Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > 700/900 Series General

Notices

700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

Fuel gauge erratic (common question I'm sure!)

Views : 14413

Replies : 24

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jul 11th, 2016, 23:53   #21
bgarston
Member
 

Last Online: Today 16:17
Join Date: Aug 2013
Location: Bristol
Default

Quote:
Originally Posted by James_N View Post
i can get to 250 but i think for safety sake when you dont have a fuel gauge, deffo go for 200. I remember when my fuel gauge wasnt working, The car started coughing badly and even cut out at one stage doing round a roundabout Managed to get it the 4 miles back home. God knows how

Every 200 miles! The fuel gauge on my '96 940 2.3LPT is also playing up so I fill up every 300 miles at the moment (.....and I do a lot of start/stop/30mph town driving). Anyway I have asked for price for a new sender unit at MRG recently and the part could not be found on the system! I am keeping the car, its the most reliable car I have ever owned and an getting all of it's little niggles finally sorted out. With this in mind does anyone know where I can get a new genuine Volvo sender unit please?

Thanks


Ben
__________________

1996 Volvo 940 CD 2.3 LPT (His) & 2003 Volvo V70 SE D5 (Hers....until it goes wrong!)
bgarston is offline   Reply With Quote
Old Jul 25th, 2016, 12:43   #22
deeman940
Master Member
 

Last Online: Oct 30th, 2023 02:51
Join Date: Oct 2015
Location: watford
Default

Quote:
Originally Posted by stephend View Post
I get something like that with my speedo. Once in a while it doesn't move off zero until I give the top of the dash a thump! Almost always when the weather's cold and damp. I don't know if the problem's electrical or mechanical.
LOL...I have the same problem! I gave up hitting the dash as I didn't want to damage it! it doesn't bother me most of the time but it would be handy to know the exact speed when going through cameras etc.
deeman940 is offline   Reply With Quote
Old Feb 25th, 2017, 22:59   #23
WUMPSTER
Member
 
WUMPSTER's Avatar
 

Last Online: Feb 17th, 2024 13:14
Join Date: Jun 2016
Location: NORTHWICH CHESHIRE
Default

http://www.autotronics.co.uk/service...EZAaAkUf8P8HAQ
WUMPSTER is offline   Reply With Quote
The Following User Says Thank You to WUMPSTER For This Useful Post:
Old Feb 26th, 2017, 10:55   #24
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 16:15
Join Date: May 2012
Location: Lakenheath
Default

It's almost certainly the gauge playing up, you need to work out if you have a Yazaki or VDO instrument set before even trying to obtain a second hand one.

Something you can try and will possibly help (it fixed several faults on my last 740) is removing the instruments, clean the copper tracks on the PCB where they enter the holes for the multiplugs (fine emery cloth is good but be gentle) and also clean the copper "fingers" on the multiplugs with the emery.

Then using something thin but strong enough, preferably non-metallic, get "behind" the copper "fingers" and bow them out a bit so they have more of a curve so they're more like they were when they left the factory. Over the years they get compressed by being in the holes/sockets in the back of the panel, any movement will cause strange things to happen on the connections.
You could also strip the instruments down and remove the fuel gauge and try the IPA (Iso-propyl alcohol) trick then blow dry with compressed air.

Take your pick on the IPA :

http://www.ebay.co.uk/sch/i.html?_fr...spray&_sacat=0

Also check the solder joints on the fuel gauge board, could be a dry joint there somewhere.
Alternatively i made one using an LM3914 and a 10 segment red/green LED bargraph display - worked well.



I did eventually change it back to a conventional set of instruments as the odometer had packed up as well and the mileage had been stuck at 182k for a few years!
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby is offline   Reply With Quote
Old Feb 26th, 2017, 11:44   #25
Prufrock
I've Been Banned
 

Last Online: Aug 10th, 2018 10:22
Join Date: Jan 2011
Location: The Lincolnshire Wolds & West Sussex Coast
Default

Driving for economy suits the 740 (B230) character well, I've achieved as much as the high 30s with my car - an auto.

Diesel (D24) economy not better; I've had one.

Jon.

N.B gauge an easy fix, the solution's already on the thread (and many before).
Prufrock is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 17:33.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.