Dead trip and odometer

Sep 25th, 2005, 00:05

'89 740 GLE estate - 347185m static :(

Apologies to those who have read this all before - but to me its an unwelcome first! :(

Both trip and odometer have stopped, speedo still works ok, thus sender ok.

Had the whole lot out today to look for obvious clues but found none.

Options appear to be 1) dismantle and look for mechanical failure (gears?) but it could be electronic (could it?), or 2) seek a replacement from a breakers.

For option 1 I would like more detail on how to dismantle the speedo unit preserving some chance of successfuly reassembly! Would also be nice to have cct diagram of the electronics and description of operation.

For option 2 I have read there are variants fitted to this year/model but read somewhere that 4 pins at the rear was unique enough to identify exact variant required.

Comments/answers from those who've been there done that would be much appreciated.

Alan.

Sep 25th, 2005, 12:40

The trip feeds the odometer so if one goes, the other one goes too. I would try some grease on the gears.

------------------------------
1995 Volvo 945 LPT Auto
1995 Volvo 850 GLT 2.5 Auto
1991 Volvo 945 GL Auto
1988 Volvo 745 GL

Peter Milnes · Sep 25th, 2005, 23:29

The usual problem is that a small plastic gear wheel splits and no longer transmits drive to the Odometer/Tripmeter. The so;ution is to locate the gear wheel and apply something like plastic cement or Loctite Superglue to make the wheel stick to the shaft and transmit drive once again. If you refer to the 700/900/90 FAQs (Brickboard) on this website you should find instructions on how to do this.

All the best, Peter.

Sep 25th, 2005, 00:05	#1
alanr Guest Location:	Dead trip and odometer '89 740 GLE estate - 347185m static :( Apologies to those who have read this all before - but to me its an unwelcome first! :( Both trip and odometer have stopped, speedo still works ok, thus sender ok. Had the whole lot out today to look for obvious clues but found none. Options appear to be 1) dismantle and look for mechanical failure (gears?) but it could be electronic (could it?), or 2) seek a replacement from a breakers. For option 1 I would like more detail on how to dismantle the speedo unit preserving some chance of successfuly reassembly! Would also be nice to have cct diagram of the electronics and description of operation. For option 2 I have read there are variants fitted to this year/model but read somewhere that 4 pins at the rear was unique enough to identify exact variant required. Comments/answers from those who've been there done that would be much appreciated. Alan.

Sep 25th, 2005, 12:40	#2
George Holmer Guest Location:	RE: Dead trip and odometer The trip feeds the odometer so if one goes, the other one goes too. I would try some grease on the gears. ------------------------------ 1995 Volvo 945 LPT Auto 1995 Volvo 850 GLT 2.5 Auto 1991 Volvo 945 GL Auto 1988 Volvo 745 GL

Sep 25th, 2005, 23:29	#3
Peter Milnes Premier Member Last Online: Apr 10th, 2014 00:01 Join Date: Feb 2002 Location: Tonyrefail	RE: Dead trip and odometer The usual problem is that a small plastic gear wheel splits and no longer transmits drive to the Odometer/Tripmeter. The so;ution is to locate the gear wheel and apply something like plastic cement or Loctite Superglue to make the wheel stick to the shaft and transmit drive once again. If you refer to the 700/900/90 FAQs (Brickboard) on this website you should find instructions on how to do this. All the best, Peter.

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