325i Rev counter and other things
Printed From: BMW Car Club Forum
Category: Cars & Registers
Forum Name: E30
Forum Description: Discussion forum for E30s
URL: https://www.bmwccgbforum.co.uk/forum_posts.asp?TID=15576
Printed Date: 27 Mar 2026 at 2:30am
Software Version: Web Wiz Forums 12.03 - http://www.webwizforums.com
Topic: 325i Rev counter and other things
Posted By: RTTBMW
Subject: 325i Rev counter and other things
Date Posted: 08 Jul 2019 at 5:40pm
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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 330d SE, X5 30d SE, X5 35d M Sport,520d SE, 40d X6, 520d M Sport Touring,2019 G05 X5 Tanzanite Blue II,2021 Black Sapphire G05, a 1991 E30 325iMT2, 2020 F90 M5.2023 G05 LCI 30d Black Sapphire. |
Replies:
Posted By: NickDE
Date Posted: 08 Jul 2019 at 10:05pm
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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, Tronic gone, Solo gone, DBA gone, go Darknes2, go Frozen, go Black Pearl, go Echo. RIP The Vibrator |
Posted By: RTTBMW
Date Posted: 09 Jul 2019 at 9:50am
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Thanks for that! Where are the rechargeable batteries kept? regards Richard ------------- Owned 330d SE, X5 30d SE, X5 35d M Sport,520d SE, 40d X6, 520d M Sport Touring,2019 G05 X5 Tanzanite Blue II,2021 Black Sapphire G05, a 1991 E30 325iMT2, 2020 F90 M5.2023 G05 LCI 30d Black Sapphire. |
Posted By: NickDE
Date Posted: 11 Jul 2019 at 10:02pm
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Their soldered onto the extra circuit board that has the Service Indicator display on it. ------------- Darkness gone, Tronic gone, Solo gone, DBA gone, go Darknes2, go Frozen, go Black Pearl, go Echo. RIP The Vibrator |
Posted By: RTTBMW
Date Posted: 18 Jul 2019 at 9:39am
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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 330d SE, X5 30d SE, X5 35d M Sport,520d SE, 40d X6, 520d M Sport Touring,2019 G05 X5 Tanzanite Blue II,2021 Black Sapphire G05, a 1991 E30 325iMT2, 2020 F90 M5.2023 G05 LCI 30d Black Sapphire. |
Posted By: RTTBMW
Date 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! ------------- Owned 330d SE, X5 30d SE, X5 35d M Sport,520d SE, 40d X6, 520d M Sport Touring,2019 G05 X5 Tanzanite Blue II,2021 Black Sapphire G05, a 1991 E30 325iMT2, 2020 F90 M5.2023 G05 LCI 30d Black Sapphire. |
Posted By: NickDE
Date Posted: 03 Sep 2019 at 9:25pm
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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, Tronic gone, Solo gone, DBA gone, go Darknes2, go Frozen, go Black Pearl, go Echo. RIP The Vibrator |