Instrument repair?

deeman940 · Nov 13th, 2021, 21:44

can anyone recommend anyone to repair my intermittent speedo? seen some ads on ebay but seem rather expensive..
Damo

Laird Scooby · Nov 14th, 2021, 10:45

Quote:

Originally Posted by deeman940

can anyone recommend anyone to repair my intermittent speedo? seen some ads on ebay but seem rather expensive..
Damo

Does your ABS warning light come on when the sppedo dies?

deeman940 · Nov 16th, 2021, 00:31

Quote:

Originally Posted by Laird Scooby

Does your ABS warning light come on when the sppedo dies?

No, don't think so Dave....

Laird Scooby · Nov 16th, 2021, 10:42

Quote:

Originally Posted by deeman940

No, don't think so Dave....

Sounds more like the instrument then Damo or perhaps the connections on the back of the cluster. Worth checking and tightening those first before pulling the speedo apart.

siadow · Nov 16th, 2021, 18:38

Hi. I feel your pain. Search out my instrument cluster tales. Finally solved with expensive eBay purchase of replacement cluster. Took 6 months to sort.
Cheers
Siadow

StrongSpearWorks · Nov 19th, 2021, 17:31

I had this last year… getting the cluster out is an exercise is swearing to get the surround off, but once that’s off it’s fairly plain sailing.

Separate the clear plastic from the white part - carefully remove all the screws and gently pry them apart. If you meet resistance you’ve probably missed a screw. Extract the speedo and examine the solder joints. I didn’t have any blown capacitors but I did find a lot of verdigris on the copper parts. Get in there with plenty of contact cleaner and a toothbrush, toothpick (gently does it, slow and steady wins the race).

Put it back together again and hopefully it will all work again.

Ian21401 · Nov 20th, 2021, 18:25

When my speedo went intermittent I found that a couple of the capacitors were leaking so all five were replaced but that didn’t cure it. On the advice of my brother who had replaced the capacitors I obtained a fibre glass pencil to clean up the PCB. What finally cured it was individually removing the screws which screw into and through the PCB and cleaning the PCB beneath them with the fibre glass pencil. Much easier than cleaner and toothbrush etc.

martin calva · Dec 5th, 2021, 19:54

The speedo on my 940 diesel started misbehaving (or stopped altogether - it was years ago and I can't remember for sure).

At the suggestion of the local garage man who is a former Volvo area service manager, I checked the wiring at the rear of the back axle and found that it was falling to bits where it was joined to the connector of (I assume) the ABS/speed sensor.

I remade all the connections, soldering where necessary, and no trouble with the speedo since then.

Martin

deeman940 · Dec 10th, 2021, 02:52

Many thanks to all who replied....
So. The whole reason behind this post is that i bought a used st of clocks off ebay a year or two ago so that i had a replacement when i sent mine off....
i thought the new ones MAY cure my stalling problem but it didn't!!!
it does not appear to overrun like it used to sometimes but still stalls!!
At least i have a speedo that works correctly...ish....no night lights but hope to cure soon...

Rversteeg · Dec 10th, 2021, 12:19

Quote:

can anyone recommend anyone to repair my intermittent speedo?

No personal experience with these people, but they seem highly thought of here in the Netherlands: https://www.ets1.nl/English-customers/

Nov 13th, 2021, 21:44	#1
deeman940 Master Member Last Online: Apr 4th, 2024 17:58 Join Date: Oct 2015 Location: watford	Instrument repair? can anyone recommend anyone to repair my intermittent speedo? seen some ads on ebay but seem rather expensive.. Damo

Nov 16th, 2021, 18:38	#5
siadow Junior Member Last Online: Apr 17th, 2024 19:18 Join Date: Nov 2008 Location: caerphilly	Good luck! Hi. I feel your pain. Search out my instrument cluster tales. Finally solved with expensive eBay purchase of replacement cluster. Took 6 months to sort. Cheers Siadow

Nov 20th, 2021, 18:25	#7
Ian21401 Premier Member Last Online: Feb 11th, 2023 20:32 Join Date: May 2010 Location: Blyth, Northumberland	When my speedo went intermittent I found that a couple of the capacitors were leaking so all five were replaced but that didn’t cure it. On the advice of my brother who had replaced the capacitors I obtained a fibre glass pencil to clean up the PCB. What finally cured it was individually removing the screws which screw into and through the PCB and cleaning the PCB beneath them with the fibre glass pencil. Much easier than cleaner and toothbrush etc. __________________ Ian. Since 2005: 1992 Volvo 940 estate 2.0L. Manual. Daily driver and workhorse.

Nov 19th, 2021, 17:31	#6
StrongSpearWorks Member Last Online: Nov 26th, 2022 15:34 Join Date: Sep 2019 Location: BRISTOL	I had this last year… getting the cluster out is an exercise is swearing to get the surround off, but once that’s off it’s fairly plain sailing. Separate the clear plastic from the white part - carefully remove all the screws and gently pry them apart. If you meet resistance you’ve probably missed a screw. Extract the speedo and examine the solder joints. I didn’t have any blown capacitors but I did find a lot of verdigris on the copper parts. Get in there with plenty of contact cleaner and a toothbrush, toothpick (gently does it, slow and steady wins the race). Put it back together again and hopefully it will all work again.

Dec 5th, 2021, 19:54	#8
martin calva Senior Member Last Online: Feb 8th, 2024 21:33 Join Date: Apr 2015 Location: Falaise	The speedo on my 940 diesel started misbehaving (or stopped altogether - it was years ago and I can't remember for sure). At the suggestion of the local garage man who is a former Volvo area service manager, I checked the wiring at the rear of the back axle and found that it was falling to bits where it was joined to the connector of (I assume) the ABS/speed sensor. I remade all the connections, soldering where necessary, and no trouble with the speedo since then. Martin

Dec 10th, 2021, 02:52	#9
deeman940 Master Member Last Online: Apr 4th, 2024 17:58 Join Date: Oct 2015 Location: watford	Many thanks to all who replied.... So. The whole reason behind this post is that i bought a used st of clocks off ebay a year or two ago so that i had a replacement when i sent mine off.... i thought the new ones MAY cure my stalling problem but it didn't!!! it does not appear to overrun like it used to sometimes but still stalls!! At least i have a speedo that works correctly...ish....no night lights but hope to cure soon...

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