned 2001 330d SE, 2005 X5 30d SE, 2007 X5 35d M Sport,
2011 520d SE, 2013 40d X6, 2014 520d M Sport Touring
Now owner of G05 X5 Tanzanite Blue II and a 1991 E30 325i M Tech 2

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NickDE View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NickDE Quote  Post ReplyReply Direct Link To This Post Posted: 08 Jul 2019 at 10:05pm
The instrument clusters like to play games on E30s.
Could be a loose connection. A poor earth (often one of the nuts on the back is loose). A dry solder joint on the circuit board. The rechargeable batteries age and leak. General damage by previous owners.
Mine started working properly after six hours on the Autobahn had given the batteries a good charge. I also later pulled it out and had it rebuilt including new batteries.
Darkness gone, go Darknes2, go Frozen, go Tronic
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RTTBMW Quote  Post ReplyReply Direct Link To This Post Posted: 09 Jul 2019 at 9:50am
Thanks for that!  Where are the rechargeable batteries kept?

regards


Richard
Owned 2001 330d SE, 2005 X5 30d SE, 2007 X5 35d M Sport,
2011 520d SE, 2013 40d X6, 2014 520d M Sport Touring
Now owner of G05 X5 Tanzanite Blue II and a 1991 E30 325i M Tech 2

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NickDE View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NickDE Quote  Post ReplyReply Direct Link To This Post Posted: 11 Jul 2019 at 10:02pm
Their soldered onto the extra circuit board that has the Service Indicator display on it.
Darkness gone, go Darknes2, go Frozen, go Tronic
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RTTBMW View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RTTBMW Quote  Post ReplyReply Direct Link To This Post Posted: 18 Jul 2019 at 9:39am
Bought a old cluster that is working so I can fix my own one!  New batteries ordered! A winter project along with jacking points to be done!

Richard
Owned 2001 330d SE, 2005 X5 30d SE, 2007 X5 35d M Sport,
2011 520d SE, 2013 40d X6, 2014 520d M Sport Touring
Now owner of G05 X5 Tanzanite Blue II and a 1991 E30 325i M Tech 2

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RTTBMW View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RTTBMW Quote  Post ReplyReply Direct Link To This Post Posted: 01 Sep 2019 at 6:07pm
The fuse box contacts was cleaned and put in new fuses sorted the rev counter and mpg indicator!  Also I cleaned the foglight switch and they now work!





Edited by RTTBMW - 01 Sep 2019 at 6:10pm
Owned 2001 330d SE, 2005 X5 30d SE, 2007 X5 35d M Sport,
2011 520d SE, 2013 40d X6, 2014 520d M Sport Touring
Now owner of G05 X5 Tanzanite Blue II and a 1991 E30 325i M Tech 2

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NickDE View Drop Down
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North East Chairman

Joined: 14 Mar 2015
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Post Options Post Options   Thanks (0) Thanks(0)   Quote NickDE Quote  Post ReplyReply Direct Link To This Post Posted: 03 Sep 2019 at 9:25pm
Glad you got it fixed. E30's are like that - often very easy to fix once you find out what it is that's broken !
Darkness gone, go Darknes2, go Frozen, go Tronic
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