After driving my car this evening, I had the satnav on while on a private road

and against my satnav vs speedo it is this:

40 on speedo is 35 on satnav
50 on speedo is 45 on satnav
60 on speedo is 55 on satnav
70 on speedo is 64/65 on satnav
80 on speedo is 72/73 on satnav
90 on speedo is 82 on satnav
100 on speedo is 92 on satnav
110 on speedo is 102 on satnav
120 on speedo is 112 on satnav

the 5mph difference seems alright to me, but im sure lower down used to be more accurate than that. although i do have some lookwood dials which could make it wrong if the dials are slightly moved the wrong way i guess.. or the needle accuracy as well

because..
below 45/50mph the speedo needle is on the piss, and you cant get a good reading at all

see video: (phone camera cant even keep up with how much it wobbles! trying to stick to 30mph it wobbles between 25 and 35!)


what are the causes of this? speedo cable? anything else?

thanks, paul.

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Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

i quite like the music, but cant offer any insight lol.

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majorly on the piss
mine wobbles abit but not nearly that much
as for the readings, its about accurate. when i got caught speeding i was doing 40mph and it said i was doing 36mph.
dont know why it wobbles though matey

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L333SYA - Ford Cougar 2.5 V6
RR - TBC

jesus they are shockingly shite clocks for being that inaccurate, 8mph out above 70!.. I gotta sit at just under 80 on the clocks for 70mph in real terms

_________________
Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

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Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

I've read somewhere if the needle wobbles it is either a speedo cable on its way out or something in the gearbox has started to go.

My old 1.1 did this when the gearbox started to make a wining noise when driving, however I sold it before I could find out what the problem was.....

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Tied

for example, big chunky compomotive wide rims, with wide tyres

might still change speedo cable as it didnt seem to do it before on these wheels lol

no idea if gearbox is alright to be fair lol

_________________
Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

_________________

Some people are like slinkies. Not really good for anything, but bring a smile to your face when pushed down the stairs!

From the moment I picked up your book until I laid it down, I was convulsed with laughter. Some day I intend reading it.

ah well.. i'll live with it

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Daily isn't so Special. And it makes me sad.
Need space and time and I'll crack on with Jams si!

Catch me on Facebook as I'm rarely on here.

The Compo's wont make that much difference, id swap your speedo cable, as Trissy said when its gets worn it causes the speedo to bounce!

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RIP Ben. Gone but not forgotten.

SportKA - I've driven one and its deffinately a Girls car

Ford Fair 2010 0-60 7.45 secs Trek 4100

Save the trees, wipe your arse with a Cosworth

ive had this issue aswell paul what i did was regrease the speedo cable the inner cable behind the speedometer just spray some wd40 on the inner cable them put some spray grease on it cured mine try it m8 miight save you some money