Wobbly speedo up to about 40mph

Rust problems and repairs, leaky sunroof... Battery, starter, lights, fuses, airco, heating unit, stereo... | Tuning: custom spoilers & bodykits, fiberglass parts...
NO parts requests here, please use our V3M BUY & SELL corner
Post Reply
User avatar
Benfraser
Posts: 230
Joined: 01 Feb 2012 06:57 pm
Location: Dartford

Wobbly speedo up to about 40mph

Post by Benfraser » 29 May 2012 10:47 pm

Recently bought a volvo 340 and its mint. Only thing is the speedo goes crazy at low speeds, as soon as you get above 40mph it sorts its self out. Any ideas?

Ride_on
Posts: 2262
Joined: 26 May 2009 05:34 pm
Location: Belfast, N. Ireland

Re: Wobbly speedo up to about 40mph

Post by Ride_on » 30 May 2012 12:09 am

Speedo cable frayed or the little piece that drives it in the front left hand bearing cover. I had one that had worn a nearly circular hole in the cup, I think caused by the lack of the circlip which seems unimportant as it works without it. Or a broken speedo, dashes seem fairly numerous or you could borrow one.
1980 345 DL_______1987 360 GLE (project car restored to GLT spec and B230FT'd)
1984 360 GLT______1987 360 GLT
1983 360 GLS______1989 360 GLE
1985 340 GL_______1986 340 1.4
1985 360 GLS______1995 940 SE 2.3 Turbo Estate (daily)
1987 340 GL 1.7

User avatar
Speedy88
Posts: 4057
Joined: 04 May 2009 11:52 pm
Location: Bristol

Re: Wobbly speedo up to about 40mph

Post by Speedy88 » 30 May 2012 01:19 am

Get the cable out and lube it up with GT85 (this stuff is ideal and has properties that will last longer than WD40 in this application). Should be a bit better for a while.
'88 340 Williams (Sold)
'85 360 GLS - Drift project (Sold)
'77 Colt Sigma
'96 940 Drift project

User avatar
Chris_C
*** V3M DONOR ***
Posts: 9600
Joined: 18 Jun 2004 11:53 pm
Location: South Coast, UK

Re: Wobbly speedo up to about 40mph

Post by Chris_C » 30 May 2012 07:59 am

Speedy88 wrote:(this stuff is ideal and has properties that will last longer than WD40 in this application).
Whilst it might be better than WD40, isn't graphite powder the correct lubricant in this application? Maplins used to sell it, about 3 quid
'89(G) 340 GLE B172k
'03 S60 D5 SE, '91 (J) MX5, 1954 Cyclemaster
Ex:
'89(F) 340 GL F7R (ex B172k) - Fake -> SBKV 300 Runner Up 08, 12; '91(H) 340 GL B14.4E - Kar; '88(F) 360 GLT B200E - Jet -> BKV 300 Runner Up 09; '89(G) 360 GLT B200E - Beast

User avatar
Benfraser
Posts: 230
Joined: 01 Feb 2012 06:57 pm
Location: Dartford

Re: Wobbly speedo up to about 40mph

Post by Benfraser » 30 May 2012 10:38 am

Thanks I think i'll try to get the cable out and have a look at it to see if is frayed or anything. If not i will gt85 it and see if it helps
Thanks

macplaxton
Posts: 3283
Joined: 09 Feb 2008 02:29 am

Re: Wobbly speedo up to about 40mph

Post by macplaxton » 30 May 2012 04:33 pm

Chris_C wrote:
Speedy88 wrote:(this stuff is ideal and has properties that will last longer than WD40 in this application).
Whilst it might be better than WD40, isn't graphite powder the correct lubricant in this application? Maplins used to sell it, about 3 quid
I thought greasing a speedo cable sparingly and wiping the last 6" off the speedo-head end of the cable was the format, so it would wind its way into the speedo head and kill it.

Something with PTFE in it, as another idea. Can't remember if GT85 does. Smells nice though.
72 DAF 44 Estate 78 Volvo 343DL Black BeautyImageImage
82 Volvo 343DL CVTImageImage 88 Volvo 340DL Diesel

Post Reply